154: Malignant neoplasm of rectum, rectosigmoid junction, and anus
Excludes:
benign carcinoid tumor of rectum (209.57)
malignant carcinoid tumor of rectum (209.17)
154.2 Anal canal
Anal sphincter
Excludes:
malignant melanoma of skin of anus (172.5)
malignant neoplasm of skin of anus (173.50-173.59)
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