Tumor Tip of the Week 11-15-2024 Solid Tumor Rules 2025 Update

Scenario: 2024 TURBT: 3.5cm mass right lateral wall path show urothelial carcinoma & large cell neuroendocrine carcinoma

Question: How would you code the histology?

• 8120/3 Urothelial Carcinoma
• 8013/3 Large cell neuroendocrine tumor/combined large cell neuroendocrine carcinoma

Answer: 8013/3 Large cell neuroendocrine tumor/combined large cell neuroendocrine carcinoma

Solid Tumor Rules 2025 Update Urinary–Rule H5 Code combined large cell carcinoma 8013 when the final diagnosis is large cell neuroendocrine carcinoma and any other type of carcinoma (does not apply to sarcoma).

• Make sure you are utilizing the most recent version of the Solid Tumor Rules. Beginning with the 2025 Solid Tumor Update, the rules will be available in a combined file only. Individual site-specific sections will no longer be provided.
• Be sure to review the change log for updates made in November 2024.