D01.2
BillableCarcinoma in situ of rectum
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
This is an early stage of cancer in the rectum where abnormal cells are present but have not yet invaded deeper tissues or spread to other parts of the body. It represents a precancerous condition that requires treatment to prevent progression to invasive cancer.
Coding Tips
- •Carcinoma in situ (CIS) is a pre-invasive malignancy and should be coded separately from invasive rectal cancer; do not use this code if invasive cancer has been confirmed
- •This code is appropriate for screening findings or biopsy results showing CIS; ensure documentation specifies the rectum location and confirms the in situ nature of the lesion
Code Hierarchy
└D01Carcinoma in situ of other and unspecified digestive organs└D01.2Carcinoma in situ of rectum
└D01.2Carcinoma in situ of rectum