In simple words: This code indicates cancer in the left kidney, but not in the part that collects urine. Kidney cancer is often found during tests for other health issues.Common signs include pain in the lower back or side, blood in the urine, weakness, weight loss, and fatigue. A lump might be felt if the tumor grows large.Treatment may involve surgery, chemotherapy, or radiation.

This code represents a cancerous growth affecting the functional tissue of the left kidney, specifically excluding the renal pelvis (the funnel-shaped area where urine collects before passing to the ureter). Common types of kidney cancer include renal cell carcinoma (more prevalent in adults) and Wilms tumor (typically affecting children).

Example 1: A 60-year-old male patient presents with persistent lower back pain and blood in his urine. After a thorough examination and imaging studies (CT and MRI), a malignant neoplasm is discovered in his left kidney, but not involving the renal pelvis. The diagnosis is confirmed by biopsy, and he is scheduled for a partial nephrectomy., A 2-year-old child is found to have a palpable abdominal mass during a routine check-up.Subsequent imaging and biopsy confirm a Wilms tumor affecting the left kidney, sparing the renal pelvis. Treatment planning begins, including chemotherapy and surgery., During a workup for hypertension, a 45-year-old female undergoes an abdominal ultrasound, which reveals a suspicious mass in her left kidney. Further evaluation with CT and biopsy confirms a malignant neoplasm, not involving the renal pelvis. Due to the size and location of the tumor, a radical nephrectomy is recommended.

Diagnosis must be confirmed by appropriate diagnostic methods, such as biopsy and imaging studies.Documentation should include laterality (left kidney), location of the tumor (excluding renal pelvis), type and stage of the neoplasm, and associated symptoms.If surgery is performed, operative reports should be detailed.