October 1 update. Our PDGM and ICD-10 tools now use the FY2027 code set: 190 codes added, 30 deleted, and no existing code changed clinical group.

See what changed

ICD-10 · PDGM grouping

S21 Open wound of thorax

All 288 codes in the S21 family, with the PDGM clinical group, comorbidity subgroup and primary-position rule CMS assigns, read from the CMS grouper crosswalk v07.2.26 and the CDC FY2027 code file.

ICD-10-CM FY2027 · CMS grouper v07.2.26

Codes in family

288

Can lead a claim

180

Cannot lead a claim

108

What CMS assigns to S21

180 of the 288 codes group to Wound; 108 are assigned no clinical group. None of the 288 is assigned a comorbidity subgroup. 180 of the 288 can lead a claim.

Every code in S21

Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.

CodeDescriptionPrimary positionClinical groupComorbidity subgroup
S21.0 Open wound of breast
S21.00 Unspecified open wound of breast
S21.001 Unspecified open wound of right breast
S21.001AUnspecified open wound of right breast, initial encounterCan lead a claimCNone
S21.001DUnspecified open wound of right breast, subsequent encounterCan lead a claimCNone
S21.001SUnspecified open wound of right breast, sequelaCan lead a claimCNone
S21.002 Unspecified open wound of left breast
S21.002AUnspecified open wound of left breast, initial encounterCan lead a claimCNone
S21.002DUnspecified open wound of left breast, subsequent encounterCan lead a claimCNone
S21.002SUnspecified open wound of left breast, sequelaCan lead a claimCNone
S21.009 Unspecified open wound of unspecified breast
S21.009AUnspecified open wound of unspecified breast, initial encounterCMS: Unspecified open wound of unspecified breast, init encntrCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.009DUnspecified open wound of unspecified breast, subsequent encounterCMS: Unspecified open wound of unspecified breast, subs encntrCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.009SUnspecified open wound of unspecified breast, sequelaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.01 Laceration without foreign body of breast
S21.011 Laceration without foreign body of right breast
S21.011ALaceration without foreign body of right breast, initial encounterCMS: Laceration without foreign body of right breast, init encntrCan lead a claimCNone
S21.011DLaceration without foreign body of right breast, subsequent encounterCMS: Laceration without foreign body of right breast, subs encntrCan lead a claimCNone
S21.011SLaceration without foreign body of right breast, sequelaCan lead a claimCNone
S21.012 Laceration without foreign body of left breast
S21.012ALaceration without foreign body of left breast, initial encounterCMS: Laceration without foreign body of left breast, init encntrCan lead a claimCNone
S21.012DLaceration without foreign body of left breast, subsequent encounterCMS: Laceration without foreign body of left breast, subs encntrCan lead a claimCNone
S21.012SLaceration without foreign body of left breast, sequelaCan lead a claimCNone
S21.019 Laceration without foreign body of unspecified breast
S21.019ALaceration without foreign body of unspecified breast, initial encounterCMS: Laceration without foreign body of unsp breast, init encntrCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.019DLaceration without foreign body of unspecified breast, subsequent encounterCMS: Laceration without foreign body of unsp breast, subs encntrCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.019SLaceration without foreign body of unspecified breast, sequelaCMS: Laceration without foreign body of unsp breast, sequelaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.02 Laceration with foreign body of breast
S21.021 Laceration with foreign body of right breast
S21.021ALaceration with foreign body of right breast, initial encounterCMS: Laceration with foreign body of right breast, init encntrCan lead a claimCNone
S21.021DLaceration with foreign body of right breast, subsequent encounterCMS: Laceration with foreign body of right breast, subs encntrCan lead a claimCNone
S21.021SLaceration with foreign body of right breast, sequelaCan lead a claimCNone
S21.022 Laceration with foreign body of left breast
S21.022ALaceration with foreign body of left breast, initial encounterCMS: Laceration with foreign body of left breast, init encntrCan lead a claimCNone
S21.022DLaceration with foreign body of left breast, subsequent encounterCMS: Laceration with foreign body of left breast, subs encntrCan lead a claimCNone
S21.022SLaceration with foreign body of left breast, sequelaCan lead a claimCNone
S21.029 Laceration with foreign body of unspecified breast
S21.029ALaceration with foreign body of unspecified breast, initial encounterCMS: Laceration with foreign body of unsp breast, init encntrCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.029DLaceration with foreign body of unspecified breast, subsequent encounterCMS: Laceration with foreign body of unsp breast, subs encntrCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.029SLaceration with foreign body of unspecified breast, sequelaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.03 Puncture wound without foreign body of breast
S21.031 Puncture wound without foreign body of right breast
S21.031APuncture wound without foreign body of right breast, initial encounterCMS: Puncture wound w/o foreign body of right breast, init encntrCan lead a claimCNone
S21.031DPuncture wound without foreign body of right breast, subsequent encounterCMS: Puncture wound w/o foreign body of right breast, subs encntrCan lead a claimCNone
S21.031SPuncture wound without foreign body of right breast, sequelaCan lead a claimCNone
S21.032 Puncture wound without foreign body of left breast
S21.032APuncture wound without foreign body of left breast, initial encounterCMS: Puncture wound w/o foreign body of left breast, init encntrCan lead a claimCNone
S21.032DPuncture wound without foreign body of left breast, subsequent encounterCMS: Puncture wound w/o foreign body of left breast, subs encntrCan lead a claimCNone
S21.032SPuncture wound without foreign body of left breast, sequelaCan lead a claimCNone
S21.039 Puncture wound without foreign body of unspecified breast
S21.039APuncture wound without foreign body of unspecified breast, initial encounterCMS: Puncture wound w/o foreign body of unsp breast, init encntrCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.039DPuncture wound without foreign body of unspecified breast, subsequent encounterCMS: Puncture wound w/o foreign body of unsp breast, subs encntrCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.039SPuncture wound without foreign body of unspecified breast, sequelaCMS: Puncture wound without foreign body of unsp breast, sequelaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.04 Puncture wound with foreign body of breast
S21.041 Puncture wound with foreign body of right breast
S21.041APuncture wound with foreign body of right breast, initial encounterCMS: Puncture wound w foreign body of right breast, init encntrCan lead a claimCNone
S21.041DPuncture wound with foreign body of right breast, subsequent encounterCMS: Puncture wound w foreign body of right breast, subs encntrCan lead a claimCNone
S21.041SPuncture wound with foreign body of right breast, sequelaCan lead a claimCNone
S21.042 Puncture wound with foreign body of left breast
S21.042APuncture wound with foreign body of left breast, initial encounterCMS: Puncture wound with foreign body of left breast, init encntrCan lead a claimCNone
S21.042DPuncture wound with foreign body of left breast, subsequent encounterCMS: Puncture wound with foreign body of left breast, subs encntrCan lead a claimCNone
S21.042SPuncture wound with foreign body of left breast, sequelaCan lead a claimCNone
S21.049 Puncture wound with foreign body of unspecified breast
S21.049APuncture wound with foreign body of unspecified breast, initial encounterCMS: Puncture wound with foreign body of unsp breast, init encntrCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.049DPuncture wound with foreign body of unspecified breast, subsequent encounterCMS: Puncture wound with foreign body of unsp breast, subs encntrCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.049SPuncture wound with foreign body of unspecified breast, sequelaCMS: Puncture wound with foreign body of unsp breast, sequelaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.05 Open bite of breast
S21.051 Open bite of right breast
S21.051AOpen bite of right breast, initial encounterCan lead a claimCNone
S21.051DOpen bite of right breast, subsequent encounterCan lead a claimCNone
S21.051SOpen bite of right breast, sequelaCan lead a claimCNone
S21.052 Open bite of left breast
S21.052AOpen bite of left breast, initial encounterCan lead a claimCNone
S21.052DOpen bite of left breast, subsequent encounterCan lead a claimCNone
S21.052SOpen bite of left breast, sequelaCan lead a claimCNone
S21.059 Open bite of unspecified breast
S21.059AOpen bite of unspecified breast, initial encounterCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.059DOpen bite of unspecified breast, subsequent encounterCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.059SOpen bite of unspecified breast, sequelaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.1 Open wound of front wall of thorax without penetration into thoracic cavity
S21.10 Unspecified open wound of front wall of thorax without penetration into thoracic cavity
S21.101 Unspecified open wound of right front wall of thorax without penetration into thoracic cavity
S21.101AUnspecified open wound of right front wall of thorax without penetration into thoracic cavity, initial encounterCMS: Unsp opn wnd r frnt wl of thorax w/o penet thor cavity, initCan lead a claimCNone
S21.101DUnspecified open wound of right front wall of thorax without penetration into thoracic cavity, subsequent encounterCMS: Unsp opn wnd r frnt wl of thorax w/o penet thor cavity, subsCan lead a claimCNone
S21.101SUnspecified open wound of right front wall of thorax without penetration into thoracic cavity, sequelaCMS: Unsp opn wnd r frnt wl of thorax w/o penet thor cavity, sqlaCan lead a claimCNone
S21.102 Unspecified open wound of left front wall of thorax without penetration into thoracic cavity
S21.102AUnspecified open wound of left front wall of thorax without penetration into thoracic cavity, initial encounterCMS: Unsp opn wnd l frnt wl of thorax w/o penet thor cavity, initCan lead a claimCNone
S21.102DUnspecified open wound of left front wall of thorax without penetration into thoracic cavity, subsequent encounterCMS: Unsp opn wnd l frnt wl of thorax w/o penet thor cavity, subsCan lead a claimCNone
S21.102SUnspecified open wound of left front wall of thorax without penetration into thoracic cavity, sequelaCMS: Unsp opn wnd l frnt wl of thorax w/o penet thor cavity, sqlaCan lead a claimCNone
S21.109 Unspecified open wound of unspecified front wall of thorax without penetration into thoracic cavity
S21.109AUnspecified open wound of unspecified front wall of thorax without penetration into thoracic cavity, initial encounterCMS: Unsp opn wnd unsp frnt wall of thrx w/o penet thor cav, initCannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the conditionNoneNone
S21.109DUnspecified open wound of unspecified front wall of thorax without penetration into thoracic cavity, subsequent encounterCMS: Unsp opn wnd unsp frnt wall of thrx w/o penet thor cav, subsCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.109SUnspecified open wound of unspecified front wall of thorax without penetration into thoracic cavity, sequelaCMS: Unsp opn wnd unsp frnt wall of thrx w/o penet thor cav, sqlaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.11 Laceration without foreign body of front wall of thorax without penetration into thoracic cavity
S21.111 Laceration without foreign body of right front wall of thorax without penetration into thoracic cavity
S21.111ALaceration without foreign body of right front wall of thorax without penetration into thoracic cavity, initial encounterCMS: Lac w/o fb of r frnt wl of thorax w/o penet thor cav, initCan lead a claimCNone
S21.111DLaceration without foreign body of right front wall of thorax without penetration into thoracic cavity, subsequent encounterCMS: Lac w/o fb of r frnt wl of thorax w/o penet thor cav, subsCan lead a claimCNone
S21.111SLaceration without foreign body of right front wall of thorax without penetration into thoracic cavity, sequelaCMS: Lac w/o fb of r frnt wl of thorax w/o penet thor cav, sqlaCan lead a claimCNone
S21.112 Laceration without foreign body of left front wall of thorax without penetration into thoracic cavity
S21.112ALaceration without foreign body of left front wall of thorax without penetration into thoracic cavity, initial encounterCMS: Lac w/o fb of l frnt wl of thorax w/o penet thor cav, initCan lead a claimCNone
S21.112DLaceration without foreign body of left front wall of thorax without penetration into thoracic cavity, subsequent encounterCMS: Lac w/o fb of l frnt wl of thorax w/o penet thor cav, subsCan lead a claimCNone
S21.112SLaceration without foreign body of left front wall of thorax without penetration into thoracic cavity, sequelaCMS: Lac w/o fb of l frnt wl of thorax w/o penet thor cav, sqlaCan lead a claimCNone
S21.119 Laceration without foreign body of unspecified front wall of thorax without penetration into thoracic cavity
S21.119ALaceration without foreign body of unspecified front wall of thorax without penetration into thoracic cavity, initial encounterCMS: Lac w/o fb of unsp frnt wl of thrx w/o penet thor cav, initCannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the conditionNoneNone
S21.119DLaceration without foreign body of unspecified front wall of thorax without penetration into thoracic cavity, subsequent encounterCMS: Lac w/o fb of unsp frnt wl of thrx w/o penet thor cav, subsCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.119SLaceration without foreign body of unspecified front wall of thorax without penetration into thoracic cavity, sequelaCMS: Lac w/o fb of unsp frnt wl of thrx w/o penet thor cav, sqlaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.12 Laceration with foreign body of front wall of thorax without penetration into thoracic cavity
S21.121 Laceration with foreign body of right front wall of thorax without penetration into thoracic cavity
S21.121ALaceration with foreign body of right front wall of thorax without penetration into thoracic cavity, initial encounterCMS: Lac w fb of r frnt wl of thorax w/o penet thor cavity, initCan lead a claimCNone
S21.121DLaceration with foreign body of right front wall of thorax without penetration into thoracic cavity, subsequent encounterCMS: Lac w fb of r frnt wl of thorax w/o penet thor cavity, subsCan lead a claimCNone
S21.121SLaceration with foreign body of right front wall of thorax without penetration into thoracic cavity, sequelaCMS: Lac w fb of r frnt wl of thorax w/o penet thor cavity, sqlaCan lead a claimCNone
S21.122 Laceration with foreign body of left front wall of thorax without penetration into thoracic cavity
S21.122ALaceration with foreign body of left front wall of thorax without penetration into thoracic cavity, initial encounterCMS: Lac w fb of l frnt wl of thorax w/o penet thor cavity, initCan lead a claimCNone
S21.122DLaceration with foreign body of left front wall of thorax without penetration into thoracic cavity, subsequent encounterCMS: Lac w fb of l frnt wl of thorax w/o penet thor cavity, subsCan lead a claimCNone
S21.122SLaceration with foreign body of left front wall of thorax without penetration into thoracic cavity, sequelaCMS: Lac w fb of l frnt wl of thorax w/o penet thor cavity, sqlaCan lead a claimCNone
S21.129 Laceration with foreign body of unspecified front wall of thorax without penetration into thoracic cavity
S21.129ALaceration with foreign body of unspecified front wall of thorax without penetration into thoracic cavity, initial encounterCMS: Lac w fb of unsp front wall of thrx w/o penet thor cav, initCannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the conditionNoneNone
S21.129DLaceration with foreign body of unspecified front wall of thorax without penetration into thoracic cavity, subsequent encounterCMS: Lac w fb of unsp front wall of thrx w/o penet thor cav, subsCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.129SLaceration with foreign body of unspecified front wall of thorax without penetration into thoracic cavity, sequelaCMS: Lac w fb of unsp front wall of thrx w/o penet thor cav, sqlaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.13 Puncture wound without foreign body of front wall of thorax without penetration into thoracic cavity
S21.131 Puncture wound without foreign body of right front wall of thorax without penetration into thoracic cavity
S21.131APuncture wound without foreign body of right front wall of thorax without penetration into thoracic cavity, initial encounterCMS: Pnctr w/o fb of r frnt wl of thorax w/o penet thor cav, initCan lead a claimCNone
S21.131DPuncture wound without foreign body of right front wall of thorax without penetration into thoracic cavity, subsequent encounterCMS: Pnctr w/o fb of r frnt wl of thorax w/o penet thor cav, subsCan lead a claimCNone
S21.131SPuncture wound without foreign body of right front wall of thorax without penetration into thoracic cavity, sequelaCMS: Pnctr w/o fb of r frnt wl of thorax w/o penet thor cav, sqlaCan lead a claimCNone
S21.132 Puncture wound without foreign body of left front wall of thorax without penetration into thoracic cavity
S21.132APuncture wound without foreign body of left front wall of thorax without penetration into thoracic cavity, initial encounterCMS: Pnctr w/o fb of l frnt wl of thorax w/o penet thor cav, initCan lead a claimCNone
S21.132DPuncture wound without foreign body of left front wall of thorax without penetration into thoracic cavity, subsequent encounterCMS: Pnctr w/o fb of l frnt wl of thorax w/o penet thor cav, subsCan lead a claimCNone
S21.132SPuncture wound without foreign body of left front wall of thorax without penetration into thoracic cavity, sequelaCMS: Pnctr w/o fb of l frnt wl of thorax w/o penet thor cav, sqlaCan lead a claimCNone
S21.139 Puncture wound without foreign body of unspecified front wall of thorax without penetration into thoracic cavity
S21.139APuncture wound without foreign body of unspecified front wall of thorax without penetration into thoracic cavity, initial encounterCMS: Pnctr w/o fb of unsp frnt wl of thrx w/o penet thor cav,initCannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the conditionNoneNone
S21.139DPuncture wound without foreign body of unspecified front wall of thorax without penetration into thoracic cavity, subsequent encounterCMS: Pnctr w/o fb of unsp frnt wl of thrx w/o penet thor cav,subsCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.139SPuncture wound without foreign body of unspecified front wall of thorax without penetration into thoracic cavity, sequelaCMS: Pnctr w/o fb of unsp frnt wl of thrx w/o penet thor cav,sqlaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.14 Puncture wound with foreign body of front wall of thorax without penetration into thoracic cavity
S21.141 Puncture wound with foreign body of right front wall of thorax without penetration into thoracic cavity
S21.141APuncture wound with foreign body of right front wall of thorax without penetration into thoracic cavity, initial encounterCMS: Pnctr w fb of r frnt wl of thorax w/o penet thor cav, initCan lead a claimCNone
S21.141DPuncture wound with foreign body of right front wall of thorax without penetration into thoracic cavity, subsequent encounterCMS: Pnctr w fb of r frnt wl of thorax w/o penet thor cav, subsCan lead a claimCNone
S21.141SPuncture wound with foreign body of right front wall of thorax without penetration into thoracic cavity, sequelaCMS: Pnctr w fb of r frnt wl of thorax w/o penet thor cav, sqlaCan lead a claimCNone
S21.142 Puncture wound with foreign body of left front wall of thorax without penetration into thoracic cavity
S21.142APuncture wound with foreign body of left front wall of thorax without penetration into thoracic cavity, initial encounterCMS: Pnctr w fb of l frnt wl of thorax w/o penet thor cav, initCan lead a claimCNone
S21.142DPuncture wound with foreign body of left front wall of thorax without penetration into thoracic cavity, subsequent encounterCMS: Pnctr w fb of l frnt wl of thorax w/o penet thor cav, subsCan lead a claimCNone
S21.142SPuncture wound with foreign body of left front wall of thorax without penetration into thoracic cavity, sequelaCMS: Pnctr w fb of l frnt wl of thorax w/o penet thor cav, sqlaCan lead a claimCNone
S21.149 Puncture wound with foreign body of unspecified front wall of thorax without penetration into thoracic cavity
S21.149APuncture wound with foreign body of unspecified front wall of thorax without penetration into thoracic cavity, initial encounterCMS: Pnctr w fb of unsp frnt wl of thrx w/o penet thor cav, initCannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the conditionNoneNone
S21.149DPuncture wound with foreign body of unspecified front wall of thorax without penetration into thoracic cavity, subsequent encounterCMS: Pnctr w fb of unsp frnt wl of thrx w/o penet thor cav, subsCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.149SPuncture wound with foreign body of unspecified front wall of thorax without penetration into thoracic cavity, sequelaCMS: Pnctr w fb of unsp frnt wl of thrx w/o penet thor cav, sqlaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.15 Open bite of front wall of thorax without penetration into thoracic cavity
S21.151 Open bite of right front wall of thorax without penetration into thoracic cavity
S21.151AOpen bite of right front wall of thorax without penetration into thoracic cavity, initial encounterCMS: Open bite of r frnt wl of thorax w/o penet thor cavity, initCan lead a claimCNone
S21.151DOpen bite of right front wall of thorax without penetration into thoracic cavity, subsequent encounterCMS: Open bite of r frnt wl of thorax w/o penet thor cavity, subsCan lead a claimCNone
S21.151SOpen bite of right front wall of thorax without penetration into thoracic cavity, sequelaCMS: Open bite of r frnt wl of thorax w/o penet thor cavity, sqlaCan lead a claimCNone
S21.152 Open bite of left front wall of thorax without penetration into thoracic cavity
S21.152AOpen bite of left front wall of thorax without penetration into thoracic cavity, initial encounterCMS: Open bite of l frnt wl of thorax w/o penet thor cavity, initCan lead a claimCNone
S21.152DOpen bite of left front wall of thorax without penetration into thoracic cavity, subsequent encounterCMS: Open bite of l frnt wl of thorax w/o penet thor cavity, subsCan lead a claimCNone
S21.152SOpen bite of left front wall of thorax without penetration into thoracic cavity, sequelaCMS: Open bite of l frnt wl of thorax w/o penet thor cavity, sqlaCan lead a claimCNone
S21.159 Open bite of unspecified front wall of thorax without penetration into thoracic cavity
S21.159AOpen bite of unspecified front wall of thorax without penetration into thoracic cavity, initial encounterCMS: Open bite of unsp frnt wall of thrx w/o penet thor cav, initCannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the conditionNoneNone
S21.159DOpen bite of unspecified front wall of thorax without penetration into thoracic cavity, subsequent encounterCMS: Open bite of unsp frnt wall of thrx w/o penet thor cav, subsCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.159SOpen bite of unspecified front wall of thorax without penetration into thoracic cavity, sequelaCMS: Open bite of unsp frnt wall of thrx w/o penet thor cav, sqlaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.2 Open wound of back wall of thorax without penetration into thoracic cavity
S21.20 Unspecified open wound of back wall of thorax without penetration into thoracic cavity
S21.201 Unspecified open wound of right back wall of thorax without penetration into thoracic cavity
S21.201AUnspecified open wound of right back wall of thorax without penetration into thoracic cavity, initial encounterCMS: Unsp opn wnd r bk wl of thorax w/o penet thor cavity, initCan lead a claimCNone
S21.201DUnspecified open wound of right back wall of thorax without penetration into thoracic cavity, subsequent encounterCMS: Unsp opn wnd r bk wl of thorax w/o penet thor cavity, subsCan lead a claimCNone
S21.201SUnspecified open wound of right back wall of thorax without penetration into thoracic cavity, sequelaCMS: Unsp opn wnd r bk wl of thorax w/o penet thor cavity, sqlaCan lead a claimCNone
S21.202 Unspecified open wound of left back wall of thorax without penetration into thoracic cavity
S21.202AUnspecified open wound of left back wall of thorax without penetration into thoracic cavity, initial encounterCMS: Unsp opn wnd l bk wl of thorax w/o penet thor cavity, initCan lead a claimCNone
S21.202DUnspecified open wound of left back wall of thorax without penetration into thoracic cavity, subsequent encounterCMS: Unsp opn wnd l bk wl of thorax w/o penet thor cavity, subsCan lead a claimCNone
S21.202SUnspecified open wound of left back wall of thorax without penetration into thoracic cavity, sequelaCMS: Unsp opn wnd l bk wl of thorax w/o penet thor cavity, sqlaCan lead a claimCNone
S21.209 Unspecified open wound of unspecified back wall of thorax without penetration into thoracic cavity
S21.209AUnspecified open wound of unspecified back wall of thorax without penetration into thoracic cavity, initial encounterCMS: Unsp opn wnd unsp bk wl of thorax w/o penet thor cav, initCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.209DUnspecified open wound of unspecified back wall of thorax without penetration into thoracic cavity, subsequent encounterCMS: Unsp opn wnd unsp bk wl of thorax w/o penet thor cav, subsCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.209SUnspecified open wound of unspecified back wall of thorax without penetration into thoracic cavity, sequelaCMS: Unsp opn wnd unsp bk wl of thorax w/o penet thor cav, sqlaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.21 Laceration without foreign body of back wall of thorax without penetration into thoracic cavity
S21.211 Laceration without foreign body of right back wall of thorax without penetration into thoracic cavity
S21.211ALaceration without foreign body of right back wall of thorax without penetration into thoracic cavity, initial encounterCMS: Lac w/o fb of r bk wl of thorax w/o penet thor cavity, initCan lead a claimCNone
S21.211DLaceration without foreign body of right back wall of thorax without penetration into thoracic cavity, subsequent encounterCMS: Lac w/o fb of r bk wl of thorax w/o penet thor cavity, subsCan lead a claimCNone
S21.211SLaceration without foreign body of right back wall of thorax without penetration into thoracic cavity, sequelaCMS: Lac w/o fb of r bk wl of thorax w/o penet thor cavity, sqlaCan lead a claimCNone
S21.212 Laceration without foreign body of left back wall of thorax without penetration into thoracic cavity
S21.212ALaceration without foreign body of left back wall of thorax without penetration into thoracic cavity, initial encounterCMS: Lac w/o fb of l bk wl of thorax w/o penet thor cavity, initCan lead a claimCNone
S21.212DLaceration without foreign body of left back wall of thorax without penetration into thoracic cavity, subsequent encounterCMS: Lac w/o fb of l bk wl of thorax w/o penet thor cavity, subsCan lead a claimCNone
S21.212SLaceration without foreign body of left back wall of thorax without penetration into thoracic cavity, sequelaCMS: Lac w/o fb of l bk wl of thorax w/o penet thor cavity, sqlaCan lead a claimCNone
S21.219 Laceration without foreign body of unspecified back wall of thorax without penetration into thoracic cavity
S21.219ALaceration without foreign body of unspecified back wall of thorax without penetration into thoracic cavity, initial encounterCMS: Lac w/o fb of unsp bk wl of thorax w/o penet thor cav, initCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.219DLaceration without foreign body of unspecified back wall of thorax without penetration into thoracic cavity, subsequent encounterCMS: Lac w/o fb of unsp bk wl of thorax w/o penet thor cav, subsCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.219SLaceration without foreign body of unspecified back wall of thorax without penetration into thoracic cavity, sequelaCMS: Lac w/o fb of unsp bk wl of thorax w/o penet thor cav, sqlaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.22 Laceration with foreign body of back wall of thorax without penetration into thoracic cavity
S21.221 Laceration with foreign body of right back wall of thorax without penetration into thoracic cavity
S21.221ALaceration with foreign body of right back wall of thorax without penetration into thoracic cavity, initial encounterCMS: Lac w fb of r bk wl of thorax w/o penet thor cavity, initCan lead a claimCNone
S21.221DLaceration with foreign body of right back wall of thorax without penetration into thoracic cavity, subsequent encounterCMS: Lac w fb of r bk wl of thorax w/o penet thor cavity, subsCan lead a claimCNone
S21.221SLaceration with foreign body of right back wall of thorax without penetration into thoracic cavity, sequelaCMS: Lac w fb of r bk wl of thorax w/o penet thor cavity, sequelaCan lead a claimCNone
S21.222 Laceration with foreign body of left back wall of thorax without penetration into thoracic cavity
S21.222ALaceration with foreign body of left back wall of thorax without penetration into thoracic cavity, initial encounterCMS: Lac w fb of l bk wl of thorax w/o penet thor cavity, initCan lead a claimCNone
S21.222DLaceration with foreign body of left back wall of thorax without penetration into thoracic cavity, subsequent encounterCMS: Lac w fb of l bk wl of thorax w/o penet thor cavity, subsCan lead a claimCNone
S21.222SLaceration with foreign body of left back wall of thorax without penetration into thoracic cavity, sequelaCMS: Lac w fb of l bk wl of thorax w/o penet thor cavity, sequelaCan lead a claimCNone
S21.229 Laceration with foreign body of unspecified back wall of thorax without penetration into thoracic cavity
S21.229ALaceration with foreign body of unspecified back wall of thorax without penetration into thoracic cavity, initial encounterCMS: Lac w fb of unsp bk wl of thorax w/o penet thor cavity, initCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.229DLaceration with foreign body of unspecified back wall of thorax without penetration into thoracic cavity, subsequent encounterCMS: Lac w fb of unsp bk wl of thorax w/o penet thor cavity, subsCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.229SLaceration with foreign body of unspecified back wall of thorax without penetration into thoracic cavity, sequelaCMS: Lac w fb of unsp bk wl of thorax w/o penet thor cavity, sqlaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.23 Puncture wound without foreign body of back wall of thorax without penetration into thoracic cavity
S21.231 Puncture wound without foreign body of right back wall of thorax without penetration into thoracic cavity
S21.231APuncture wound without foreign body of right back wall of thorax without penetration into thoracic cavity, initial encounterCMS: Pnctr w/o fb of r bk wl of thorax w/o penet thor cav, initCan lead a claimCNone
S21.231DPuncture wound without foreign body of right back wall of thorax without penetration into thoracic cavity, subsequent encounterCMS: Pnctr w/o fb of r bk wl of thorax w/o penet thor cav, subsCan lead a claimCNone
S21.231SPuncture wound without foreign body of right back wall of thorax without penetration into thoracic cavity, sequelaCMS: Pnctr w/o fb of r bk wl of thorax w/o penet thor cav, sqlaCan lead a claimCNone
S21.232 Puncture wound without foreign body of left back wall of thorax without penetration into thoracic cavity
S21.232APuncture wound without foreign body of left back wall of thorax without penetration into thoracic cavity, initial encounterCMS: Pnctr w/o fb of l bk wl of thorax w/o penet thor cav, initCan lead a claimCNone
S21.232DPuncture wound without foreign body of left back wall of thorax without penetration into thoracic cavity, subsequent encounterCMS: Pnctr w/o fb of l bk wl of thorax w/o penet thor cav, subsCan lead a claimCNone
S21.232SPuncture wound without foreign body of left back wall of thorax without penetration into thoracic cavity, sequelaCMS: Pnctr w/o fb of l bk wl of thorax w/o penet thor cav, sqlaCan lead a claimCNone
S21.239 Puncture wound without foreign body of unspecified back wall of thorax without penetration into thoracic cavity
S21.239APuncture wound without foreign body of unspecified back wall of thorax without penetration into thoracic cavity, initial encounterCMS: Pnctr w/o fb of unsp bk wl of thrx w/o penet thor cav, initCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.239DPuncture wound without foreign body of unspecified back wall of thorax without penetration into thoracic cavity, subsequent encounterCMS: Pnctr w/o fb of unsp bk wl of thrx w/o penet thor cav, subsCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.239SPuncture wound without foreign body of unspecified back wall of thorax without penetration into thoracic cavity, sequelaCMS: Pnctr w/o fb of unsp bk wl of thrx w/o penet thor cav, sqlaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.24 Puncture wound with foreign body of back wall of thorax without penetration into thoracic cavity
S21.241 Puncture wound with foreign body of right back wall of thorax without penetration into thoracic cavity
S21.241APuncture wound with foreign body of right back wall of thorax without penetration into thoracic cavity, initial encounterCMS: Pnctr w fb of r bk wl of thorax w/o penet thor cavity, initCan lead a claimCNone
S21.241DPuncture wound with foreign body of right back wall of thorax without penetration into thoracic cavity, subsequent encounterCMS: Pnctr w fb of r bk wl of thorax w/o penet thor cavity, subsCan lead a claimCNone
S21.241SPuncture wound with foreign body of right back wall of thorax without penetration into thoracic cavity, sequelaCMS: Pnctr w fb of r bk wl of thorax w/o penet thor cavity, sqlaCan lead a claimCNone
S21.242 Puncture wound with foreign body of left back wall of thorax without penetration into thoracic cavity
S21.242APuncture wound with foreign body of left back wall of thorax without penetration into thoracic cavity, initial encounterCMS: Pnctr w fb of l bk wl of thorax w/o penet thor cavity, initCan lead a claimCNone
S21.242DPuncture wound with foreign body of left back wall of thorax without penetration into thoracic cavity, subsequent encounterCMS: Pnctr w fb of l bk wl of thorax w/o penet thor cavity, subsCan lead a claimCNone
S21.242SPuncture wound with foreign body of left back wall of thorax without penetration into thoracic cavity, sequelaCMS: Pnctr w fb of l bk wl of thorax w/o penet thor cavity, sqlaCan lead a claimCNone
S21.249 Puncture wound with foreign body of unspecified back wall of thorax without penetration into thoracic cavity
S21.249APuncture wound with foreign body of unspecified back wall of thorax without penetration into thoracic cavity, initial encounterCMS: Pnctr w fb of unsp bk wl of thorax w/o penet thor cav, initCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.249DPuncture wound with foreign body of unspecified back wall of thorax without penetration into thoracic cavity, subsequent encounterCMS: Pnctr w fb of unsp bk wl of thorax w/o penet thor cav, subsCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.249SPuncture wound with foreign body of unspecified back wall of thorax without penetration into thoracic cavity, sequelaCMS: Pnctr w fb of unsp bk wl of thorax w/o penet thor cav, sqlaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.25 Open bite of back wall of thorax without penetration into thoracic cavity
S21.251 Open bite of right back wall of thorax without penetration into thoracic cavity
S21.251AOpen bite of right back wall of thorax without penetration into thoracic cavity, initial encounterCMS: Open bite of r bk wl of thorax w/o penet thor cavity, initCan lead a claimCNone
S21.251DOpen bite of right back wall of thorax without penetration into thoracic cavity, subsequent encounterCMS: Open bite of r bk wl of thorax w/o penet thor cavity, subsCan lead a claimCNone
S21.251SOpen bite of right back wall of thorax without penetration into thoracic cavity, sequelaCMS: Open bite of r bk wl of thorax w/o penet thor cavity, sqlaCan lead a claimCNone
S21.252 Open bite of left back wall of thorax without penetration into thoracic cavity
S21.252AOpen bite of left back wall of thorax without penetration into thoracic cavity, initial encounterCMS: Open bite of l bk wl of thorax w/o penet thor cavity, initCan lead a claimCNone
S21.252DOpen bite of left back wall of thorax without penetration into thoracic cavity, subsequent encounterCMS: Open bite of l bk wl of thorax w/o penet thor cavity, subsCan lead a claimCNone
S21.252SOpen bite of left back wall of thorax without penetration into thoracic cavity, sequelaCMS: Open bite of l bk wl of thorax w/o penet thor cavity, sqlaCan lead a claimCNone
S21.259 Open bite of unspecified back wall of thorax without penetration into thoracic cavity
S21.259AOpen bite of unspecified back wall of thorax without penetration into thoracic cavity, initial encounterCMS: Open bite of unsp bk wl of thorax w/o penet thor cav, initCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.259DOpen bite of unspecified back wall of thorax without penetration into thoracic cavity, subsequent encounterCMS: Open bite of unsp bk wl of thorax w/o penet thor cav, subsCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.259SOpen bite of unspecified back wall of thorax without penetration into thoracic cavity, sequelaCMS: Open bite of unsp bk wl of thorax w/o penet thor cav, sqlaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.3 Open wound of front wall of thorax with penetration into thoracic cavity
S21.30 Unspecified open wound of front wall of thorax with penetration into thoracic cavity
S21.301 Unspecified open wound of right front wall of thorax with penetration into thoracic cavity
S21.301AUnspecified open wound of right front wall of thorax with penetration into thoracic cavity, initial encounterCMS: Unsp opn wnd r frnt wl of thorax w penet thor cavity, initCan lead a claimCNone
S21.301DUnspecified open wound of right front wall of thorax with penetration into thoracic cavity, subsequent encounterCMS: Unsp opn wnd r frnt wl of thorax w penet thor cavity, subsCan lead a claimCNone
S21.301SUnspecified open wound of right front wall of thorax with penetration into thoracic cavity, sequelaCMS: Unsp opn wnd r frnt wl of thorax w penet thor cavity, sqlaCan lead a claimCNone
S21.302 Unspecified open wound of left front wall of thorax with penetration into thoracic cavity
S21.302AUnspecified open wound of left front wall of thorax with penetration into thoracic cavity, initial encounterCMS: Unsp opn wnd l frnt wl of thorax w penet thor cavity, initCan lead a claimCNone
S21.302DUnspecified open wound of left front wall of thorax with penetration into thoracic cavity, subsequent encounterCMS: Unsp opn wnd l frnt wl of thorax w penet thor cavity, subsCan lead a claimCNone
S21.302SUnspecified open wound of left front wall of thorax with penetration into thoracic cavity, sequelaCMS: Unsp opn wnd l frnt wl of thorax w penet thor cavity, sqlaCan lead a claimCNone
S21.309 Unspecified open wound of unspecified front wall of thorax with penetration into thoracic cavity
S21.309AUnspecified open wound of unspecified front wall of thorax with penetration into thoracic cavity, initial encounterCMS: Unsp opn wnd unsp front wall of thrx w penet thor cav, initCannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the conditionNoneNone
S21.309DUnspecified open wound of unspecified front wall of thorax with penetration into thoracic cavity, subsequent encounterCMS: Unsp opn wnd unsp front wall of thrx w penet thor cav, subsCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.309SUnspecified open wound of unspecified front wall of thorax with penetration into thoracic cavity, sequelaCMS: Unsp opn wnd unsp front wall of thrx w penet thor cav, sqlaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.31 Laceration without foreign body of front wall of thorax with penetration into thoracic cavity
S21.311 Laceration without foreign body of right front wall of thorax with penetration into thoracic cavity
S21.311ALaceration without foreign body of right front wall of thorax with penetration into thoracic cavity, initial encounterCMS: Lac w/o fb of r frnt wl of thorax w penet thor cavity, initCan lead a claimCNone
S21.311DLaceration without foreign body of right front wall of thorax with penetration into thoracic cavity, subsequent encounterCMS: Lac w/o fb of r frnt wl of thorax w penet thor cavity, subsCan lead a claimCNone
S21.311SLaceration without foreign body of right front wall of thorax with penetration into thoracic cavity, sequelaCMS: Lac w/o fb of r frnt wl of thorax w penet thor cavity, sqlaCan lead a claimCNone
S21.312 Laceration without foreign body of left front wall of thorax with penetration into thoracic cavity
S21.312ALaceration without foreign body of left front wall of thorax with penetration into thoracic cavity, initial encounterCMS: Lac w/o fb of l frnt wl of thorax w penet thor cavity, initCan lead a claimCNone
S21.312DLaceration without foreign body of left front wall of thorax with penetration into thoracic cavity, subsequent encounterCMS: Lac w/o fb of l frnt wl of thorax w penet thor cavity, subsCan lead a claimCNone
S21.312SLaceration without foreign body of left front wall of thorax with penetration into thoracic cavity, sequelaCMS: Lac w/o fb of l frnt wl of thorax w penet thor cavity, sqlaCan lead a claimCNone
S21.319 Laceration without foreign body of unspecified front wall of thorax with penetration into thoracic cavity
S21.319ALaceration without foreign body of unspecified front wall of thorax with penetration into thoracic cavity, initial encounterCMS: Lac w/o fb of unsp front wall of thrx w penet thor cav, initCannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the conditionNoneNone
S21.319DLaceration without foreign body of unspecified front wall of thorax with penetration into thoracic cavity, subsequent encounterCMS: Lac w/o fb of unsp front wall of thrx w penet thor cav, subsCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.319SLaceration without foreign body of unspecified front wall of thorax with penetration into thoracic cavity, sequelaCMS: Lac w/o fb of unsp front wall of thrx w penet thor cav, sqlaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.32 Laceration with foreign body of front wall of thorax with penetration into thoracic cavity
S21.321 Laceration with foreign body of right front wall of thorax with penetration into thoracic cavity
S21.321ALaceration with foreign body of right front wall of thorax with penetration into thoracic cavity, initial encounterCMS: Lac w fb of r frnt wl of thorax w penet thor cavity, initCan lead a claimCNone
S21.321DLaceration with foreign body of right front wall of thorax with penetration into thoracic cavity, subsequent encounterCMS: Lac w fb of r frnt wl of thorax w penet thor cavity, subsCan lead a claimCNone
S21.321SLaceration with foreign body of right front wall of thorax with penetration into thoracic cavity, sequelaCMS: Lac w fb of r frnt wl of thorax w penet thor cavity, sequelaCan lead a claimCNone
S21.322 Laceration with foreign body of left front wall of thorax with penetration into thoracic cavity
S21.322ALaceration with foreign body of left front wall of thorax with penetration into thoracic cavity, initial encounterCMS: Lac w fb of l frnt wl of thorax w penet thor cavity, initCan lead a claimCNone
S21.322DLaceration with foreign body of left front wall of thorax with penetration into thoracic cavity, subsequent encounterCMS: Lac w fb of l frnt wl of thorax w penet thor cavity, subsCan lead a claimCNone
S21.322SLaceration with foreign body of left front wall of thorax with penetration into thoracic cavity, sequelaCMS: Lac w fb of l frnt wl of thorax w penet thor cavity, sequelaCan lead a claimCNone
S21.329 Laceration with foreign body of unspecified front wall of thorax with penetration into thoracic cavity
S21.329ALaceration with foreign body of unspecified front wall of thorax with penetration into thoracic cavity, initial encounterCMS: Lac w fb of unsp front wall of thorax w penet thor cav, initCannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the conditionNoneNone
S21.329DLaceration with foreign body of unspecified front wall of thorax with penetration into thoracic cavity, subsequent encounterCMS: Lac w fb of unsp front wall of thorax w penet thor cav, subsCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.329SLaceration with foreign body of unspecified front wall of thorax with penetration into thoracic cavity, sequelaCMS: Lac w fb of unsp front wall of thorax w penet thor cav, sqlaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.33 Puncture wound without foreign body of front wall of thorax with penetration into thoracic cavity
S21.331 Puncture wound without foreign body of right front wall of thorax with penetration into thoracic cavity
S21.331APuncture wound without foreign body of right front wall of thorax with penetration into thoracic cavity, initial encounterCMS: Pnctr w/o fb of r frnt wl of thorax w penet thor cav, initCan lead a claimCNone
S21.331DPuncture wound without foreign body of right front wall of thorax with penetration into thoracic cavity, subsequent encounterCMS: Pnctr w/o fb of r frnt wl of thorax w penet thor cav, subsCan lead a claimCNone
S21.331SPuncture wound without foreign body of right front wall of thorax with penetration into thoracic cavity, sequelaCMS: Pnctr w/o fb of r frnt wl of thorax w penet thor cav, sqlaCan lead a claimCNone
S21.332 Puncture wound without foreign body of left front wall of thorax with penetration into thoracic cavity
S21.332APuncture wound without foreign body of left front wall of thorax with penetration into thoracic cavity, initial encounterCMS: Pnctr w/o fb of l frnt wl of thorax w penet thor cav, initCan lead a claimCNone
S21.332DPuncture wound without foreign body of left front wall of thorax with penetration into thoracic cavity, subsequent encounterCMS: Pnctr w/o fb of l frnt wl of thorax w penet thor cav, subsCan lead a claimCNone
S21.332SPuncture wound without foreign body of left front wall of thorax with penetration into thoracic cavity, sequelaCMS: Pnctr w/o fb of l frnt wl of thorax w penet thor cav, sqlaCan lead a claimCNone
S21.339 Puncture wound without foreign body of unspecified front wall of thorax with penetration into thoracic cavity
S21.339APuncture wound without foreign body of unspecified front wall of thorax with penetration into thoracic cavity, initial encounterCMS: Pnctr w/o fb of unsp frnt wl of thrx w penet thor cav, initCannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the conditionNoneNone
S21.339DPuncture wound without foreign body of unspecified front wall of thorax with penetration into thoracic cavity, subsequent encounterCMS: Pnctr w/o fb of unsp frnt wl of thrx w penet thor cav, subsCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.339SPuncture wound without foreign body of unspecified front wall of thorax with penetration into thoracic cavity, sequelaCMS: Pnctr w/o fb of unsp frnt wl of thrx w penet thor cav, sqlaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.34 Puncture wound with foreign body of front wall of thorax with penetration into thoracic cavity
S21.341 Puncture wound with foreign body of right front wall of thorax with penetration into thoracic cavity
S21.341APuncture wound with foreign body of right front wall of thorax with penetration into thoracic cavity, initial encounterCMS: Pnctr w fb of r frnt wl of thorax w penet thor cavity, initCan lead a claimCNone
S21.341DPuncture wound with foreign body of right front wall of thorax with penetration into thoracic cavity, subsequent encounterCMS: Pnctr w fb of r frnt wl of thorax w penet thor cavity, subsCan lead a claimCNone
S21.341SPuncture wound with foreign body of right front wall of thorax with penetration into thoracic cavity, sequelaCMS: Pnctr w fb of r frnt wl of thorax w penet thor cavity, sqlaCan lead a claimCNone
S21.342 Puncture wound with foreign body of left front wall of thorax with penetration into thoracic cavity
S21.342APuncture wound with foreign body of left front wall of thorax with penetration into thoracic cavity, initial encounterCMS: Pnctr w fb of l frnt wl of thorax w penet thor cavity, initCan lead a claimCNone
S21.342DPuncture wound with foreign body of left front wall of thorax with penetration into thoracic cavity, subsequent encounterCMS: Pnctr w fb of l frnt wl of thorax w penet thor cavity, subsCan lead a claimCNone
S21.342SPuncture wound with foreign body of left front wall of thorax with penetration into thoracic cavity, sequelaCMS: Pnctr w fb of l frnt wl of thorax w penet thor cavity, sqlaCan lead a claimCNone
S21.349 Puncture wound with foreign body of unspecified front wall of thorax with penetration into thoracic cavity
S21.349APuncture wound with foreign body of unspecified front wall of thorax with penetration into thoracic cavity, initial encounterCMS: Pnctr w fb of unsp front wall of thrx w penet thor cav, initCannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the conditionNoneNone
S21.349DPuncture wound with foreign body of unspecified front wall of thorax with penetration into thoracic cavity, subsequent encounterCMS: Pnctr w fb of unsp front wall of thrx w penet thor cav, subsCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.349SPuncture wound with foreign body of unspecified front wall of thorax with penetration into thoracic cavity, sequelaCMS: Pnctr w fb of unsp front wall of thrx w penet thor cav, sqlaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.35 Open bite of front wall of thorax with penetration into thoracic cavity
S21.351 Open bite of right front wall of thorax with penetration into thoracic cavity
S21.351AOpen bite of right front wall of thorax with penetration into thoracic cavity, initial encounterCMS: Open bite of r frnt wl of thorax w penet thor cavity, initCan lead a claimCNone
S21.351DOpen bite of right front wall of thorax with penetration into thoracic cavity, subsequent encounterCMS: Open bite of r frnt wl of thorax w penet thor cavity, subsCan lead a claimCNone
S21.351SOpen bite of right front wall of thorax with penetration into thoracic cavity, sequelaCMS: Open bite of r frnt wl of thorax w penet thor cavity, sqlaCan lead a claimCNone
S21.352 Open bite of left front wall of thorax with penetration into thoracic cavity
S21.352AOpen bite of left front wall of thorax with penetration into thoracic cavity, initial encounterCMS: Open bite of l frnt wl of thorax w penet thor cavity, initCan lead a claimCNone
S21.352DOpen bite of left front wall of thorax with penetration into thoracic cavity, subsequent encounterCMS: Open bite of l frnt wl of thorax w penet thor cavity, subsCan lead a claimCNone
S21.352SOpen bite of left front wall of thorax with penetration into thoracic cavity, sequelaCMS: Open bite of l frnt wl of thorax w penet thor cavity, sqlaCan lead a claimCNone
S21.359 Open bite of unspecified front wall of thorax with penetration into thoracic cavity
S21.359AOpen bite of unspecified front wall of thorax with penetration into thoracic cavity, initial encounterCMS: Open bite of unsp front wall of thrx w penet thor cav, initCannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the conditionNoneNone
S21.359DOpen bite of unspecified front wall of thorax with penetration into thoracic cavity, subsequent encounterCMS: Open bite of unsp front wall of thrx w penet thor cav, subsCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.359SOpen bite of unspecified front wall of thorax with penetration into thoracic cavity, sequelaCMS: Open bite of unsp front wall of thrx w penet thor cav, sqlaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.4 Open wound of back wall of thorax with penetration into thoracic cavity
S21.40 Unspecified open wound of back wall of thorax with penetration into thoracic cavity
S21.401 Unspecified open wound of right back wall of thorax with penetration into thoracic cavity
S21.401AUnspecified open wound of right back wall of thorax with penetration into thoracic cavity, initial encounterCMS: Unsp opn wnd r bk wl of thorax w penet thoracic cavity, initCan lead a claimCNone
S21.401DUnspecified open wound of right back wall of thorax with penetration into thoracic cavity, subsequent encounterCMS: Unsp opn wnd r bk wl of thorax w penet thoracic cavity, subsCan lead a claimCNone
S21.401SUnspecified open wound of right back wall of thorax with penetration into thoracic cavity, sequelaCMS: Unsp opn wnd r bk wl of thorax w penet thor cavity, sequelaCan lead a claimCNone
S21.402 Unspecified open wound of left back wall of thorax with penetration into thoracic cavity
S21.402AUnspecified open wound of left back wall of thorax with penetration into thoracic cavity, initial encounterCMS: Unsp opn wnd l bk wl of thorax w penet thoracic cavity, initCan lead a claimCNone
S21.402DUnspecified open wound of left back wall of thorax with penetration into thoracic cavity, subsequent encounterCMS: Unsp opn wnd l bk wl of thorax w penet thoracic cavity, subsCan lead a claimCNone
S21.402SUnspecified open wound of left back wall of thorax with penetration into thoracic cavity, sequelaCMS: Unsp opn wnd l bk wl of thorax w penet thor cavity, sequelaCan lead a claimCNone
S21.409 Unspecified open wound of unspecified back wall of thorax with penetration into thoracic cavity
S21.409AUnspecified open wound of unspecified back wall of thorax with penetration into thoracic cavity, initial encounterCMS: Unsp opn wnd unsp bk wl of thorax w penet thor cavity, initCannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the conditionNoneNone
S21.409DUnspecified open wound of unspecified back wall of thorax with penetration into thoracic cavity, subsequent encounterCMS: Unsp opn wnd unsp bk wl of thorax w penet thor cavity, subsCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.409SUnspecified open wound of unspecified back wall of thorax with penetration into thoracic cavity, sequelaCMS: Unsp opn wnd unsp bk wl of thorax w penet thor cavity, sqlaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.41 Laceration without foreign body of back wall of thorax with penetration into thoracic cavity
S21.411 Laceration without foreign body of right back wall of thorax with penetration into thoracic cavity
S21.411ALaceration without foreign body of right back wall of thorax with penetration into thoracic cavity, initial encounterCMS: Lac w/o fb of r bk wl of thorax w penet thor cavity, initCan lead a claimCNone
S21.411DLaceration without foreign body of right back wall of thorax with penetration into thoracic cavity, subsequent encounterCMS: Lac w/o fb of r bk wl of thorax w penet thor cavity, subsCan lead a claimCNone
S21.411SLaceration without foreign body of right back wall of thorax with penetration into thoracic cavity, sequelaCMS: Lac w/o fb of r bk wl of thorax w penet thor cavity, sequelaCan lead a claimCNone
S21.412 Laceration without foreign body of left back wall of thorax with penetration into thoracic cavity
S21.412ALaceration without foreign body of left back wall of thorax with penetration into thoracic cavity, initial encounterCMS: Lac w/o fb of l bk wl of thorax w penet thor cavity, initCan lead a claimCNone
S21.412DLaceration without foreign body of left back wall of thorax with penetration into thoracic cavity, subsequent encounterCMS: Lac w/o fb of l bk wl of thorax w penet thor cavity, subsCan lead a claimCNone
S21.412SLaceration without foreign body of left back wall of thorax with penetration into thoracic cavity, sequelaCMS: Lac w/o fb of l bk wl of thorax w penet thor cavity, sequelaCan lead a claimCNone
S21.419 Laceration without foreign body of unspecified back wall of thorax with penetration into thoracic cavity
S21.419ALaceration without foreign body of unspecified back wall of thorax with penetration into thoracic cavity, initial encounterCMS: Lac w/o fb of unsp bk wl of thorax w penet thor cavity, initCannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the conditionNoneNone
S21.419DLaceration without foreign body of unspecified back wall of thorax with penetration into thoracic cavity, subsequent encounterCMS: Lac w/o fb of unsp bk wl of thorax w penet thor cavity, subsCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.419SLaceration without foreign body of unspecified back wall of thorax with penetration into thoracic cavity, sequelaCMS: Lac w/o fb of unsp bk wl of thorax w penet thor cavity, sqlaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.42 Laceration with foreign body of back wall of thorax with penetration into thoracic cavity
S21.421 Laceration with foreign body of right back wall of thorax with penetration into thoracic cavity
S21.421ALaceration with foreign body of right back wall of thorax with penetration into thoracic cavity, initial encounterCMS: Lac w fb of r bk wl of thorax w penet thoracic cavity, initCan lead a claimCNone
S21.421DLaceration with foreign body of right back wall of thorax with penetration into thoracic cavity, subsequent encounterCMS: Lac w fb of r bk wl of thorax w penet thoracic cavity, subsCan lead a claimCNone
S21.421SLaceration with foreign body of right back wall of thorax with penetration into thoracic cavity, sequelaCMS: Lac w fb of r bk wl of thorax w penet thor cavity, sequelaCan lead a claimCNone
S21.422 Laceration with foreign body of left back wall of thorax with penetration into thoracic cavity
S21.422ALaceration with foreign body of left back wall of thorax with penetration into thoracic cavity, initial encounterCMS: Lac w fb of l bk wl of thorax w penet thoracic cavity, initCan lead a claimCNone
S21.422DLaceration with foreign body of left back wall of thorax with penetration into thoracic cavity, subsequent encounterCMS: Lac w fb of l bk wl of thorax w penet thoracic cavity, subsCan lead a claimCNone
S21.422SLaceration with foreign body of left back wall of thorax with penetration into thoracic cavity, sequelaCMS: Lac w fb of l bk wl of thorax w penet thor cavity, sequelaCan lead a claimCNone
S21.429 Laceration with foreign body of unspecified back wall of thorax with penetration into thoracic cavity
S21.429ALaceration with foreign body of unspecified back wall of thorax with penetration into thoracic cavity, initial encounterCMS: Lac w fb of unsp bk wl of thorax w penet thor cavity, initCannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the conditionNoneNone
S21.429DLaceration with foreign body of unspecified back wall of thorax with penetration into thoracic cavity, subsequent encounterCMS: Lac w fb of unsp bk wl of thorax w penet thor cavity, subsCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.429SLaceration with foreign body of unspecified back wall of thorax with penetration into thoracic cavity, sequelaCMS: Lac w fb of unsp bk wl of thorax w penet thor cavity, sqlaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.43 Puncture wound without foreign body of back wall of thorax with penetration into thoracic cavity
S21.431 Puncture wound without foreign body of right back wall of thorax with penetration into thoracic cavity
S21.431APuncture wound without foreign body of right back wall of thorax with penetration into thoracic cavity, initial encounterCMS: Pnctr w/o fb of r bk wl of thorax w penet thor cavity, initCan lead a claimCNone
S21.431DPuncture wound without foreign body of right back wall of thorax with penetration into thoracic cavity, subsequent encounterCMS: Pnctr w/o fb of r bk wl of thorax w penet thor cavity, subsCan lead a claimCNone
S21.431SPuncture wound without foreign body of right back wall of thorax with penetration into thoracic cavity, sequelaCMS: Pnctr w/o fb of r bk wl of thorax w penet thor cavity, sqlaCan lead a claimCNone
S21.432 Puncture wound without foreign body of left back wall of thorax with penetration into thoracic cavity
S21.432APuncture wound without foreign body of left back wall of thorax with penetration into thoracic cavity, initial encounterCMS: Pnctr w/o fb of l bk wl of thorax w penet thor cavity, initCan lead a claimCNone
S21.432DPuncture wound without foreign body of left back wall of thorax with penetration into thoracic cavity, subsequent encounterCMS: Pnctr w/o fb of l bk wl of thorax w penet thor cavity, subsCan lead a claimCNone
S21.432SPuncture wound without foreign body of left back wall of thorax with penetration into thoracic cavity, sequelaCMS: Pnctr w/o fb of l bk wl of thorax w penet thor cavity, sqlaCan lead a claimCNone
S21.439 Puncture wound without foreign body of unspecified back wall of thorax with penetration into thoracic cavity
S21.439APuncture wound without foreign body of unspecified back wall of thorax with penetration into thoracic cavity, initial encounterCMS: Pnctr w/o fb of unsp bk wl of thorax w penet thor cav, initCannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the conditionNoneNone
S21.439DPuncture wound without foreign body of unspecified back wall of thorax with penetration into thoracic cavity, subsequent encounterCMS: Pnctr w/o fb of unsp bk wl of thorax w penet thor cav, subsCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.439SPuncture wound without foreign body of unspecified back wall of thorax with penetration into thoracic cavity, sequelaCMS: Pnctr w/o fb of unsp bk wl of thorax w penet thor cav, sqlaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.44 Puncture wound with foreign body of back wall of thorax with penetration into thoracic cavity
S21.441 Puncture wound with foreign body of right back wall of thorax with penetration into thoracic cavity
S21.441APuncture wound with foreign body of right back wall of thorax with penetration into thoracic cavity, initial encounterCMS: Pnctr w fb of r bk wl of thorax w penet thor cavity, initCan lead a claimCNone
S21.441DPuncture wound with foreign body of right back wall of thorax with penetration into thoracic cavity, subsequent encounterCMS: Pnctr w fb of r bk wl of thorax w penet thor cavity, subsCan lead a claimCNone
S21.441SPuncture wound with foreign body of right back wall of thorax with penetration into thoracic cavity, sequelaCMS: Pnctr w fb of r bk wl of thorax w penet thor cavity, sequelaCan lead a claimCNone
S21.442 Puncture wound with foreign body of left back wall of thorax with penetration into thoracic cavity
S21.442APuncture wound with foreign body of left back wall of thorax with penetration into thoracic cavity, initial encounterCMS: Pnctr w fb of l bk wl of thorax w penet thor cavity, initCan lead a claimCNone
S21.442DPuncture wound with foreign body of left back wall of thorax with penetration into thoracic cavity, subsequent encounterCMS: Pnctr w fb of l bk wl of thorax w penet thor cavity, subsCan lead a claimCNone
S21.442SPuncture wound with foreign body of left back wall of thorax with penetration into thoracic cavity, sequelaCMS: Pnctr w fb of l bk wl of thorax w penet thor cavity, sequelaCan lead a claimCNone
S21.449 Puncture wound with foreign body of unspecified back wall of thorax with penetration into thoracic cavity
S21.449APuncture wound with foreign body of unspecified back wall of thorax with penetration into thoracic cavity, initial encounterCMS: Pnctr w fb of unsp bk wl of thorax w penet thor cavity, initCannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the conditionNoneNone
S21.449DPuncture wound with foreign body of unspecified back wall of thorax with penetration into thoracic cavity, subsequent encounterCMS: Pnctr w fb of unsp bk wl of thorax w penet thor cavity, subsCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.449SPuncture wound with foreign body of unspecified back wall of thorax with penetration into thoracic cavity, sequelaCMS: Pnctr w fb of unsp bk wl of thorax w penet thor cavity, sqlaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.45 Open bite of back wall of thorax with penetration into thoracic cavity
S21.451 Open bite of right back wall of thorax with penetration into thoracic cavity
S21.451AOpen bite of right back wall of thorax with penetration into thoracic cavity, initial encounterCMS: Open bite of r bk wl of thorax w penet thoracic cavity, initCan lead a claimCNone
S21.451DOpen bite of right back wall of thorax with penetration into thoracic cavity, subsequent encounterCMS: Open bite of r bk wl of thorax w penet thoracic cavity, subsCan lead a claimCNone
S21.451SOpen bite of right back wall of thorax with penetration into thoracic cavity, sequelaCMS: Open bite of r bk wl of thorax w penet thor cavity, sequelaCan lead a claimCNone
S21.452 Open bite of left back wall of thorax with penetration into thoracic cavity
S21.452AOpen bite of left back wall of thorax with penetration into thoracic cavity, initial encounterCMS: Open bite of l bk wl of thorax w penet thoracic cavity, initCan lead a claimCNone
S21.452DOpen bite of left back wall of thorax with penetration into thoracic cavity, subsequent encounterCMS: Open bite of l bk wl of thorax w penet thoracic cavity, subsCan lead a claimCNone
S21.452SOpen bite of left back wall of thorax with penetration into thoracic cavity, sequelaCMS: Open bite of l bk wl of thorax w penet thor cavity, sequelaCan lead a claimCNone
S21.459 Open bite of unspecified back wall of thorax with penetration into thoracic cavity
S21.459AOpen bite of unspecified back wall of thorax with penetration into thoracic cavity, initial encounterCMS: Open bite of unsp bk wl of thorax w penet thor cavity, initCannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the conditionNoneNone
S21.459DOpen bite of unspecified back wall of thorax with penetration into thoracic cavity, subsequent encounterCMS: Open bite of unsp bk wl of thorax w penet thor cavity, subsCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.459SOpen bite of unspecified back wall of thorax with penetration into thoracic cavity, sequelaCMS: Open bite of unsp bk wl of thorax w penet thor cavity, sqlaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.9 Open wound of unspecified part of thorax
S21.90 Unspecified open wound of unspecified part of thorax
S21.90XAUnspecified open wound of unspecified part of thorax, initial encounterCMS: Unsp open wound of unspecified part of thorax, init encntrCannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the conditionNoneNone
S21.90XDUnspecified open wound of unspecified part of thorax, subsequent encounterCMS: Unsp open wound of unspecified part of thorax, subs encntrCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.90XSUnspecified open wound of unspecified part of thorax, sequelaCMS: Unsp open wound of unspecified part of thorax, sequelaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.91 Laceration without foreign body of unspecified part of thorax
S21.91XALaceration without foreign body of unspecified part of thorax, initial encounterCMS: Laceration w/o foreign body of unsp part of thorax, initCannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the conditionNoneNone
S21.91XDLaceration without foreign body of unspecified part of thorax, subsequent encounterCMS: Laceration w/o foreign body of unsp part of thorax, subsCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.91XSLaceration without foreign body of unspecified part of thorax, sequelaCMS: Laceration w/o foreign body of unsp part of thorax, sequelaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.92 Laceration with foreign body of unspecified part of thorax
S21.92XALaceration with foreign body of unspecified part of thorax, initial encounterCMS: Laceration w foreign body of unsp part of thorax, initCannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the conditionNoneNone
S21.92XDLaceration with foreign body of unspecified part of thorax, subsequent encounterCMS: Laceration w foreign body of unsp part of thorax, subsCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.92XSLaceration with foreign body of unspecified part of thorax, sequelaCMS: Laceration with foreign body of unsp part of thorax, sequelaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.93 Puncture wound without foreign body of unspecified part of thorax
S21.93XAPuncture wound without foreign body of unspecified part of thorax, initial encounterCMS: Puncture wound w/o foreign body of unsp part of thorax, initCannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the conditionNoneNone
S21.93XDPuncture wound without foreign body of unspecified part of thorax, subsequent encounterCMS: Puncture wound w/o foreign body of unsp part of thorax, subsCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.93XSPuncture wound without foreign body of unspecified part of thorax, sequelaCMS: Pnctr w/o foreign body of unsp part of thorax, sequelaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.94 Puncture wound with foreign body of unspecified part of thorax
S21.94XAPuncture wound with foreign body of unspecified part of thorax, initial encounterCMS: Puncture wound w foreign body of unsp part of thorax, initCannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the conditionNoneNone
S21.94XDPuncture wound with foreign body of unspecified part of thorax, subsequent encounterCMS: Puncture wound w foreign body of unsp part of thorax, subsCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.94XSPuncture wound with foreign body of unspecified part of thorax, sequelaCMS: Pnctr w foreign body of unsp part of thorax, sequelaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.95 Open bite of unspecified part of thorax
S21.95XAOpen bite of unspecified part of thorax, initial encounterCannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the conditionNoneNone
S21.95XDOpen bite of unspecified part of thorax, subsequent encounterCMS: Open bite of unspecified part of thorax, subs encntrCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S21.95XSOpen bite of unspecified part of thorax, sequelaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone

Sources: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01, for the clinical group, comorbidity subgroup, code-first conventions and primary-position flags; CDC NCHS ICD-10-CM FY2027 code descriptions for the family title and code wording. This is the crosswalk Medicare runs a claim through. Grouping also depends on admission source, timing, the OASIS functional items and the rest of the diagnosis list.

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