D09.9 Carcinoma in situ, unspecified

Billable ICD-10-CM code, FY2026.

Applies from D09 Carcinoma in situ of other and unspecified sites

Excludes1 (never code together)

• melanoma in situ (D03.-)

MS-DRG index

Defines the logic of DRG(s) 826-828 in MDC 17.

Approximate ICD-9-CM (GEMs)

• 234.9 Carcinoma in situ, site unspecified

Nearby codes

• D09.20 Carcinoma in situ of unspecified eye
• D09.21 Carcinoma in situ of right eye
• D09.22 Carcinoma in situ of left eye
• D09.3 Carcinoma in situ of thyroid and other endocrine glands
• D09.8 Carcinoma in situ of other specified sites
• D09.9 Carcinoma in situ, unspecified (this code)