K91.31 — Postprocedural partial intestinal obstruction
Is K91.31 billable?
Yes — K91.31 is billable for FY2027. K91.31 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. K91.31 may be submitted for encounters from October 1, 2026 through September 30, 2027.
K91.31 at a glance
| Code | K91.31 |
|---|---|
| Description | Postprocedural partial intestinal obstruction |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does K91.31 group to?
K91.31 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.
- 388Gastrointestinal Obstruction with MCCmedical
- 389Gastrointestinal Obstruction with CCmedical
- 390Gastrointestinal Obstruction without CC/MCCmedical
As a secondary diagnosis, K91.31 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
How is K91.31 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to K91.31. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Obstruction, obstructed, obstructive › intestine › postoperative › incomplete
- Obstruction, obstructed, obstructive › intestine › postoperative › partial
Inclusion terms
Alternative wording in documentation that is classified to K91.31.
- Postprocedural incomplete intestinal obstruction
Excludes2 — not included here — inherited from Chapter 11
The conditions below are not part of K91.31, but a patient may have both at the same time. When documentation supports it, K91.31 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 K91.31, but a patient may have both at the same time. When documentation supports it, K91.31 and the excluded code may both be reported.
How long has K91.31 existed?
K91.31 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.