Secondary malignant neoplasm of large intestine and rectum

This code signifies the presence of a malignant tumor in the large intestine or rectum that originated from a primary cancer elsewhere in the body and subsequently spread to these sites. It indicates metastatic disease to the colon or rectum, not a primary cancer arising within these organs.

Use this code when documentation clearly states a secondary or metastatic malignancy affecting the large intestine or rectum. This typically occurs in patients with a known history of primary cancer (e.g., breast, lung, stomach) where imaging or biopsy confirms spread to the colorectal region.

• Always sequence the primary malignant neoplasm code first, followed by this code for the secondary site.
• Do not use this code for primary colorectal cancer; instead, refer to codes in the 153.x or 154.x series.
• Ensure documentation specifies "secondary," "metastatic," or "spread to" the large intestine/rectum to support this code.