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ICD-10-CM category

K21: Gastro-esophageal reflux disease

4 subcodes · 3 billable · Look up any code with the ICD-10 search

Codes under K21 (Gastro-esophageal reflux disease). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.

CodeDescriptionBillable
K21.0Gastro-esophageal reflux disease with esophagitis—
K21.00Gastro-esophageal reflux disease with esophagitis, without bleeding✓
K21.01Gastro-esophageal reflux disease with esophagitis, with bleeding✓
K21.9Gastro-esophageal reflux disease without esophagitis✓

More free billing tools: all ICD-10 categories · ICD-10 search · denial codes · Medicare fees

Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.

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