K21.0
Header — not billableGastro-esophageal reflux disease with esophagitis
The ICD-10 code for gastro-esophageal reflux disease with esophagitis is K21.0.
K21.0 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 2 more specific codes below.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- K21.9Gastro-esophageal reflux disease without esophagitis
- K21.0Gastro-esophageal reflux disease with esophagitisnon-billable header
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- 53011