ICD-10-CM > C00-D49 > D00-D09 > D05 > D05.0 D05.0 Lobular carcinoma in situ of breast Non-Billable/Non-Specific Codes D05.00Lobular carcinoma in situ of unspecified breastD05.01Lobular carcinoma in situ of right breastD05.02Lobular carcinoma in situ of left breast