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

S88 Traumatic amputation of lower leg

All 54 codes in the S88 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

54

Can lead a claim

36

Cannot lead a claim

18

What CMS assigns to S88

36 of the 54 codes group to Musculoskeletal Rehabilitation; 18 are assigned no clinical group. None of the 54 is assigned a comorbidity subgroup. 36 of the 54 can lead a claim.

Every code in S88

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

CodeDescriptionPrimary positionClinical groupComorbidity subgroup
S88.0 Traumatic amputation at knee level
S88.01 Complete traumatic amputation at knee level
S88.011 Complete traumatic amputation at knee level, right lower leg
S88.011AComplete traumatic amputation at knee level, right lower leg, initial encounterCMS: Complete traumatic amputation at knee level, r low leg, initCan lead a claimENone
S88.011DComplete traumatic amputation at knee level, right lower leg, subsequent encounterCMS: Complete traumatic amputation at knee level, r low leg, subsCan lead a claimENone
S88.011SComplete traumatic amputation at knee level, right lower leg, sequelaCMS: Complete traumatic amp at knee level, r low leg, sequelaCan lead a claimENone
S88.012 Complete traumatic amputation at knee level, left lower leg
S88.012AComplete traumatic amputation at knee level, left lower leg, initial encounterCMS: Complete traumatic amputation at knee level, l low leg, initCan lead a claimENone
S88.012DComplete traumatic amputation at knee level, left lower leg, subsequent encounterCMS: Complete traumatic amputation at knee level, l low leg, subsCan lead a claimENone
S88.012SComplete traumatic amputation at knee level, left lower leg, sequelaCMS: Complete traumatic amp at knee level, l low leg, sequelaCan lead a claimENone
S88.019 Complete traumatic amputation at knee level, unspecified lower leg
S88.019AComplete traumatic amputation at knee level, unspecified lower leg, initial encounterCMS: Complete traumatic amp at knee level, unsp lower leg, 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
S88.019DComplete traumatic amputation at knee level, unspecified lower leg, subsequent encounterCMS: Complete traumatic amp at knee level, unsp lower leg, subsCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S88.019SComplete traumatic amputation at knee level, unspecified lower leg, sequelaCMS: Complete traumatic amp at knee level, unsp low leg, sequelaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S88.02 Partial traumatic amputation at knee level
S88.021 Partial traumatic amputation at knee level, right lower leg
S88.021APartial traumatic amputation at knee level, right lower leg, initial encounterCMS: Partial traumatic amputation at knee level, r low leg, initCan lead a claimENone
S88.021DPartial traumatic amputation at knee level, right lower leg, subsequent encounterCMS: Partial traumatic amputation at knee level, r low leg, subsCan lead a claimENone
S88.021SPartial traumatic amputation at knee level, right lower leg, sequelaCMS: Partial traumatic amp at knee level, r low leg, sequelaCan lead a claimENone
S88.022 Partial traumatic amputation at knee level, left lower leg
S88.022APartial traumatic amputation at knee level, left lower leg, initial encounterCMS: Partial traumatic amputation at knee level, l low leg, initCan lead a claimENone
S88.022DPartial traumatic amputation at knee level, left lower leg, subsequent encounterCMS: Partial traumatic amputation at knee level, l low leg, subsCan lead a claimENone
S88.022SPartial traumatic amputation at knee level, left lower leg, sequelaCMS: Partial traumatic amp at knee level, l low leg, sequelaCan lead a claimENone
S88.029 Partial traumatic amputation at knee level, unspecified lower leg
S88.029APartial traumatic amputation at knee level, unspecified lower leg, initial encounterCMS: Partial traumatic amp at knee level, unsp lower leg, 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
S88.029DPartial traumatic amputation at knee level, unspecified lower leg, subsequent encounterCMS: Partial traumatic amp at knee level, unsp lower leg, subsCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S88.029SPartial traumatic amputation at knee level, unspecified lower leg, sequelaCMS: Partial traumatic amp at knee level, unsp lower leg, sequelaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S88.1 Traumatic amputation at level between knee and ankle
S88.11 Complete traumatic amputation at level between knee and ankle
S88.111 Complete traumatic amputation at level between knee and ankle, right lower leg
S88.111AComplete traumatic amputation at level between knee and ankle, right lower leg, initial encounterCMS: Complete traum amp at lev betw kn and ankl, r low leg, initCan lead a claimENone
S88.111DComplete traumatic amputation at level between knee and ankle, right lower leg, subsequent encounterCMS: Complete traum amp at lev betw kn and ankl, r low leg, subsCan lead a claimENone
S88.111SComplete traumatic amputation at level between knee and ankle, right lower leg, sequelaCMS: Complete traum amp at lev betw kn and ankl, r low leg, sqlaCan lead a claimENone
S88.112 Complete traumatic amputation at level between knee and ankle, left lower leg
S88.112AComplete traumatic amputation at level between knee and ankle, left lower leg, initial encounterCMS: Complete traum amp at lev betw kn and ankl, l low leg, initCan lead a claimENone
S88.112DComplete traumatic amputation at level between knee and ankle, left lower leg, subsequent encounterCMS: Complete traum amp at lev betw kn and ankl, l low leg, subsCan lead a claimENone
S88.112SComplete traumatic amputation at level between knee and ankle, left lower leg, sequelaCMS: Complete traum amp at lev betw kn and ankl, l low leg, sqlaCan lead a claimENone
S88.119 Complete traumatic amputation at level between knee and ankle, unspecified lower leg
S88.119AComplete traumatic amputation at level between knee and ankle, unspecified lower leg, initial encounterCMS: Complete traum amp at lev betw kn & ankl, unsp low leg, 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
S88.119DComplete traumatic amputation at level between knee and ankle, unspecified lower leg, subsequent encounterCMS: Complete traum amp at lev betw kn & ankl, unsp low leg, subsCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S88.119SComplete traumatic amputation at level between knee and ankle, unspecified lower leg, sequelaCMS: Complete traum amp at lev betw kn & ankl, unsp low leg, sqlaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S88.12 Partial traumatic amputation at level between knee and ankle
S88.121 Partial traumatic amputation at level between knee and ankle, right lower leg
S88.121APartial traumatic amputation at level between knee and ankle, right lower leg, initial encounterCMS: Part traum amp at level betw knee and ankle, r low leg, initCan lead a claimENone
S88.121DPartial traumatic amputation at level between knee and ankle, right lower leg, subsequent encounterCMS: Part traum amp at level betw knee and ankle, r low leg, subsCan lead a claimENone
S88.121SPartial traumatic amputation at level between knee and ankle, right lower leg, sequelaCMS: Part traum amp at level betw knee and ankle, r low leg, sqlaCan lead a claimENone
S88.122 Partial traumatic amputation at level between knee and ankle, left lower leg
S88.122APartial traumatic amputation at level between knee and ankle, left lower leg, initial encounterCMS: Part traum amp at level betw knee and ankle, l low leg, initCan lead a claimENone
S88.122DPartial traumatic amputation at level between knee and ankle, left lower leg, subsequent encounterCMS: Part traum amp at level betw knee and ankle, l low leg, subsCan lead a claimENone
S88.122SPartial traumatic amputation at level between knee and ankle, left lower leg, sequelaCMS: Part traum amp at level betw knee and ankle, l low leg, sqlaCan lead a claimENone
S88.129 Partial traumatic amputation at level between knee and ankle, unspecified lower leg
S88.129APartial traumatic amputation at level between knee and ankle, unspecified lower leg, initial encounterCMS: Part traum amp at lev betw knee and ankl, unsp low leg, 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
S88.129DPartial traumatic amputation at level between knee and ankle, unspecified lower leg, subsequent encounterCMS: Part traum amp at lev betw knee and ankl, unsp low leg, subsCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S88.129SPartial traumatic amputation at level between knee and ankle, unspecified lower leg, sequelaCMS: Part traum amp at lev betw knee and ankl, unsp low leg, sqlaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S88.9 Traumatic amputation of lower leg, level unspecified
S88.91 Complete traumatic amputation of lower leg, level unspecified
S88.911 Complete traumatic amputation of right lower leg, level unspecified
S88.911AComplete traumatic amputation of right lower leg, level unspecified, initial encounterCMS: Complete traumatic amputation of r low leg, level unsp, initCan lead a claimENone
S88.911DComplete traumatic amputation of right lower leg, level unspecified, subsequent encounterCMS: Complete traumatic amputation of r low leg, level unsp, subsCan lead a claimENone
S88.911SComplete traumatic amputation of right lower leg, level unspecified, sequelaCMS: Complete traumatic amp of r low leg, level unsp, sequelaCan lead a claimENone
S88.912 Complete traumatic amputation of left lower leg, level unspecified
S88.912AComplete traumatic amputation of left lower leg, level unspecified, initial encounterCMS: Complete traumatic amputation of l low leg, level unsp, initCan lead a claimENone
S88.912DComplete traumatic amputation of left lower leg, level unspecified, subsequent encounterCMS: Complete traumatic amputation of l low leg, level unsp, subsCan lead a claimENone
S88.912SComplete traumatic amputation of left lower leg, level unspecified, sequelaCMS: Complete traumatic amp of l low leg, level unsp, sequelaCan lead a claimENone
S88.919 Complete traumatic amputation of unspecified lower leg, level unspecified
S88.919AComplete traumatic amputation of unspecified lower leg, level unspecified, initial encounterCMS: Complete traumatic amp of unsp lower leg, level unsp, initCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S88.919DComplete traumatic amputation of unspecified lower leg, level unspecified, subsequent encounterCMS: Complete traumatic amp of unsp lower leg, level unsp, subsCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S88.919SComplete traumatic amputation of unspecified lower leg, level unspecified, sequelaCMS: Complete traumatic amp of unsp low leg, level unsp, sequelaCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S88.92 Partial traumatic amputation of lower leg, level unspecified
S88.921 Partial traumatic amputation of right lower leg, level unspecified
S88.921APartial traumatic amputation of right lower leg, level unspecified, initial encounterCMS: Partial traumatic amputation of r low leg, level unsp, initCan lead a claimENone
S88.921DPartial traumatic amputation of right lower leg, level unspecified, subsequent encounterCMS: Partial traumatic amputation of r low leg, level unsp, subsCan lead a claimENone
S88.921SPartial traumatic amputation of right lower leg, level unspecified, sequelaCMS: Partial traumatic amp of r low leg, level unsp, sequelaCan lead a claimENone
S88.922 Partial traumatic amputation of left lower leg, level unspecified
S88.922APartial traumatic amputation of left lower leg, level unspecified, initial encounterCMS: Partial traumatic amputation of l low leg, level unsp, initCan lead a claimENone
S88.922DPartial traumatic amputation of left lower leg, level unspecified, subsequent encounterCMS: Partial traumatic amputation of l low leg, level unsp, subsCan lead a claimENone
S88.922SPartial traumatic amputation of left lower leg, level unspecified, sequelaCMS: Partial traumatic amp of l low leg, level unsp, sequelaCan lead a claimENone
S88.929 Partial traumatic amputation of unspecified lower leg, level unspecified
S88.929APartial traumatic amputation of unspecified lower leg, level unspecified, initial encounterCMS: Partial traumatic amp of unsp lower leg, level unsp, 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
S88.929DPartial traumatic amputation of unspecified lower leg, level unspecified, subsequent encounterCMS: Partial traumatic amp of unsp lower leg, level unsp, subsCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
S88.929SPartial traumatic amputation of unspecified lower leg, level unspecified, sequelaCMS: Partial traumatic amp of unsp lower leg, level unsp, 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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