2025 ICD-10-CM code C64.1
(Valid) Effective Date: N/A Neoplasms - Malignant neoplasms of urinary tract Neoplasms Feed
Malignant neoplasm of the right kidney, except the renal pelvis.
Medical necessity for the use of this code is established by the confirmed diagnosis of a malignant neoplasm through appropriate diagnostic methods. It is essential to distinguish this condition from neoplasms of the renal pelvis, which are coded differently.
In simple words: This code indicates cancer in the right kidney, but not in the area where urine collects.
This code represents a cancerous growth originating in the right kidney, excluding the renal pelvis. The renal pelvis is the funnel-shaped part of the kidney that collects urine before it passes into the ureter.
Example 1: A 60-year-old male presents with flank pain and hematuria. Imaging reveals a mass in the right kidney, confirmed as renal cell carcinoma through biopsy. The tumor is located in the upper pole of the kidney, not involving the renal pelvis. C64.1 is used for coding., A 2-year-old child undergoes imaging studies that reveal a Wilms tumor in the right kidney, sparing the renal pelvis. The appropriate code is C64.1. , During a routine health checkup, an asymptomatic patient is found to have a small mass in their right kidney. Biopsy confirms it to be a malignant tumor originating in the renal cortex. As the renal pelvis is unaffected, C64.1 is assigned.
Medical record documentation should include details from imaging studies (ultrasound, CT, MRI), biopsy results confirming malignancy, and the specific location of the tumor within the kidney. Details about laterality (right kidney) and the exclusion of the renal pelvis should also be explicitly documented.
- Specialties:Urology, Oncology
- Place of Service:Inpatient Hospital, Outpatient Hospital, Physician's Office