Neoplasm of unspecified behavior of bladder

This code signifies a tumor within the bladder where the pathologist has not definitively classified it as benign or malignant. It indicates that the cellular characteristics are ambiguous, preventing a more specific diagnosis of either a non-cancerous growth or a cancerous one.

This code is appropriate when pathology reports describe a bladder neoplasm as "uncertain behavior," "unspecified behavior," or "indeterminate." It should be used when there is insufficient information to assign a code for a benign, malignant, or in situ neoplasm.

• Always seek clarification from the provider or pathologist if a more definitive diagnosis can be obtained.
• Do not use this code if the documentation clearly states the neoplasm is benign (e.g., papilloma) or malignant (e.g., carcinoma).
• Sequence this code as the primary diagnosis when the neoplasm of uncertain behavior is the reason for the encounter.