K31.81 vs K55.031
K31.81 (Angiodysplasia of stomach and duodenum) compared with K55.031 (Focal (segmental) acute (reversible) ischemia of large intestine), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Can these codes be reported together?
Yes, when both are documented. K55.031 carries an Excludes2 note covering K31.81: “angioectasia (angiodysplasia) duodenum (K31.81-)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| K31.81Angiodysplasia of stomach and duodenum | K55.031Focal (segmental) acute (reversible) ischemia of large intestine | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | K00-K95 — Diseases of the Digestive System (K00-K95) | K00-K95 — Diseases of the Digestive System (K00-K95) |
| Definition | Angiodysplasia of stomach and duodenum is a non-billable ICD-10-CM category code (K31.81). | Focal (segmental) acute (reversible) ischemia of large intestine is a billable ICD-10-CM diagnosis code (K55.031). |
| Includes | functional disorders of stomach | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources