K55 — Vascular disorders of intestine
Is K55 billable?
No — K55 is a non-billable header code. K55 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 27 billable codes beneath K55.
Billable codes under this header
- K55.1Chronic vascular disorders of intestine
- K55.8Other vascular disorders of intestine
- K55.9Vascular disorder of intestine, unspecified
- K55.20Angiodysplasia of colon without hemorrhage
- K55.21Angiodysplasia of colon with hemorrhage
- K55.30Necrotizing enterocolitis, unspecified
- K55.31Stage 1 necrotizing enterocolitis
- K55.32Stage 2 necrotizing enterocolitis
- K55.33Stage 3 necrotizing enterocolitis
- K55.011Focal (segmental) acute (reversible) ischemia of small intestine
- K55.012Diffuse acute (reversible) ischemia of small intestine
- K55.019Acute (reversible) ischemia of small intestine, extent unspecified
- K55.021Focal (segmental) acute infarction of small intestine
- K55.022Diffuse acute infarction of small intestine
- K55.029Acute infarction of small intestine, extent unspecified
- K55.031Focal (segmental) acute (reversible) ischemia of large intestine
- K55.032Diffuse acute (reversible) ischemia of large intestine
- K55.039Acute (reversible) ischemia of large intestine, extent unspecified
- K55.041Focal (segmental) acute infarction of large intestine
- K55.042Diffuse acute infarction of large intestine
- K55.049Acute infarction of large intestine, extent unspecified
- K55.051Focal (segmental) acute (reversible) ischemia of intestine, part unspecified
- K55.052Diffuse acute (reversible) ischemia of intestine, part unspecified
- K55.059Acute (reversible) ischemia of intestine, part and extent unspecified
- K55.061Focal (segmental) acute infarction of intestine, part unspecified
- K55.062Diffuse acute infarction of intestine, part unspecified
- K55.069Acute infarction of intestine, part and extent unspecified
K55 at a glance
| Code | K55 |
|---|---|
| Description | Vascular disorders of intestine |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes1 — never code together
The conditions below can never be reported together with K55 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- necrotizing enterocolitis of newborn (P77.-)
Excludes2 — not included here
The conditions below are not part of K55, but a patient may have both at the same time. When documentation supports it, K55 and the excluded code may both be reported.
- angioectasia (angiodysplasia) duodenum (K31.81-)
Excludes2 — not included here — inherited from Chapter 11
The conditions below are not part of K55, but a patient may have both at the same time. When documentation supports it, K55 and the excluded code may both be reported.
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
What codes fall under K55? (6)
How long has K55 existed?
K55 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.