C4A.11 — Merkel cell carcinoma of right eyelid, including canthus
Not billable
Is C4A.11 billable?
No — C4A.11 is a non-billable header code. C4A.11 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 C4A.11.
C4A.11 at a glance
| Code | C4A.11 |
|---|---|
| Description | Merkel cell carcinoma of right eyelid, including canthus |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
How is C4A.11 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under C4A.1, the nearest indexed parent of C4A.11. Use them to find the family, then select the specific code.
- Carcinoma › Merkel cell › canthus (malignant)
- Carcinoma › Merkel cell › eyelid, including canthus (malignant)
What codes fall under C4A.11? (2)
How long has C4A.11 existed?
C4A.11 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
- FY2019: C4A.11 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.