ICD-10 · PDGM grouping
W53 Contact with rodent
All 24 codes in the W53 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.
Codes in family
24
Can lead a claim
0
Cannot lead a claim
24
What CMS assigns to W53
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 W53
Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.
| Code | Description | Primary position | Clinical group | Comorbidity subgroup |
|---|---|---|---|---|
| W53.0 Contact with mouse | ||||
| W53.01 Bitten by mouse | ||||
| W53.01XA | Bitten by mouse, initial encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W53.01XD | Bitten by mouse, subsequent encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W53.01XS | Bitten by mouse, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W53.09 Other contact with mouse | ||||
| W53.09XA | Other contact with mouse, initial encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W53.09XD | Other contact with mouse, subsequent encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W53.09XS | Other contact with mouse, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W53.1 Contact with rat | ||||
| W53.11 Bitten by rat | ||||
| W53.11XA | Bitten by rat, initial encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W53.11XD | Bitten by rat, subsequent encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W53.11XS | Bitten by rat, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W53.19 Other contact with rat | ||||
| W53.19XA | Other contact with rat, initial encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W53.19XD | Other contact with rat, subsequent encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W53.19XS | Other contact with rat, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W53.2 Contact with squirrel | ||||
| W53.21 Bitten by squirrel | ||||
| W53.21XA | Bitten by squirrel, initial encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W53.21XD | Bitten by squirrel, subsequent encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W53.21XS | Bitten by squirrel, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W53.29 Other contact with squirrel | ||||
| W53.29XA | Other contact with squirrel, initial encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W53.29XD | Other contact with squirrel, subsequent encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W53.29XS | Other contact with squirrel, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W53.8 Contact with other rodent | ||||
| W53.81 Bitten by other rodent | ||||
| W53.81XA | Bitten by other rodent, initial encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W53.81XD | Bitten by other rodent, subsequent encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W53.81XS | Bitten by other rodent, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W53.89 Other contact with other rodent | ||||
| W53.89XA | Other contact with other rodent, initial encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W53.89XD | Other contact with other rodent, subsequent encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W53.89XS | Other contact with other rodent, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
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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