K55.031 — Focal (segmental) acute (reversible) ischemia of large intestine
Is K55.031 billable?
Yes — K55.031 is billable for FY2027. K55.031 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. K55.031 may be submitted for encounters from October 1, 2026 through September 30, 2027.
K55.031 at a glance
| Code | K55.031 |
|---|---|
| Description | Focal (segmental) acute (reversible) ischemia of large intestine |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does K55.031 group to?
K55.031 sits in MDC 06 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 393Other Digestive System Diagnoses with MCCmedical
- 394Other Digestive System Diagnoses with CCmedical
- 395Other Digestive System Diagnoses without CC/MCCmedical
As a secondary diagnosis, K55.031 is a major complication or comorbidity (MCC), which can move a stay into a higher-paying DRG.
How is K55.031 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to K55.031. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Ischemia, ischemic › intestine › acute › large › focal
Excludes1 — never code together — inherited from K55
The conditions below can never be reported together with K55.031 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 — inherited from Chapter 11
The conditions below are not part of K55.031, but a patient may have both at the same time. When documentation supports it, K55.031 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)
Excludes2 — not included here — inherited from K55
The conditions below are not part of K55.031, but a patient may have both at the same time. When documentation supports it, K55.031 and the excluded code may both be reported.
- angioectasia (angiodysplasia) duodenum (K31.81-)
How long has K55.031 existed?
K55.031 first appears in FY2018 (FY2017 is not available, so it may have appeared then).
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.