Benign neoplasm of right kidney

This code signifies a non-cancerous growth originating in the parenchymal tissue or collecting system of the right kidney. These are typically slow-growing and do not metastasize to other parts of the body. Common types include renal adenomas, oncocytomas, and angiomyolipomas.

Apply this code when documentation explicitly states a benign neoplasm is located in the right kidney. This is appropriate for initial diagnosis, follow-up, or treatment of such a lesion. Supporting documentation includes pathology reports confirming benignity, imaging studies identifying a mass consistent with a benign tumor, or physician notes detailing the diagnosis.

• Ensure laterality is clearly documented as "right kidney"; if unspecified, use the unspecified kidney code.
• Distinguish carefully from malignant neoplasms (C64.9 for unspecified kidney, C64.1 for right kidney) based on pathology.
• Do not use this code for cysts, which are coded separately (e.g., N28.1 for cyst of kidney, acquired).