C51.8 — Malignant neoplasm of overlapping sites of vulva
Is C51.8 billable?
Yes — C51.8 is billable for FY2027. C51.8 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. C51.8 may be submitted for encounters from October 1, 2026 through September 30, 2027.
C51.8 at a glance
| Code | C51.8 |
|---|---|
| Description | Malignant neoplasm of overlapping sites of vulva |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does C51.8 group to?
C51.8 sits in MDC 13 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.
- 731Uterine and Adnexa Procedures for Malignancy with MCCsurgical
- 732Uterine and Adnexa Procedures for Malignancy with CCsurgical
- 733Uterine and Adnexa Procedures for Malignancy without CC/MCCsurgical
How is C51.8 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to C51.8. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Melanoma › skin › vulva › overlapping sites (malignant)
Excludes1 — never code together — inherited from C51
The conditions below can never be reported together with C51.8 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- carcinoma in situ of vulva (D07.1)
How long has C51.8 existed?
C51.8 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.