ICD-10-CM · Chapter 11 · K00-K95
K55 Vascular disorders of intestine
Excludes 1 (cannot be coded together)
- necrotizing enterocolitis of newborn (P77.-)
Excludes 2 (not included here)
- angioectasia (angiodysplasia) duodenum (K31.81-)
Subcodes
Subcodes are listed below for reference. Detail pages are not available for chapters 11–22.
| Code | Description | Billable |
|---|---|---|
| K55..0 | Acute vascular disorders of intestine | No |
| K55..01 | Acute (reversible) ischemia of small intestine | No |
| K55..011 | Focal (segmental) acute (reversible) ischemia of small intestine | Yes |
| K55..012 | Diffuse acute (reversible) ischemia of small intestine | Yes |
| K55..019 | Acute (reversible) ischemia of small intestine, extent unspecified | Yes |
| K55..02 | Acute infarction of small intestine | No |
| K55..021 | Focal (segmental) acute infarction of small intestine | Yes |
| K55..022 | Diffuse acute infarction of small intestine | Yes |
| K55..029 | Acute infarction of small intestine, extent unspecified | Yes |
| K55..03 | Acute (reversible) ischemia of large intestine | No |
| K55..031 | Focal (segmental) acute (reversible) ischemia of large intestine | Yes |
| K55..032 | Diffuse acute (reversible) ischemia of large intestine | Yes |
| K55..039 | Acute (reversible) ischemia of large intestine, extent unspecified | Yes |
| K55..04 | Acute infarction of large intestine | No |
| K55..041 | Focal (segmental) acute infarction of large intestine | Yes |
| K55..042 | Diffuse acute infarction of large intestine | Yes |
| K55..049 | Acute infarction of large intestine, extent unspecified | Yes |
| K55..05 | Acute (reversible) ischemia of intestine, part unspecified | No |
| K55..051 | Focal (segmental) acute (reversible) ischemia of intestine, part unspecified | Yes |
| K55..052 | Diffuse acute (reversible) ischemia of intestine, part unspecified | Yes |
| K55..059 | Acute (reversible) ischemia of intestine, part and extent unspecified | Yes |
| K55..06 | Acute infarction of intestine, part unspecified | No |
| K55..061 | Focal (segmental) acute infarction of intestine, part unspecified | Yes |
| K55..062 | Diffuse acute infarction of intestine, part unspecified | Yes |
| K55..069 | Acute infarction of intestine, part and extent unspecified | Yes |
| K55..1 | Chronic vascular disorders of intestine | Yes |
| K55..2 | Angiodysplasia of colon | No |
| K55..20 | Angiodysplasia of colon without hemorrhage | Yes |
| K55..21 | Angiodysplasia of colon with hemorrhage | Yes |
| K55..3 | Necrotizing enterocolitis | No |
| K55..30 | Necrotizing enterocolitis, unspecified | Yes |
| K55..31 | Stage 1 necrotizing enterocolitis | Yes |
| K55..32 | Stage 2 necrotizing enterocolitis | Yes |
| K55..33 | Stage 3 necrotizing enterocolitis | Yes |
| K55..8 | Other vascular disorders of intestine | Yes |
| K55..9 | Vascular disorder of intestine, unspecified | Yes |
Last reviewed: September 2026