Malignant neoplasm of renal pelvis

This code signifies the presence of a cancerous tumor originating in the renal pelvis, the funnel-shaped part of the kidney that collects urine before it passes to the ureter. This malignancy is a type of urothelial carcinoma, often presenting with hematuria.

Apply this code when documentation confirms a primary malignant neoplasm specifically located within the renal pelvis. This diagnosis is typically established through imaging studies (e.g., CT, MRI) and confirmed by biopsy or surgical pathology reports.

• Differentiate from malignancies of the kidney parenchyma (e.g., renal cell carcinoma) or ureter.
• Ensure the pathology report explicitly states "renal pelvis" as the primary site.
• Sequence according to the primary diagnosis guidelines, often as the principal diagnosis if it's the reason for the encounter.