ICD-10-CM › K00-K95 › K20-K31 › K codes › K21
K21
Gastro-esophageal reflux disease
Not billableICD-10-CM diagnosis code.
This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.
Submit one of these 2 more specific codes instead:
What has happened to this code
Every change the publisher made, from 2012 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.
- FY2012 Added to the draft code set draft Gastro-esophageal reflux disease
Official coding rules
Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.
This code
Excludes1 - never coded here
- newborn esophageal reflux (P78.83)
Inherited from the K20-K31 section Diseases of esophagus, stomach and duodenum (K20-K31)
Excludes2 - not included here
- hiatus hernia (K44.-)