The D05.12 Diagnosis Code is a critical component of the International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) system. Specifically, D05.12 is used to classify Intraductal carcinoma in situ of the left breast. This code is essential for medical billing, statistical tracking, and clinical documentation, providing a standardized way to record this specific diagnosis.
D05.12 is categorized as a billable and specific code within the ICD-10-CM, meaning it is precise enough to be used for reimbursement purposes. It falls under the broader category of D05, which encompasses carcinoma in situ of the breast. Within D05, codes are further refined to specify the type and location of the carcinoma in situ. D05.1 specifically refers to intraductal carcinoma in situ, and the sub-classification D05.12 pinpoints the location to the left breast.
Several terms are used synonymously with D05.12 to describe the same condition. These include:
- Ductal carcinoma in situ, left breast
- Intraductal carcinoma in situ of bilateral breasts (when both breasts are affected, though D05.12 specifically refers to the left)
- Ductal carcinoma in situ, bilateral breasts (similarly, when both are affected, but D05.12 is for the left only)
- Ductal carcinoma in situ, l breast (abbreviation for left breast)
The ICD-10-CM code D05.12 has been in use since 2016, with the initial version becoming effective on October 1, 2015. It has remained unchanged through the annual updates, including the current 2025 ICD-10-CM edition which is effective from October 1, 2024. This stability indicates the code’s continued relevance and accuracy in classifying this diagnosis.
Understanding the context of D05.12 within the ICD-10-CM hierarchy is crucial. It is adjacent to other related codes such as D05.11, which denotes intraductal carcinoma in situ of the right breast, and D05.10, for unspecified breast. These distinctions are important for accurate coding and data collection. Furthermore, D05.12 is part of a larger group of codes ranging from D04 (Carcinoma in situ of skin) to D06 (Carcinoma in situ of cervix uteri), placing it within the broader spectrum of in situ neoplasms.
For healthcare providers and medical coding professionals, the D05.12 diagnosis code is indispensable. It allows for precise documentation and billing related to intraductal carcinoma in situ of the left breast. Accurate use of this code ensures proper reimbursement and contributes to valuable epidemiological data concerning breast health.
