C23 — Malignant neoplasm of gallbladder
Is C23 billable?
Yes — C23 is billable for FY2027. C23 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. C23 may be submitted for encounters from October 1, 2026 through September 30, 2027.
C23 at a glance
| Code | C23 |
|---|---|
| Description | Malignant neoplasm of gallbladder |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does C23 group to?
C23 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.
- 435Malignancy of Hepatobiliary System or Pancreas with MCCmedical
- 436Malignancy of Hepatobiliary System or Pancreas with CCmedical
- 437Malignancy of Hepatobiliary System or Pancreas without CC/MCCmedical
As a secondary diagnosis, C23 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
Excludes1 — never code together — inherited from C15-C26
The conditions below can never be reported together with C23 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- Kaposi's sarcoma of gastrointestinal sites (C46.4)
Excludes2 — not included here — inherited from C15-C26
The conditions below are not part of C23, but a patient may have both at the same time. When documentation supports it, C23 and the excluded code may both be reported.
- gastrointestinal stromal tumors (C49.A-)
How long has C23 existed?
C23 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.