C43.1 — Malignant melanoma of eyelid, including canthus

Not billable

Is C43.1 billable?

No — C43.1 is a non-billable header code. C43.1 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 5 billable codes beneath C43.1.

Billable codes under this header

C43.1 at a glance

Code	C43.1
Description	Malignant melanoma of eyelid, including canthus
Billable	No — header code
Code set	ICD-10-CM FY2027
Valid for encounters	October 1, 2026 – September 30, 2027

How is C43.1 listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to C43.1. They show the wording a clinician may have documented, which often differs from the Tabular description.

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 C43.1 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

melanoma in situ (D03.-)

Excludes2 — not included here — inherited from C43

The conditions below are not part of C43.1, but a patient may have both at the same time. When documentation supports it, C43.1 and the excluded code may both be reported.

malignant melanoma of skin of genital organs (C51-C52, C60.-, C63.-)
Merkel cell carcinoma (C4A.-)
sites other than skin-code to malignant neoplasm of the site

What codes fall under C43.1? (3)

How long has C43.1 existed?

C43.1 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.

Which conditions are coded to C43.1?

ICD-10 code for Melanoma