Personal history of melanoma in-situ

This code signifies a patient's past diagnosis of melanoma that was confined to the epidermis (in situ) and has since been treated or is in remission. It indicates that the patient no longer has active melanoma in situ but has a history of the condition. This history is important for ongoing surveillance and risk assessment.

Apply this code when documenting a patient's medical history who has previously been diagnosed with and treated for melanoma in situ of the skin. This would be used for follow-up appointments, routine screenings, or when the patient presents for unrelated conditions but their medical history needs to be fully captured. It is appropriate when there is no current evidence of active disease.

• Do not use this code for active melanoma in situ; instead, code the current melanoma in situ.
• Ensure the documentation specifies "in situ" and "melanoma" to support this code.
• Refer to the "Excludes 2" note: if the melanoma in situ was of a site other than the skin, a different personal history code for in situ neoplasm of that specific site should be used.