ICD-10-CM 2027
ICD-10 code for lobular carcinoma-in-situ
Choose a code from the options below based on the documentation.
From the official ICD-10-CM alphabetic index entry “Carcinoma-in-situ › lobular”. Page updated September 29, 2026.
About coding lobular carcinoma-in-situ
The official ICD-10-CM index doesn't give a single default code for lobular carcinoma-in-situ; the code depends on the details below.
More specific lobular carcinoma-in-situ codes (official index)
- with
- infiltrating duct
- breast (female) C50.91 — Malignant neoplasm of breast of unspecified site, female
- male C50.92 — Malignant neoplasm of breast of unspecified site, male
- specified site NEC
- unspecified site (female) C50.91 — Malignant neoplasm of breast of unspecified site, female
- male C50.92 — Malignant neoplasm of breast of unspecified site, male
- intraductal
- breast D05.8 — Other specified type of carcinoma in situ of breast
- specified site NEC
- unspecified site (female) D05.8 — Other specified type of carcinoma in situ of breast
- breast D05.0 — Lobular carcinoma in situ of breast
- specified site NEC
- unspecified site D05.0 — Lobular carcinoma in situ of breast
Common questions about lobular carcinoma-in-situ ICD-10 codes
What is the ICD-10 code for breast lobular carcinoma-in-situ?
- D05.0 — Lobular carcinoma in situ of breast (header code; choose a more specific subcode).