ICD-10-CM > C00-D49 > C64-C68 > C65 C65 Malignant neoplasm of renal pelvis Non-Billable/Non-Specific Includes malignant neoplasm of pelviureteric junctionmalignant neoplasm of renal calyces Codes C65.1Malignant neoplasm of right renal pelvisC65.2Malignant neoplasm of left renal pelvisC65.9Malignant neoplasm of unspecified renal pelvis