K21.01: Gastro-esophageal reflux disease with esophagitis, with bleeding
K21.01 is the billable ICD-10-CM diagnosis code for Gastro-esophageal reflux disease with esophagitis, with bleeding. 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 K21.01?
K21.01 is the ICD-10-CM diagnosis code for Gastro-esophageal reflux disease with esophagitis, with bleeding. It belongs to category K21 (Gastro-esophageal reflux disease).
Is K21.01 a billable code?
Yes. K21.01 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 K21.01 belong to?
K21.01 is part of ICD-10-CM category K21 — Gastro-esophageal reflux disease, which has 6 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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