Intraductal carcinoma in situ of right breast

This code signifies the presence of non-invasive malignant cells confined to the ducts of the right breast. It represents ductal carcinoma in situ (DCIS) specifically located in the right breast, indicating that the cancer has not spread beyond the ductal walls.

Apply this code when documentation clearly states a diagnosis of intraductal carcinoma in situ affecting the right breast. This is typically supported by pathology reports confirming DCIS and specifying the laterality.

• Ensure laterality is explicitly documented as "right breast" to avoid using an unspecified laterality code.
• Do not use this code for invasive breast cancer; it is strictly for in situ lesions.
• Verify that the pathology report confirms the "in situ" nature; otherwise, a code for malignant neoplasm of the breast (C50.-) may be more appropriate.