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D04.4

Billable

Carcinoma in situ of skin of scalp and neck

This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

This code describes an early stage skin cancer (carcinoma in situ) found on the scalp or neck area where abnormal cells are present but have not yet spread to deeper layers of skin or other parts of the body. It represents a precancerous condition that requires treatment to prevent progression to invasive cancer.

Coding Tips

  • •Verify the specific anatomical location (scalp versus neck) in the documentation, as this affects code selection and may require additional specificity codes
  • •Ensure the diagnosis explicitly states 'carcinoma in situ' rather than other skin conditions like actinic keratosis or melanoma in situ, which have different codes

Code Hierarchy

└D04Carcinoma in situ of skin└D04.4Carcinoma in situ of skin of scalp and neck
└D04.4Carcinoma in situ of skin of scalp and neck

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