ICD-10-CM 2027
ICD-10 code for duodenum angiodysplasia
From the official ICD-10-CM alphabetic index entry “Angiodysplasia (cecum) (colon) › duodenum (and stomach)”. Page updated September 29, 2026.
About coding duodenum angiodysplasia
The ICD-10-CM code for duodenum angiodysplasia is K31.819 (Angiodysplasia of stomach and duodenum without bleeding). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on K31.819.
Within K31.81, choose K31.819 (without bleeding) only when documentation doesn't support a more specific option: with bleeding (K31.811).
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 duodenum angiodysplasia codes (official index)
- with bleeding K31.811 — Angiodysplasia of stomach and duodenum with bleeding
Common questions about duodenum angiodysplasia ICD-10 codes
What is the ICD-10 code for duodenum angiodysplasia?
- K31.819 — Angiodysplasia of stomach and duodenum without bleeding. More specific codes apply when the documentation supports them: K31.811.
Is K31.819 billable?
- Yes. K31.819 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can K31.819 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict K31.819 as a principal diagnosis.
Is K31.819 a CC or MCC?
- No. K31.819 is neither a CC nor an MCC under MS-DRG v44.0.