D03
Non-billableMelanoma in situ
D03 is the ICD-10-CM code for Melanoma in situ. It is a non-billable category code — use a more specific child code such as D03.0 for billing.
- Status
- Header (non-billable)
- Chapter
- C00-D49
- Subcodes
- 10
- Edition
- FY2026
C00-D49 Neoplasms
What this means — in plain language
MedlinePlus · NIHMelanoma is the most serious type of skin cancer . Often the first sign of melanoma is a change in the size, shape, color, or feel of a mole. Most melanomas have a black or black-blue area. Melanoma may also appear as a new mole. It may be black, abnormal, or "ugly looking." Thinking of "ABCDE" can help you remember what to watch for: Asymmetry - the shape of one half does not match the other Border - the edges are…
Read more about Melanoma at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Conditions mapped to this code
MedlinePlus · NIHPlain-language health-topic references grounded in MedlinePlus (NIH/NLM).
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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