Malignant neoplasm of ureteric orifice

This code signifies a primary cancerous tumor originating in the ureteric orifice, the opening where the ureter enters the bladder. These neoplasms are typically transitional cell carcinomas, similar to those found elsewhere in the urinary tract. The malignancy can affect the function of the ureter and bladder.

Apply this code when documentation clearly indicates a primary malignant neoplasm specifically 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 the primary tumor.

• Ensure documentation specifies "ureteric orifice" and not a more general bladder or ureter site.
• Distinguish from secondary malignancies or benign lesions of the ureteric orifice.
• Code any associated distant metastases separately, following primary malignancy sequencing rules.