ICD-10-CM 2027
ICD-10 code for Cascade stomach
From the official ICD-10-CM alphabetic index entry “Cascade stomach”. Page updated September 29, 2026.
About coding Cascade stomach
The ICD-10-CM code for Cascade stomach is K31.2 (Hourglass stricture and stenosis of stomach).
Within K31 (other diseases of stomach and duodenum), K31.2 is specifically for Hourglass stricture and stenosis of stomach. Related codes cover acute dilatation of stomach (K31.0), adult hypertrophic pyloric stenosis (K31.1), Pylorospasm, not elsewhere classified (K31.3), gastric diverticulum (K31.4), obstruction of duodenum (K31.5), fistula of stomach and duodenum (K31.6), polyp of stomach and duodenum (K31.7), other specified diseases of stomach and duodenum (K31.8) and 3 more.
Don't report K31.2 together with the conditions in its Excludes1 note: congenital hourglass stomach (Q40.2) and hourglass contraction of stomach (K31.89).
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 K31.2)
Common questions about Cascade stomach ICD-10 codes
What is the ICD-10 code for Cascade stomach?
- K31.2 — Hourglass stricture and stenosis of stomach.
Is K31.2 billable?
- Yes. K31.2 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can K31.2 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict K31.2 as a principal diagnosis.
Is K31.2 a CC or MCC?
- No. K31.2 is neither a CC nor an MCC under MS-DRG v44.0.