Malignant neoplasm of bladder, part unspecified

This code signifies a primary cancerous tumor originating in the bladder when the specific anatomical site within the bladder (e.g., trigone, dome, lateral wall) is not documented. It indicates an invasive or in situ malignancy of the bladder without further localization.

Use this code when the medical record clearly states a diagnosis of bladder cancer but lacks specificity regarding the exact location within the bladder. This is appropriate when pathology confirms malignancy but the operative report or imaging does not pinpoint a subsite.

• Avoid using this code if a more specific bladder subsite (e.g., trigone, lateral wall) is documented; always code to the highest level of specificity.
• This code is for primary bladder malignancy; do not use for metastatic disease to the bladder.
• Consider querying the provider for more specific anatomical documentation if available to allow for a more precise code selection.