ICD-10 Code D04.60 – Carcinoma in situ of skin of unspecified upper limb, including shoulder (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D04.60 – Carcinoma in situ of skin of unspecified upper limb, including shoulder
What it is
This code identifies a localized, noninvasive skin cancer on an upper limb or shoulder when the exact site is not specified. The abnormal cells are confined to the epidermis and have not invaded deeper tissue.
Clinical signs
Typical findings include a persistent scaly, crusted, or erythematous skin lesion that may change slowly over time. Clinical features vary; refer to documentation for the exact appearance and location.
When to use this code
Use D04.60 when the provider documents carcinoma in situ of skin on an upper extremity or shoulder but does not identify a more specific subsite. It is appropriate for confirmed in situ disease before any invasive extension is documented. If the note names a precise site, code that more specific option instead.
Do not use for
Do not use this code for invasive skin cancer, benign lesions, or lesions on a different body region. If the documentation is unclear about the diagnosis or site, check documentation.
Coding tip
Match the code to both the in situ diagnosis and the unspecified upper-limb site; a documented exact location may require a more specific code.