ICD-10 · PDGM grouping
W49 Exposure to other inanimate mechanical forces
All 18 codes in the W49 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
18
Can lead a claim
0
Cannot lead a claim
18
What CMS assigns to W49
None of the 18 codes is assigned a clinical group. None of the 18 is assigned a comorbidity subgroup. None can lead a claim.
Every code in W49
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 |
|---|---|---|---|---|
| W49.0 Item causing external constriction | ||||
| W49.01 Hair causing external constriction | ||||
| W49.01XA | Hair causing external constriction, initial encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W49.01XD | Hair causing external constriction, subsequent encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W49.01XS | Hair causing external constriction, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W49.02 String or thread causing external constriction | ||||
| W49.02XA | String or thread causing external constriction, initial encounterCMS: String or thread causing external constriction, init encntr | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W49.02XD | String or thread causing external constriction, subsequent encounterCMS: String or thread causing external constriction, subs encntr | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W49.02XS | String or thread causing external constriction, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W49.03 Rubber band causing external constriction | ||||
| W49.03XA | Rubber band causing external constriction, initial encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W49.03XD | Rubber band causing external constriction, subsequent encounterCMS: Rubber band causing external constriction, subs encntr | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W49.03XS | Rubber band causing external constriction, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W49.04 Ring or other jewelry causing external constriction | ||||
| W49.04XA | Ring or other jewelry causing external constriction, initial encounterCMS: Ring or oth jewelry causing external constriction, init | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W49.04XD | Ring or other jewelry causing external constriction, subsequent encounterCMS: Ring or oth jewelry causing external constriction, subs | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W49.04XS | Ring or other jewelry causing external constriction, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W49.09 Other specified item causing external constriction | ||||
| W49.09XA | Other specified item causing external constriction, initial encounterCMS: Oth item causing external constriction, init encntr | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W49.09XD | Other specified item causing external constriction, subsequent encounterCMS: Oth item causing external constriction, subs encntr | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W49.09XS | Other specified item causing external constriction, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W49.9 Exposure to other inanimate mechanical forces | ||||
| W49.9XXA | Exposure to other inanimate mechanical forces, initial encounterCMS: Exposure to other inanimate mechanical forces, init encntr | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W49.9XXD | Exposure to other inanimate mechanical forces, subsequent encounterCMS: Exposure to other inanimate mechanical forces, subs encntr | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W49.9XXS | Exposure to other inanimate mechanical forces, 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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