ICD-10 Code for Esophagitis
Also indexed as (acute) (alkaline) (chemical) (chronic) (infectional) (necrotic) (peptic) (postoperative) (without bleeding)
The ICD-10-CM code for esophagitis is K20.90 — Esophagitis, unspecified without bleeding. This is the code the Alphabetic Index gives for esophagitis with no further qualifier, valid for FY2027 (October 1, 2026 – September 30, 2027).
K20.90 is billable but unspecified. If the documentation names a type, site or cause, one of the more specific codes below is likely expected.
Which esophagitis code should you use?
The Alphabetic Index lists 11 codes under Esophagitis. Which one applies depends on the qualifier documented in the record — the type, site, cause, or associated condition. Find the qualifier below, then verify the code in the Tabular List before using it.
By type
| with bleeding | K20.91 | Esophagitis, unspecified with bleeding | |
| candidal | B37.81 | Candidal esophagitis | |
| due to gastrointestinal reflux disease | K21.00 | Gastro-esophageal reflux disease with esophagitis, without bleeding | |
| eosinophilic | K20.0 | Eosinophilic esophagitis | |
| reflux | K21.00 | Gastro-esophageal reflux disease with esophagitis, without bleeding | |
| specified NEC | K20.80 | Other esophagitis without bleeding | |
| tuberculous | A18.83 | Tuberculosis of digestive tract organs, not elsewhere classified | |
| ulcerative | K22.10 | Ulcer of esophagus without bleeding |
Esophagitis due to gastrointestinal reflux disease
| with bleeding | K21.01 | Gastro-esophageal reflux disease with esophagitis, with bleeding |
Esophagitis reflux
| with bleeding | K21.01 | Gastro-esophageal reflux disease with esophagitis, with bleeding |
Esophagitis specified NEC
| with bleeding | K20.81 | Other esophagitis with bleeding |
Esophagitis ulcerative
| with bleeding | K22.11 | Ulcer of esophagus with bleeding |
Index terms and codes are reproduced from the official ICD-10-CM FY2027 release. The Alphabetic Index is a finding aid — a code must always be verified in the Tabular List before it is reported. Data sources