K82.A1 — Gangrene of gallbladder in cholecystitis
Is K82.A1 billable?
Yes — K82.A1 is billable for FY2027. K82.A1 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. K82.A1 may be submitted for encounters from October 1, 2026 through September 30, 2027.
K82.A1 at a glance
| Code | K82.A1 |
|---|---|
| Description | Gangrene of gallbladder in cholecystitis |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
What Medicare edits apply to K82.A1?
The Medicare Code Editor screens inpatient claims before they are grouped. These edits name K82.A1 directly.
This code describes a manifestation of an underlying disease. The underlying condition must be sequenced before it, so it can never be the principal or first-listed diagnosis.
Which MS-DRGs does K82.A1 group to?
K82.A1 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.
- 444Disorders of the Biliary Tract with MCCmedical
- 445Disorders of the Biliary Tract with CCmedical
- 446Disorders of the Biliary Tract without CC/MCCmedical
How is K82.A1 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to K82.A1. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Cholecystitis › with › gangrene of gallbladder
Excludes1 — never code together — inherited from K82
The conditions below can never be reported together with K82.A1 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Code first — inherited from K82.A
The underlying condition below must be sequenced before K82.A1. K82.A1 describes a manifestation and cannot be the principal or first-listed diagnosis.
Excludes2 — not included here — inherited from Chapter 11
The conditions below are not part of K82.A1, but a patient may have both at the same time. When documentation supports it, K82.A1 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 K82.A1 existed?
K82.A1 first appears in FY2019.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.