154 Malignant neoplasm of rectum rectosigmoid junction and anus 
154.0 Malignant neoplasm of rectosigmoid junction convert 154.0 to ICD-10-CM 154.1 Malignant neoplasm of rectum convert 154.1 to ICD-10-CM 154.2 Malignant neoplasm of anal canal convert 154.2 to ICD-10-CM 154.3 Malignant neoplasm of anus unspecified site convert 154.3 to ICD-10-CM
154.8 Malignant neoplasm of other sites of rectum rectosigmoid junction and anus convert 154.8 to ICD-10-CM