C48.1 — Malignant neoplasm of specified parts of peritoneum
Is C48.1 billable?
Yes — C48.1 is billable for FY2027. C48.1 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. C48.1 may be submitted for encounters from October 1, 2026 through September 30, 2027.
C48.1 at a glance
| Code | C48.1 |
|---|---|
| Description | Malignant neoplasm of specified parts of peritoneum |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does C48.1 group to?
C48.1 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.
- 374Digestive Malignancy with MCCmedical
- 375Digestive Malignancy with CCmedical
- 376Digestive Malignancy without CC/MCCmedical
As a secondary diagnosis, C48.1 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
Inclusion terms
Alternative wording in documentation that is classified to C48.1.
- Malignant neoplasm of cul-de-sac
- Malignant neoplasm of mesentery
- Malignant neoplasm of mesocolon
- Malignant neoplasm of omentum
- Malignant neoplasm of parietal peritoneum
- Malignant neoplasm of pelvic peritoneum
Excludes1 — never code together — inherited from C48
The conditions below can never be reported together with C48.1 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
How long has C48.1 existed?
C48.1 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.