Tumor Tip of the Week 09-26-2025 Bladder Behavior when no information regarding invasion

09-26-2025

Scenario:

• TURBT: Low Grade Urothelial Carcinoma (No other information available regarding invasion)

Question: How will you assign behavior code?

• /2
• /3

Answer: /2

SEER Appendix C Coding Guidelines Bladder –

Code the behavior as in situ (/2) when

• The diagnosis is low grade urothelial carcinoma AND there is no information regarding invasion

Be sure to review the Coding Guidelines for more helpful tips!