C43.12 — Malignant melanoma of left eyelid, including canthus
Is C43.12 billable?
No — C43.12 is a non-billable header code. C43.12 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 2 billable codes beneath C43.12.
C43.12 at a glance
| Code | C43.12 |
|---|---|
| Description | Malignant melanoma of left eyelid, including canthus |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
How is C43.12 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under C43.1, the nearest indexed parent of C43.12. Use them to find the family, then select the specific code.
- Melanoma › skin › canthus (malignant)
- Melanoma › skin › eyelid (malignant)
- Melanoma › skin › palpebra (malignant)
Excludes1 — never code together — inherited from C43
The conditions below can never be reported together with C43.12 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- melanoma in situ (D03.-)
Excludes2 — not included here — inherited from C43
The conditions below are not part of C43.12, but a patient may have both at the same time. When documentation supports it, C43.12 and the excluded code may both be reported.
What codes fall under C43.12? (2)
How long has C43.12 existed?
C43.12 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
- FY2019: C43.12 stopped being billable
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.