ICD-10-CM 2027
ICD-10 code for Angiodysplasia
From the official ICD-10-CM alphabetic index entry “Angiodysplasia (cecum) (colon)”. Page updated September 29, 2026.
About coding Angiodysplasia
The ICD-10-CM code for Angiodysplasia is K55.20 (Angiodysplasia of colon without hemorrhage). The official index lists 5 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on K55.20.
Within K55.2, choose K55.20 (without hemorrhage) only when documentation doesn't support a more specific option: with hemorrhage (K55.21).
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 393 (Other Digestive System Diagnoses with MCC, relative weight 1.5881), DRG 394 (Other Digestive System Diagnoses with CC, relative weight 0.9228) and DRG 395 (Other Digestive System Diagnoses without CC/MCC, relative weight 0.6382), 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 Angiodysplasia codes (official index)
- with bleeding K55.21 — Angiodysplasia of colon with hemorrhage
- duodenum (and stomach) K31.819 — Angiodysplasia of stomach and duodenum without bleeding
- with bleeding K31.811 — Angiodysplasia of stomach and duodenum with bleeding
- stomach (and duodenum) K31.819 — Angiodysplasia of stomach and duodenum without bleeding
- with bleeding K31.811 — Angiodysplasia of stomach and duodenum with bleeding
Common questions about Angiodysplasia ICD-10 codes
What is the ICD-10 code for Angiodysplasia?
- K55.20 — Angiodysplasia of colon without hemorrhage. More specific codes apply when the documentation supports them: K55.21, K31.819, K31.811, K31.819 and others below.
What is the ICD-10 code for duodenum angiodysplasia?
- K31.819 — Angiodysplasia of stomach and duodenum without bleeding.
What is the ICD-10 code for stomach angiodysplasia?
- K31.819 — Angiodysplasia of stomach and duodenum without bleeding.
Is K55.20 billable?
- Yes. K55.20 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can K55.20 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict K55.20 as a principal diagnosis.
Is K55.20 a CC or MCC?
- No. K55.20 is neither a CC nor an MCC under MS-DRG v44.0.