Malignant neoplasm of left renal pelvis

This code signifies a primary cancerous tumor originating in the left renal pelvis, the funnel-shaped part of the kidney that collects urine before it passes to the ureter. This malignancy is typically a urothelial carcinoma, arising from the lining of the renal pelvis.

Apply this code when documentation explicitly states a primary malignant neoplasm located in the left renal pelvis. This diagnosis is typically confirmed through imaging (e.g., CT scan, MRI) and biopsy results. Use this code for the initial diagnosis and subsequent encounters related to the primary tumor.

• Ensure laterality is clearly documented as "left" to support this specific code.
• Distinguish from secondary malignancies or benign neoplasms of the renal pelvis.
• Sequence as the primary diagnosis when the malignancy is the reason for the encounter.