Malignant neoplasm of ureteric orifice

This code signifies a primary cancerous tumor originating in the opening of the ureter into the bladder. It represents a malignant growth specifically at the ureteric orifice, which is a distinct anatomical site within the urinary tract.

Apply this code when documentation explicitly states a primary malignant neoplasm located at the ureteric orifice. This diagnosis is typically confirmed through biopsy and imaging studies. Use this code for the initial diagnosis and subsequent treatment of this specific cancer.

• Ensure documentation specifies "ureteric orifice" and not a more general bladder or ureter site.
• Do not confuse with malignant neoplasms of the bladder (e.g., trigone, dome) or the ureter proper.
• Always sequence as the primary diagnosis when it is the reason for the encounter.