C82.90

HCC Category Mapping

What This Code Means

Follicular lymphoma of an unspecified type in an unspecified location in the body.

Coding Tips

• •This is a less specific code; use only when the exact type of follicular lymphoma and anatomical site cannot be determined
• •Query the provider if more specific site information is available in the medical record

Clinical Significance

Follicular lymphoma, unspecified type and unspecified site, is the least specific code in the C82 category. It should be used only when neither the specific follicular lymphoma grade/subtype nor the anatomical site can be determined from available documentation. This code often indicates incomplete pathology reporting or documentation gaps that should prompt provider queries to obtain more specific information for accurate coding.

Documentation Requirements

• ✓Pathology confirming follicular lymphoma without grade specification
• ✓Documentation explaining why grade and site cannot be determined
• ✓Query to pathology for grade determination if not already performed
• ✓Query to provider for site information from imaging or clinical notes
• ✓Staging evaluation if available
• ✓Treatment documentation

Commonly Confused Codes