ICD-10-CM category
W56: Contact with nonvenomous marine animal
Codes under W56 (Contact with nonvenomous marine animal). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| W56.0 | Contact with dolphin | — |
| W56.0 | Contact with dolphin | — |
| W56.01 | Bitten by dolphin | — |
| W56.01 | Bitten by dolphin | — |
| W56.1 | Contact with sea lion | — |
| W56.1 | Contact with sea lion | — |
| W56.01XA | Bitten by dolphin, initial encounter | ✓ |
| W56.01XA | Bitten by dolphin, initial encounter | ✓ |
| W56.01XD | Bitten by dolphin, subsequent encounter | ✓ |
| W56.01XD | Bitten by dolphin, subsequent encounter | ✓ |
| W56.01XS | Bitten by dolphin, sequela | ✓ |
| W56.01XS | Bitten by dolphin, sequela | ✓ |
| W56.02 | Struck by dolphin | — |
| W56.02 | Struck by dolphin | — |
| W56.2 | Contact with orca | — |
| W56.2 | Contact with orca | — |
| W56.02XA | Struck by dolphin, initial encounter | ✓ |
| W56.02XA | Struck by dolphin, initial encounter | ✓ |
| W56.02XD | Struck by dolphin, subsequent encounter | ✓ |
| W56.02XD | Struck by dolphin, subsequent encounter | ✓ |
| W56.02XS | Struck by dolphin, sequela | ✓ |
| W56.02XS | Struck by dolphin, sequela | ✓ |
| W56.3 | Contact with other marine mammals | — |
| W56.3 | Contact with other marine mammals | — |
| W56.4 | Contact with shark | — |
| W56.4 | Contact with shark | — |
| W56.5 | Contact with other fish | — |
| W56.5 | Contact with other fish | — |
| W56.8 | Contact with other nonvenomous marine animals | — |
| W56.8 | Contact with other nonvenomous marine animals | — |
| W56.09 | Other contact with dolphin | — |
| W56.09 | Other contact with dolphin | — |
| W56.09XA | Other contact with dolphin, initial encounter | ✓ |
| W56.09XA | Other contact with dolphin, initial encounter | ✓ |
| W56.09XD | Other contact with dolphin, subsequent encounter | ✓ |
| W56.09XD | Other contact with dolphin, subsequent encounter | ✓ |
| W56.09XS | Other contact with dolphin, sequela | ✓ |
| W56.09XS | Other contact with dolphin, sequela | ✓ |
| W56.11 | Bitten by sea lion | — |
| W56.11 | Bitten by sea lion | — |
| W56.11XA | Bitten by sea lion, initial encounter | ✓ |
| W56.11XA | Bitten by sea lion, initial encounter | ✓ |
| W56.11XD | Bitten by sea lion, subsequent encounter | ✓ |
| W56.11XD | Bitten by sea lion, subsequent encounter | ✓ |
| W56.11XS | Bitten by sea lion, sequela | ✓ |
| W56.11XS | Bitten by sea lion, sequela | ✓ |
| W56.12 | Struck by sea lion | — |
| W56.12 | Struck by sea lion | — |
| W56.12XA | Struck by sea lion, initial encounter | ✓ |
| W56.12XA | Struck by sea lion, initial encounter | ✓ |
| W56.12XD | Struck by sea lion, subsequent encounter | ✓ |
| W56.12XD | Struck by sea lion, subsequent encounter | ✓ |
| W56.12XS | Struck by sea lion, sequela | ✓ |
| W56.12XS | Struck by sea lion, sequela | ✓ |
| W56.19 | Other contact with sea lion | — |
| W56.19 | Other contact with sea lion | — |
| W56.19XA | Other contact with sea lion, initial encounter | ✓ |
| W56.19XA | Other contact with sea lion, initial encounter | ✓ |
| W56.19XD | Other contact with sea lion, subsequent encounter | ✓ |
| W56.19XD | Other contact with sea lion, subsequent encounter | ✓ |
| W56.19XS | Other contact with sea lion, sequela | ✓ |
| W56.19XS | Other contact with sea lion, sequela | ✓ |
| W56.21 | Bitten by orca | — |
| W56.21 | Bitten by orca | — |
| W56.21XA | Bitten by orca, initial encounter | ✓ |
| W56.21XA | Bitten by orca, initial encounter | ✓ |
| W56.21XD | Bitten by orca, subsequent encounter | ✓ |
| W56.21XD | Bitten by orca, subsequent encounter | ✓ |
| W56.21XS | Bitten by orca, sequela | ✓ |
| W56.21XS | Bitten by orca, sequela | ✓ |
| W56.22 | Struck by orca | — |
| W56.22 | Struck by orca | — |
| W56.22XA | Struck by orca, initial encounter | ✓ |
| W56.22XA | Struck by orca, initial encounter | ✓ |
| W56.22XD | Struck by orca, subsequent encounter | ✓ |
| W56.22XD | Struck by orca, subsequent encounter | ✓ |
| W56.22XS | Struck by orca, sequela | ✓ |
| W56.22XS | Struck by orca, sequela | ✓ |
| W56.29 | Other contact with orca | — |
| W56.29 | Other contact with orca | — |
| W56.29XA | Other contact with orca, initial encounter | ✓ |
| W56.29XA | Other contact with orca, initial encounter | ✓ |
| W56.29XD | Other contact with orca, subsequent encounter | ✓ |
| W56.29XD | Other contact with orca, subsequent encounter | ✓ |
| W56.29XS | Other contact with orca, sequela | ✓ |
| W56.29XS | Other contact with orca, sequela | ✓ |
| W56.31 | Bitten by other marine mammals | — |
| W56.31 | Bitten by other marine mammals | — |
| W56.31XA | Bitten by other marine mammals, initial encounter | ✓ |
| W56.31XA | Bitten by other marine mammals, initial encounter | ✓ |
| W56.31XD | Bitten by other marine mammals, subsequent encounter | ✓ |
| W56.31XD | Bitten by other marine mammals, subsequent encounter | ✓ |
| W56.31XS | Bitten by other marine mammals, sequela | ✓ |
| W56.31XS | Bitten by other marine mammals, sequela | ✓ |
| W56.32 | Struck by other marine mammals | — |
| W56.32 | Struck by other marine mammals | — |
| W56.32XA | Struck by other marine mammals, initial encounter | ✓ |
| W56.32XA | Struck by other marine mammals, initial encounter | ✓ |
| W56.32XD | Struck by other marine mammals, subsequent encounter | ✓ |
| W56.32XD | Struck by other marine mammals, subsequent encounter | ✓ |
| W56.32XS | Struck by other marine mammals, sequela | ✓ |
| W56.32XS | Struck by other marine mammals, sequela | ✓ |
| W56.39 | Other contact with other marine mammals | — |
| W56.39 | Other contact with other marine mammals | — |
| W56.39XA | Other contact with other marine mammals, initial encounter | ✓ |
| W56.39XA | Other contact with other marine mammals, initial encounter | ✓ |
| W56.39XD | Other contact with other marine mammals, subsequent encounter | ✓ |
| W56.39XD | Other contact with other marine mammals, subsequent encounter | ✓ |
| W56.39XS | Other contact with other marine mammals, sequela | ✓ |
| W56.39XS | Other contact with other marine mammals, sequela | ✓ |
| W56.41 | Bitten by shark | — |
| W56.41 | Bitten by shark | — |
| W56.41XA | Bitten by shark, initial encounter | ✓ |
| W56.41XA | Bitten by shark, initial encounter | ✓ |
| W56.41XD | Bitten by shark, subsequent encounter | ✓ |
| W56.41XD | Bitten by shark, subsequent encounter | ✓ |
| W56.41XS | Bitten by shark, sequela | ✓ |
| W56.41XS | Bitten by shark, sequela | ✓ |
| W56.42 | Struck by shark | — |
| W56.42 | Struck by shark | — |
| W56.42XA | Struck by shark, initial encounter | ✓ |
| W56.42XA | Struck by shark, initial encounter | ✓ |
| W56.42XD | Struck by shark, subsequent encounter | ✓ |
| W56.42XD | Struck by shark, subsequent encounter | ✓ |
| W56.42XS | Struck by shark, sequela | ✓ |
| W56.42XS | Struck by shark, sequela | ✓ |
| W56.49 | Other contact with shark | — |
| W56.49 | Other contact with shark | — |
| W56.49XA | Other contact with shark, initial encounter | ✓ |
| W56.49XA | Other contact with shark, initial encounter | ✓ |
| W56.49XD | Other contact with shark, subsequent encounter | ✓ |
| W56.49XD | Other contact with shark, subsequent encounter | ✓ |
| W56.49XS | Other contact with shark, sequela | ✓ |
| W56.49XS | Other contact with shark, sequela | ✓ |
| W56.51 | Bitten by other fish | — |
| W56.51 | Bitten by other fish | — |
| W56.51XA | Bitten by other fish, initial encounter | ✓ |
| W56.51XA | Bitten by other fish, initial encounter | ✓ |
| W56.51XD | Bitten by other fish, subsequent encounter | ✓ |
| W56.51XD | Bitten by other fish, subsequent encounter | ✓ |
| W56.51XS | Bitten by other fish, sequela | ✓ |
| W56.51XS | Bitten by other fish, sequela | ✓ |
| W56.52 | Struck by other fish | — |
| W56.52 | Struck by other fish | — |
| W56.52XA | Struck by other fish, initial encounter | ✓ |
| W56.52XA | Struck by other fish, initial encounter | ✓ |
| W56.52XD | Struck by other fish, subsequent encounter | ✓ |
| W56.52XD | Struck by other fish, subsequent encounter | ✓ |
| W56.52XS | Struck by other fish, sequela | ✓ |
| W56.52XS | Struck by other fish, sequela | ✓ |
| W56.59 | Other contact with other fish | — |
| W56.59 | Other contact with other fish | — |
| W56.59XA | Other contact with other fish, initial encounter | ✓ |
| W56.59XA | Other contact with other fish, initial encounter | ✓ |
| W56.59XD | Other contact with other fish, subsequent encounter | ✓ |
| W56.59XD | Other contact with other fish, subsequent encounter | ✓ |
| W56.59XS | Other contact with other fish, sequela | ✓ |
| W56.59XS | Other contact with other fish, sequela | ✓ |
| W56.81 | Bitten by other nonvenomous marine animals | — |
| W56.81 | Bitten by other nonvenomous marine animals | — |
| W56.81XA | Bitten by other nonvenomous marine animals, initial encounter | ✓ |
| W56.81XA | Bitten by other nonvenomous marine animals, initial encounter | ✓ |
| W56.81XD | Bitten by other nonvenomous marine animals, subsequent encounter | ✓ |
| W56.81XD | Bitten by other nonvenomous marine animals, subsequent encounter | ✓ |
| W56.81XS | Bitten by other nonvenomous marine animals, sequela | ✓ |
| W56.81XS | Bitten by other nonvenomous marine animals, sequela | ✓ |
| W56.82 | Struck by other nonvenomous marine animals | — |
| W56.82 | Struck by other nonvenomous marine animals | — |
| W56.82XA | Struck by other nonvenomous marine animals, initial encounter | ✓ |
| W56.82XA | Struck by other nonvenomous marine animals, initial encounter | ✓ |
| W56.82XD | Struck by other nonvenomous marine animals, subsequent encounter | ✓ |
| W56.82XD | Struck by other nonvenomous marine animals, subsequent encounter | ✓ |
| W56.82XS | Struck by other nonvenomous marine animals, sequela | ✓ |
| W56.82XS | Struck by other nonvenomous marine animals, sequela | ✓ |
| W56.89 | Other contact with other nonvenomous marine animals | — |
| W56.89 | Other contact with other nonvenomous marine animals | — |
| W56.89XA | Other contact with other nonvenomous marine animals, initial encounter | ✓ |
| W56.89XA | Other contact with other nonvenomous marine animals, initial encounter | ✓ |
| W56.89XD | Other contact with other nonvenomous marine animals, subsequent encounter | ✓ |
| W56.89XD | Other contact with other nonvenomous marine animals, subsequent encounter | ✓ |
| W56.89XS | Other contact with other nonvenomous marine animals, sequela | ✓ |
| W56.89XS | Other contact with other nonvenomous marine animals, sequela | ✓ |
Frequently asked questions
What is ICD-10-CM code W56?
W56 is an ICD-10-CM category covering Contact with nonvenomous marine animal. It contains 182 more specific diagnosis codes, 126 of which are billable.
Is W56 a billable code?
No — W56 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example W56.0 — Contact with dolphin). 126 of the 182 codes under W56 are billable.
What codes fall under W56?
W56 includes W56.0, W56.0, W56.01, W56.01, W56.1, plus 177 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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