K85.90 — Acute pancreatitis without necrosis or infection, unspecified
Is K85.90 billable?
Yes, but K85.90 is an unspecified code. K85.90 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, K85.90 is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting K85.90 — the more specific alternatives are listed below.
K85.90 at a glance
| Code | K85.90 |
|---|---|
| Description | Acute pancreatitis without necrosis or infection, unspecified |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does K85.90 group to?
K85.90 sits in MDC 07 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.
- 438Disorders of Pancreas Except Malignancy with MCCmedical
- 439Disorders of Pancreas Except Malignancy with CCmedical
- 440Disorders of Pancreas Except Malignancy without CC/MCCmedical
As a secondary diagnosis, K85.90 is a major complication or comorbidity (MCC), which can move a stay into a higher-paying DRG.
How is K85.90 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to K85.90. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Pancreatitis (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative)
- Pancreatitis › acute (annular) (apoplectic) (calcareous) (edematous) (hemorrhagic) (malignant) (subacute) (suppurative)
Excludes2 — not included here — inherited from Chapter 11
The conditions below are not part of K85.90, but a patient may have both at the same time. When documentation supports it, K85.90 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)
How long has K85.90 existed?
K85.90 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.