D04.9 Carcinoma in situ of skin, unspecified

Billable ICD-10-CM code, FY2026.

Applies from D04 Carcinoma in situ of skin

Excludes1 (never code together)

• erythroplasia of Queyrat (penis) NOS (D07.4)
• melanoma in situ (D03.-)

MS-DRG index

Defines the logic of DRG(s) 606-607 in MDC 09.

Approximate ICD-9-CM (GEMs)

• 232.9 Carcinoma in situ of skin, site unspecified (approximate)

Diagnosis Index entries for D04.9

• Adenocarcinoma › apocrine › in situ › unspecified site

Nearby codes

• D04.7 Carcinoma in situ of skin of lower limb, including hip
• D04.70 Carcinoma in situ of skin of unspecified lower limb, including hip
• D04.71 Carcinoma in situ of skin of right lower limb, including hip
• D04.72 Carcinoma in situ of skin of left lower limb, including hip
• D04.8 Carcinoma in situ of skin of other sites
• D04.9 Carcinoma in situ of skin, unspecified (this code)