ICD-10-CM 2027
ICD-10 code for phrenic ampulla
From the official ICD-10-CM alphabetic index entry “Ampulla › phrenic”. Page updated September 29, 2026.
About coding phrenic ampulla
The ICD-10-CM code for phrenic ampulla is K22.89 (Other specified disease of esophagus).
Within K22.8, choose K22.89 (Other specified disease of esophagus) only when documentation doesn't support a more specific option: esophageal polyp (K22.81) and esophagogastric junction polyp (K22.82).
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.
Common questions about phrenic ampulla ICD-10 codes
What is the ICD-10 code for phrenic ampulla?
- K22.89 — Other specified disease of esophagus.
Is K22.89 billable?
- Yes. K22.89 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can K22.89 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict K22.89 as a principal diagnosis.
Is K22.89 a CC or MCC?
- No. K22.89 is neither a CC nor an MCC under MS-DRG v44.0.