ICD-10 · PDGM grouping
K55 Vascular disorders of intestine
All 27 codes in the K55 family, with the PDGM clinical group, comorbidity subgroup and primary-position rule CMS assigns, read from the CMS grouper crosswalk v07.2.26 and the CDC FY2027 code file.
Codes in family
27
Can lead a claim
27
Cannot lead a claim
0
What CMS assigns to K55
All 27 codes group to MMTA - Other (17) and MMTA - Gastrointestinal tract and Genitourinary system (10). None of the 27 is assigned a comorbidity subgroup. Every code can lead a claim.
Every code in K55
Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.
| Code | Description | Primary position | Clinical group | Comorbidity subgroup |
|---|---|---|---|---|
| K55.0 Acute vascular disorders of intestine | ||||
| K55.01 Acute (reversible) ischemia of small intestine | ||||
| K55.011 | Focal (segmental) acute (reversible) ischemia of small intestineCMS: Focal (segmental) acute ischemia of small intestine | Can lead a claim | A | None |
| K55.012 | Diffuse acute (reversible) ischemia of small intestine | Can lead a claim | A | None |
| K55.019 | Acute (reversible) ischemia of small intestine, extent unspecifiedCMS: Acute ischemia of small intestine, extent unspecified | Can lead a claim | J | None |
| K55.02 Acute infarction of small intestine | ||||
| K55.021 | Focal (segmental) acute infarction of small intestine | Can lead a claim | A | None |
| K55.022 | Diffuse acute infarction of small intestine | Can lead a claim | A | None |
| K55.029 | Acute infarction of small intestine, extent unspecified | Can lead a claim | A | None |
| K55.03 Acute (reversible) ischemia of large intestine | ||||
| K55.031 | Focal (segmental) acute (reversible) ischemia of large intestineCMS: Focal (segmental) acute ischemia of large intestine | Can lead a claim | J | None |
| K55.032 | Diffuse acute (reversible) ischemia of large intestine | Can lead a claim | A | None |
| K55.039 | Acute (reversible) ischemia of large intestine, extent unspecifiedCMS: Acute ischemia of large intestine, extent unspecified | Can lead a claim | J | None |
| K55.04 Acute infarction of large intestine | ||||
| K55.041 | Focal (segmental) acute infarction of large intestine | Can lead a claim | A | None |
| K55.042 | Diffuse acute infarction of large intestine | Can lead a claim | A | None |
| K55.049 | Acute infarction of large intestine, extent unspecified | Can lead a claim | A | None |
| K55.05 Acute (reversible) ischemia of intestine, part unspecified | ||||
| K55.051 | Focal (segmental) acute (reversible) ischemia of intestine, part unspecifiedCMS: Focal acute ischemia of intestine, part unspecified | Can lead a claim | A | None |
| K55.052 | Diffuse acute (reversible) ischemia of intestine, part unspecifiedCMS: Diffuse acute ischemia of intestine, part unspecified | Can lead a claim | A | None |
| K55.059 | Acute (reversible) ischemia of intestine, part and extent unspecifiedCMS: Acute ischemia of intestine, part and extent unspecified | Can lead a claim | J | None |
| K55.06 Acute infarction of intestine, part unspecified | ||||
| K55.061 | Focal (segmental) acute infarction of intestine, part unspecifiedCMS: Focal acute infarction of intestine, part unspecified | Can lead a claim | A | None |
| K55.062 | Diffuse acute infarction of intestine, part unspecified | Can lead a claim | A | None |
| K55.069 | Acute infarction of intestine, part and extent unspecified | Can lead a claim | J | None |
| K55.1 | Chronic vascular disorders of intestine | Can lead a claim | J | None |
| K55.2 Angiodysplasia of colon | ||||
| K55.20 | Angiodysplasia of colon without hemorrhage | Can lead a claim | J | None |
| K55.21 | Angiodysplasia of colon with hemorrhage | Can lead a claim | J | None |
| K55.3 Necrotizing enterocolitis | ||||
| K55.30 | Necrotizing enterocolitis, unspecified | Can lead a claim | A | None |
| K55.31 | Stage 1 necrotizing enterocolitis | Can lead a claim | A | None |
| K55.32 | Stage 2 necrotizing enterocolitis | Can lead a claim | A | None |
| K55.33 | Stage 3 necrotizing enterocolitis | Can lead a claim | A | None |
| K55.8 | Other vascular disorders of intestine | Can lead a claim | J | None |
| K55.9 | Vascular disorder of intestine, unspecified | Can lead a claim | J | None |
Sources: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01, for the clinical group, comorbidity subgroup, code-first conventions and primary-position flags; CDC NCHS ICD-10-CM FY2027 code descriptions for the family title and code wording. This is the crosswalk Medicare runs a claim through. Grouping also depends on admission source, timing, the OASIS functional items and the rest of the diagnosis list.
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