ICD-10-CM 2027
ICD-10 code for stomach polyp
From the official ICD-10-CM alphabetic index entry “Polyp, polypus › stomach”. Page updated September 29, 2026.
About coding stomach polyp
The ICD-10-CM code for stomach polyp is K31.7 (Polyp of stomach and duodenum). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on K31.7.
Within K31 (other diseases of stomach and duodenum), K31.7 is specifically for polyp of stomach and duodenum. Related codes cover acute dilatation of stomach (K31.0), adult hypertrophic pyloric stenosis (K31.1), Hourglass stricture and stenosis of stomach (K31.2), Pylorospasm, not elsewhere classified (K31.3), gastric diverticulum (K31.4), obstruction of duodenum (K31.5), fistula of stomach and duodenum (K31.6), other specified diseases of stomach and duodenum (K31.8) and 3 more.
Don't report K31.7 together with the conditions in its Excludes1 note: adenomatous polyp of stomach (D13.1).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific stomach polyp codes (official index)
- adenomatous D13.1 — Benign neoplasm of stomach
Don't confuse with (Excludes1 for K31.7)
- adenomatous polyp of stomach (D13.1)
Common questions about stomach polyp ICD-10 codes
What is the ICD-10 code for stomach polyp?
- K31.7 — Polyp of stomach and duodenum. More specific codes apply when the documentation supports them: D13.1.
What is the ICD-10 code for adenomatous stomach polyp?
- D13.1 — Benign neoplasm of stomach.
Is K31.7 billable?
- Yes. K31.7 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can K31.7 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict K31.7 as a principal diagnosis.
Is K31.7 a CC or MCC?
- No. K31.7 is neither a CC nor an MCC under MS-DRG v44.0.