Melanoma and other malignant neoplasms of skin (C43-C44) ICD-10-CM
The C43–C44 section covers melanoma and other malignant neoplasms of skin with 180 ICD-10-CM diagnosis codes, of which 125 are billable in fiscal year 2026. The section is organized into the 2 code ranges listed below.
Code Ranges in This Section 2 ranges · 180 codes
| Code Range | Title | Codes | Billable |
|---|---|---|---|
| C43 | Malignant melanoma of skin (C43) | 33 | 24 |
| C44 | Other and unspecified malignant neoplasm of skin (C44) | 147 | 101 |
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the C43–C44 Code Range
ICD-10 codes C43 to C44 cover malignant melanoma and other malignant neoplasms of the skin. These codes are specifically used to classify various types and locations of skin cancers, including melanoma, basal cell carcinoma, squamous cell carcinoma, and Merkel cell carcinoma, with detailed subcodes for precise anatomical sites.
The C43 series is dedicated to malignant melanoma of the skin, including detailed codes for melanoma on the lip, eyelids, ears, face, scalp, trunk, limbs, and overlapping skin sites. Synonyms such as "malignant melanoma of oral cavity" or "malignant melanoma of nail bed" help identify these conditions accurately. The C44 code range includes other malignant skin tumors like basal cell and squamous cell carcinomas, with further subdivisions by specific body parts (e.g., lip, eyelid, ear, face, scalp, trunk, limbs). For instance, C44.01 identifies basal cell carcinoma of the lip, while C44.52 codes a squamous cell carcinoma of the trunk. Additionally, the C4A category covers Merkel cell carcinoma, a rare aggressive skin cancer, with subcodes for anatomical locations such as the lip, eyelid, and limbs. This coding structure supports precise documentation of diverse skin malignancies, enabling targeted diagnosis and treatment planning.
Questions About This Page
How many codes are in the C43-C44 range?
The C43-C44 range contains 180 ICD-10-CM diagnosis codes in FY 2026. 125 of them are billable, and the rest are category headers that organize the section.
What conditions does C43-C44 cover?
The range covers melanoma and other malignant neoplasms of skin. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
