ICD-10-CM 2027
ICD-10 code for esophagus disease
From the official ICD-10-CM alphabetic index entry “Disease, diseased › esophagus”. Page updated September 29, 2026.
About coding esophagus disease
The ICD-10-CM code for esophagus disease is K22.9 (Disease of esophagus, unspecified). The official index lists 3 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on K22.9.
Within K22, choose K22.9 (Disease of esophagus, unspecified) only when documentation doesn't support a more specific option: Achalasia of cardia (K22.0), ulcer of esophagus (K22.1), esophageal obstruction (K22.2), perforation of esophagus (K22.3), dyskinesia of esophagus (K22.4), diverticulum of esophagus, acquired (K22.5), Gastro-esophageal laceration-hemorrhage syndrome (K22.6), Barrett's esophagus (K22.7) and 1 more.
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 391 (Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders with MCC, relative weight 1.2392) and DRG 392 (Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders without MCC, relative weight 0.7645), in MDC 06 (Diseases and Disorders of the Digestive System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific esophagus disease codes (official index)
Common questions about esophagus disease ICD-10 codes
What is the ICD-10 code for esophagus disease?
- K22.9 — Disease of esophagus, unspecified. More specific codes apply when the documentation supports them: K22.4, F45.8, K22.89.
What is the ICD-10 code for functional esophagus disease?
- K22.4 — Dyskinesia of esophagus.
What is the ICD-10 code for psychogenic esophagus disease?
- F45.8 — Other somatoform disorders.
Is K22.9 billable?
- Yes. K22.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can K22.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict K22.9 as a principal diagnosis.
Is K22.9 a CC or MCC?
- No. K22.9 is neither a CC nor an MCC under MS-DRG v44.0.