Current
C20 — Malignant neoplasm of rectum
Part of Chapter 2: Neoplasms , block Malignant neoplasms of digestive organs (C15-C26) .
Official Notes
Inclusion Terms
Malignant neoplasm of rectal ampulla
Excludes1
malignant carcinoid tumor of the rectum ( C7A.026 )
Child Codes
C20 has no child codes in the FY 2027 release -- it is used on its own.
FY 2027 effective October 1, 2026 · CDC NCHS and CMS