ICD-10-CM 2027
ICD-10 code for Zenker's diverticulum
From the official ICD-10-CM alphabetic index entry “Zenker's diverticulum (esophagus)”. Page updated September 29, 2026.
About coding Zenker's diverticulum
The ICD-10-CM code for Zenker's diverticulum is K22.5 (Diverticulum of esophagus, acquired).
Within K22 (other diseases of esophagus), K22.5 is specifically for diverticulum of esophagus, acquired. Related codes cover Achalasia of cardia (K22.0), ulcer of esophagus (K22.1), esophageal obstruction (K22.2), perforation of esophagus (K22.3), dyskinesia of esophagus (K22.4), Gastro-esophageal laceration-hemorrhage syndrome (K22.6), Barrett's esophagus (K22.7), other specified diseases of esophagus (K22.8) and 1 more.
Don't report K22.5 together with the conditions in its Excludes1 note: diverticulum of esophagus (congenital) (Q39.6).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Don't confuse with (Excludes1 for K22.5)
- diverticulum of esophagus (congenital) (Q39.6)
Common questions about Zenker's diverticulum ICD-10 codes
What is the ICD-10 code for Zenker's diverticulum?
- K22.5 — Diverticulum of esophagus, acquired.
Is K22.5 billable?
- Yes. K22.5 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can K22.5 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict K22.5 as a principal diagnosis.
Is K22.5 a CC or MCC?
- No. K22.5 is neither a CC nor an MCC under MS-DRG v44.0.