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	—
W56.01	Bitten by dolphin	—
W56.1	Contact with sea lion	—
W56.01XA	Bitten by dolphin, initial encounter	✓
W56.01XD	Bitten by dolphin, subsequent encounter	✓
W56.01XS	Bitten by dolphin, sequela	✓
W56.02	Struck by dolphin	—
W56.2	Contact with orca	—
W56.02XA	Struck by dolphin, initial encounter	✓
W56.02XD	Struck by dolphin, subsequent encounter	✓
W56.02XS	Struck by dolphin, sequela	✓
W56.3	Contact with other marine mammals	—
W56.4	Contact with shark	—
W56.5	Contact with other fish	—
W56.8	Contact with other nonvenomous marine animals	—
W56.09	Other contact with dolphin	—
W56.09XA	Other contact with dolphin, initial encounter	✓
W56.09XD	Other contact with dolphin, subsequent encounter	✓
W56.09XS	Other contact with dolphin, sequela	✓
W56.11	Bitten by sea lion	—
W56.11XA	Bitten by sea lion, initial encounter	✓
W56.11XD	Bitten by sea lion, subsequent encounter	✓
W56.11XS	Bitten by sea lion, sequela	✓
W56.12	Struck by sea lion	—
W56.12XA	Struck by sea lion, initial encounter	✓
W56.12XD	Struck by sea lion, subsequent encounter	✓
W56.12XS	Struck by sea lion, sequela	✓
W56.19	Other contact with sea lion	—
W56.19XA	Other contact with sea lion, initial encounter	✓
W56.19XD	Other contact with sea lion, subsequent encounter	✓
W56.19XS	Other contact with sea lion, sequela	✓
W56.21	Bitten by orca	—
W56.21XA	Bitten by orca, initial encounter	✓
W56.21XD	Bitten by orca, subsequent encounter	✓
W56.21XS	Bitten by orca, sequela	✓
W56.22	Struck by orca	—
W56.22XA	Struck by orca, initial encounter	✓
W56.22XD	Struck by orca, subsequent encounter	✓
W56.22XS	Struck by orca, sequela	✓
W56.29	Other contact with orca	—
W56.29XA	Other contact with orca, initial encounter	✓
W56.29XD	Other contact with orca, subsequent encounter	✓
W56.29XS	Other contact with orca, sequela	✓
W56.31	Bitten by other marine mammals	—
W56.31XA	Bitten by other marine mammals, initial encounter	✓
W56.31XD	Bitten by other marine mammals, subsequent encounter	✓
W56.31XS	Bitten by other marine mammals, sequela	✓
W56.32	Struck by other marine mammals	—
W56.32XA	Struck by other marine mammals, initial encounter	✓
W56.32XD	Struck by other marine mammals, subsequent encounter	✓
W56.32XS	Struck by other marine mammals, sequela	✓
W56.39	Other contact with other marine mammals	—
W56.39XA	Other contact with other marine mammals, initial encounter	✓
W56.39XD	Other contact with other marine mammals, subsequent encounter	✓
W56.39XS	Other contact with other marine mammals, sequela	✓
W56.41	Bitten by shark	—
W56.41XA	Bitten by shark, initial encounter	✓
W56.41XD	Bitten by shark, subsequent encounter	✓
W56.41XS	Bitten by shark, sequela	✓
W56.42	Struck by shark	—
W56.42XA	Struck by shark, initial encounter	✓
W56.42XD	Struck by shark, subsequent encounter	✓
W56.42XS	Struck by shark, sequela	✓
W56.49	Other contact with shark	—
W56.49XA	Other contact with shark, initial encounter	✓
W56.49XD	Other contact with shark, subsequent encounter	✓
W56.49XS	Other contact with shark, sequela	✓
W56.51	Bitten by other fish	—
W56.51XA	Bitten by other fish, initial encounter	✓
W56.51XD	Bitten by other fish, subsequent encounter	✓
W56.51XS	Bitten by other fish, sequela	✓
W56.52	Struck by other fish	—
W56.52XA	Struck by other fish, initial encounter	✓
W56.52XD	Struck by other fish, subsequent encounter	✓
W56.52XS	Struck by other fish, sequela	✓
W56.59	Other contact with other fish	—
W56.59XA	Other contact with other fish, initial encounter	✓
W56.59XD	Other contact with other fish, subsequent encounter	✓
W56.59XS	Other contact with other fish, sequela	✓
W56.81	Bitten by other nonvenomous marine animals	—
W56.81XA	Bitten by other nonvenomous marine animals, initial encounter	✓
W56.81XD	Bitten by other nonvenomous marine animals, subsequent encounter	✓
W56.81XS	Bitten by other nonvenomous marine animals, sequela	✓
W56.82	Struck by other nonvenomous marine animals	—
W56.82XA	Struck by other nonvenomous marine animals, initial encounter	✓
W56.82XD	Struck by other nonvenomous marine animals, subsequent encounter	✓
W56.82XS	Struck by other nonvenomous marine animals, sequela	✓
W56.89	Other contact with other nonvenomous marine animals	—
W56.89XA	Other contact with other nonvenomous marine animals, initial encounter	✓
W56.89XD	Other contact with other nonvenomous marine animals, subsequent encounter	✓
W56.89XS	Other contact with other nonvenomous marine animals, sequela	✓

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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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