Malignant neoplasm of lateral wall of urinary bladder

This code signifies a primary cancerous tumor originating from the lateral wall of the urinary bladder. This malignancy involves the uncontrolled growth of abnormal cells within the bladder's muscular or mucosal layers on its side.

Apply this code when documentation explicitly states a malignant neoplasm located specifically on the lateral wall of the urinary bladder. Supporting documentation would include pathology reports confirming malignancy and operative reports or imaging studies detailing the tumor's precise location.

• Ensure the documentation specifies "lateral wall" to differentiate from other bladder sites.
• Do not use for secondary malignancies or carcinoma in situ; these have distinct codes.
• Consider an additional code for the specific histological type of the neoplasm if documented (e.g., transitional cell carcinoma).