ICD-10 code W56 is for contact with nonvenomous marine animals. It includes W56.0, contact with dolphin, and subcodes about getting bitten in the initial and subsequent encounters. It also includes W56.1, contact with sea lion, and W56.2, contact with orca, and subcodes for both. The closest code for barracuda is probably W56.5, contact with other fish, and its subcodes.
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Cite this: Medscape Staff. Trivia Quiz: Weird ICD-10 Codes - Medscape - Sep 30, 2022.