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

W58 Contact with crocodile or alligator

All 24 codes in the W58 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

24

Can lead a claim

0

Cannot lead a claim

24

What CMS assigns to W58

None of the 24 codes is assigned a clinical group. None of the 24 is assigned a comorbidity subgroup. None can lead a claim.

Every code in W58

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

CodeDescriptionPrimary positionClinical groupComorbidity subgroup
W58.0 Contact with alligator
W58.01 Bitten by alligator
W58.01XABitten by alligator, initial encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W58.01XDBitten by alligator, subsequent encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W58.01XSBitten by alligator, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W58.02 Struck by alligator
W58.02XAStruck by alligator, initial encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W58.02XDStruck by alligator, subsequent encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W58.02XSStruck by alligator, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W58.03 Crushed by alligator
W58.03XACrushed by alligator, initial encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W58.03XDCrushed by alligator, subsequent encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W58.03XSCrushed by alligator, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W58.09 Other contact with alligator
W58.09XAOther contact with alligator, initial encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W58.09XDOther contact with alligator, subsequent encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W58.09XSOther contact with alligator, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W58.1 Contact with crocodile
W58.11 Bitten by crocodile
W58.11XABitten by crocodile, initial encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W58.11XDBitten by crocodile, subsequent encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W58.11XSBitten by crocodile, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W58.12 Struck by crocodile
W58.12XAStruck by crocodile, initial encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W58.12XDStruck by crocodile, subsequent encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W58.12XSStruck by crocodile, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W58.13 Crushed by crocodile
W58.13XACrushed by crocodile, initial encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W58.13XDCrushed by crocodile, subsequent encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W58.13XSCrushed by crocodile, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W58.19 Other contact with crocodile
W58.19XAOther contact with crocodile, initial encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W58.19XDOther contact with crocodile, subsequent encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
W58.19XSOther contact with crocodile, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone

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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