Malignant neoplasm of right kidney, except renal pelvis

This code signifies a primary cancerous tumor originating in the parenchymal tissue of the right kidney, excluding malignancies of the renal pelvis. It indicates an uncontrolled growth of abnormal cells within the functional tissue of the right kidney.

Apply this code when documentation specifies a primary malignant neoplasm located in the right kidney, such as renal cell carcinoma or Wilms' tumor, and explicitly excludes involvement of the renal pelvis. This code is appropriate for initial diagnosis, treatment, and follow-up of such a malignancy.

• Ensure laterality is clearly documented as "right" kidney.
• Distinguish from renal pelvis malignancies (C65.-) and unspecified kidney malignancies (C64.9).
• Always sequence as the primary diagnosis when the reason for the encounter is related to the malignancy.