K91.858 — Other complications of intestinal pouch
Is K91.858 billable?
Yes — K91.858 is billable for FY2027. K91.858 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. K91.858 may be submitted for encounters from October 1, 2026 through September 30, 2027.
K91.858 at a glance
| Code | K91.858 |
|---|---|
| Description | Other complications of intestinal pouch |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does K91.858 group to?
K91.858 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, K91.858 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
How is K91.858 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to K91.858. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Complication › intestinal pouch NEC (s) (from) (of)
Excludes2 — not included here — inherited from Chapter 11
The conditions below are not part of K91.858, but a patient may have both at the same time. When documentation supports it, K91.858 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 K91
The conditions below are not part of K91.858, but a patient may have both at the same time. When documentation supports it, K91.858 and the excluded code may both be reported.
How long has K91.858 existed?
K91.858 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.