ICD-10-CM
ICD-10 code for Melanoma: C43.9
The ICD-10-CM index points "Melanoma" to C43 (Malignant melanoma of skin), a header that is not billable. When nothing more specific is documented, the billable code is C43.9, Malignant melanoma of skin, unspecified.
Source: CDC ICD-10-CM FY2027 Alphabetic Index file dated June 16, 2026. Publisher page
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Index subterms
A header groups codes and is not billed. A billable code is one you can report.
More specific codes in C43
A header groups codes and is not billed. A billable code is one you can report.
- C43Malignant melanoma of skinHeader
- C43.0Malignant melanoma of lipBillable
- C43.1Malignant melanoma of eyelid, including canthusHeader
- C43.10Malignant melanoma of unspecified eyelid, including canthusBillable
- C43.11Malignant melanoma of right eyelid, including canthusHeader
- C43.111Malignant melanoma of right upper eyelid, including canthusBillable
- C43.112Malignant melanoma of right lower eyelid, including canthusBillable
- C43.12Malignant melanoma of left eyelid, including canthusHeader
- C43.121Malignant melanoma of left upper eyelid, including canthusBillable
- C43.122Malignant melanoma of left lower eyelid, including canthusBillable
- C43.2Malignant melanoma of ear and external auricular canalHeader
- C43.20Malignant melanoma of unspecified ear and external auricular canalBillable
- C43.21Malignant melanoma of right ear and external auricular canalBillable
- C43.22Malignant melanoma of left ear and external auricular canalBillable
- C43.3Malignant melanoma of other and unspecified parts of faceHeader
- C43.30Malignant melanoma of unspecified part of faceBillable
- C43.31Malignant melanoma of noseBillable
- C43.39Malignant melanoma of other parts of faceBillable
- C43.4Malignant melanoma of scalp and neckBillable
- C43.5Malignant melanoma of trunkHeader
- C43.51Malignant melanoma of anal skinBillable
- C43.52Malignant melanoma of skin of breastBillable
- C43.59Malignant melanoma of other part of trunkBillable
- C43.6Malignant melanoma of upper limb, including shoulderHeader
- C43.60Malignant melanoma of unspecified upper limb, including shoulderBillable
- C43.61Malignant melanoma of right upper limb, including shoulderBillable
- C43.62Malignant melanoma of left upper limb, including shoulderBillable
- C43.7Malignant melanoma of lower limb, including hipHeader
- C43.70Malignant melanoma of unspecified lower limb, including hipBillable
- C43.71Malignant melanoma of right lower limb, including hipBillable
- C43.72Malignant melanoma of left lower limb, including hipBillable
- C43.8Malignant melanoma of overlapping sites of skinBillable
- C43.9Malignant melanoma of skin, unspecifiedBillable
Excludes1
Excludes1 means these codes are not reported together.
From C43. A note on a category applies to every code under it.
Excludes2
Excludes2 means the other condition can be reported with this one when both are documented.
From C43. A note on a category applies to every code under it.
- C51-C52, C60.-, C63.-Malignant melanoma of skin of genital organs
- C4A.-Merkel cell carcinoma
- sites other than skin-code to malignant neoplasm of the site
Related conditions
Related pages
- C43.9 code detailsNotes, nearby codes, CMS-HCC group
- Category C43Every code under it
- Chapter 2Neoplasms
- ICD-10 codes by conditionA to Z
- Check a list of ICD-10 codes
- Denial code CO-11Diagnosis does not support the procedure
- Denial code CO-146Diagnosis invalid for the date of service
- HCPCS Level II code lookup
Questions
What is the ICD-10 code for Melanoma?
The ICD-10-CM index points "Melanoma" to C43 (Malignant melanoma of skin), a header that is not billable. When nothing more specific is documented, the billable code is C43.9, Malignant melanoma of skin, unspecified.
Is C43.9 billable?
Yes. C43.9 is a billable code in the FY2027 ICD-10-CM file. Use a more specific code when the record documents one.
What documentation notes apply to C43.9?
The CDC tabular list gives 1 Excludes1 note (not coded together), 3 Excludes2 notes (may be coded together when both are documented) for C43.9 and the categories above it. They are listed on this page.
What chapter is C43.9 in?
Chapter 2. Neoplasms.
When do ICD-10-CM codes change?
Every October 1, with the new fiscal year file. Some years add April 1 updates. This page uses the FY2027 file, effective October 1, 2026.