A21.3: Gastrointestinal tularemia
A21.3 is the billable ICD-10-CM diagnosis code for Gastrointestinal tularemia. It is a fully specified code, so it can be reported on a claim (subject to clinical documentation and your payer's rules).
Frequently asked questions
What is ICD-10-CM code A21.3?
A21.3 is the ICD-10-CM diagnosis code for Gastrointestinal tularemia. It belongs to category A21 (Tularemia).
Is A21.3 a billable code?
Yes. A21.3 is a billable, fully specified ICD-10-CM code, so it can be used on a claim (subject to documentation and payer rules).
What category does A21.3 belong to?
A21.3 is part of ICD-10-CM category A21 — Tularemia, which has 14 billable codes.
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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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