ICD-10 · PDGM grouping
W56 Contact with nonvenomous marine animal
All 63 codes in the W56 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
63
Can lead a claim
0
Cannot lead a claim
63
What CMS assigns to W56
None of the 63 codes is assigned a clinical group. None of the 63 is assigned a comorbidity subgroup. None can lead a claim.
Every code in W56
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 |
|---|---|---|---|---|
| W56.0 Contact with dolphin | ||||
| W56.01 Bitten by dolphin | ||||
| W56.01XA | Bitten by dolphin, initial encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.01XD | Bitten by dolphin, subsequent encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.01XS | Bitten by dolphin, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.02 Struck by dolphin | ||||
| W56.02XA | Struck by dolphin, initial encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.02XD | Struck by dolphin, subsequent encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.02XS | Struck by dolphin, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.09 Other contact with dolphin | ||||
| W56.09XA | Other contact with dolphin, initial encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.09XD | Other contact with dolphin, subsequent encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.09XS | Other contact with dolphin, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.1 Contact with sea lion | ||||
| W56.11 Bitten by sea lion | ||||
| W56.11XA | Bitten by sea lion, initial encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.11XD | Bitten by sea lion, subsequent encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.11XS | Bitten by sea lion, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.12 Struck by sea lion | ||||
| W56.12XA | Struck by sea lion, initial encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.12XD | Struck by sea lion, subsequent encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.12XS | Struck by sea lion, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.19 Other contact with sea lion | ||||
| W56.19XA | Other contact with sea lion, initial encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.19XD | Other contact with sea lion, subsequent encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.19XS | Other contact with sea lion, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.2 Contact with orca | ||||
| W56.21 Bitten by orca | ||||
| W56.21XA | Bitten by orca, initial encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.21XD | Bitten by orca, subsequent encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.21XS | Bitten by orca, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.22 Struck by orca | ||||
| W56.22XA | Struck by orca, initial encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.22XD | Struck by orca, subsequent encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.22XS | Struck by orca, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.29 Other contact with orca | ||||
| W56.29XA | Other contact with orca, initial encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.29XD | Other contact with orca, subsequent encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.29XS | Other contact with orca, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.3 Contact with other marine mammals | ||||
| W56.31 Bitten by other marine mammals | ||||
| W56.31XA | Bitten by other marine mammals, initial encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.31XD | Bitten by other marine mammals, subsequent encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.31XS | Bitten by other marine mammals, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.32 Struck by other marine mammals | ||||
| W56.32XA | Struck by other marine mammals, initial encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.32XD | Struck by other marine mammals, subsequent encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.32XS | Struck by other marine mammals, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.39 Other contact with other marine mammals | ||||
| W56.39XA | Other contact with other marine mammals, initial encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.39XD | Other contact with other marine mammals, subsequent encounterCMS: Other contact with other marine mammals, subs encntr | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.39XS | Other contact with other marine mammals, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.4 Contact with shark | ||||
| W56.41 Bitten by shark | ||||
| W56.41XA | Bitten by shark, initial encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.41XD | Bitten by shark, subsequent encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.41XS | Bitten by shark, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.42 Struck by shark | ||||
| W56.42XA | Struck by shark, initial encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.42XD | Struck by shark, subsequent encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.42XS | Struck by shark, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.49 Other contact with shark | ||||
| W56.49XA | Other contact with shark, initial encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.49XD | Other contact with shark, subsequent encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.49XS | Other contact with shark, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.5 Contact with other fish | ||||
| W56.51 Bitten by other fish | ||||
| W56.51XA | Bitten by other fish, initial encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.51XD | Bitten by other fish, subsequent encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.51XS | Bitten by other fish, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.52 Struck by other fish | ||||
| W56.52XA | Struck by other fish, initial encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.52XD | Struck by other fish, subsequent encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.52XS | Struck by other fish, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.59 Other contact with other fish | ||||
| W56.59XA | Other contact with other fish, initial encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.59XD | Other contact with other fish, subsequent encounter | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.59XS | Other contact with other fish, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.8 Contact with other nonvenomous marine animals | ||||
| W56.81 Bitten by other nonvenomous marine animals | ||||
| W56.81XA | Bitten by other nonvenomous marine animals, initial encounterCMS: Bitten by other nonvenomous marine animals, init encntr | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.81XD | Bitten by other nonvenomous marine animals, subsequent encounterCMS: Bitten by other nonvenomous marine animals, subs encntr | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.81XS | Bitten by other nonvenomous marine animals, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.82 Struck by other nonvenomous marine animals | ||||
| W56.82XA | Struck by other nonvenomous marine animals, initial encounterCMS: Struck by other nonvenomous marine animals, init encntr | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.82XD | Struck by other nonvenomous marine animals, subsequent encounterCMS: Struck by other nonvenomous marine animals, subs encntr | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.82XS | Struck by other nonvenomous marine animals, sequela | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.89 Other contact with other nonvenomous marine animals | ||||
| W56.89XA | Other contact with other nonvenomous marine animals, initial encounterCMS: Oth contact with oth nonvenomous marine animals, init encntr | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.89XD | Other contact with other nonvenomous marine animals, subsequent encounterCMS: Oth contact with oth nonvenomous marine animals, subs encntr | Cannot lead a claimExternal cause of injury code not reportable as principal diagnosis | None | None |
| W56.89XS | Other contact with other nonvenomous marine animals, 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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