C85.82

HCC Category Mapping

What This Code Means

This code describes a specific type of cancer of the lymph system (non-Hodgkin lymphoma) that is not one of the more common types, and the cancer is located in the lymph nodes within the chest cavity. It is used when the lymphoma type has been specifically identified but does not fit into the standard categories.

Coding Tips

• •Ensure the pathology report specifies both the lymphoma subtype and confirms intrathoracic (chest) location before assigning this code
• •Do not use this code for Hodgkin lymphoma or for non-Hodgkin lymphoma in other anatomical locations; verify the exact site of involvement matches intrathoracic lymph nodes

Clinical Significance

Other specified non-Hodgkin lymphoma involving intrathoracic lymph nodes captures rare, named NHL subtypes at a defined anatomical location. Accurate site-specific coding supports treatment planning, radiation field design, and outcomes tracking. These lymphoma subtypes often have distinct clinical behaviors and treatment requirements compared to common NHL types.

Documentation Requirements

• ✓Pathology confirming the specific NHL subtype by WHO classification (with immunophenotyping and molecular studies)
• ✓Imaging or clinical documentation confirming involvement of intrathoracic lymph nodes
• ✓Verification that no more specific ICD-10 code exists for this NHL subtype
• ✓Staging information and treatment plan

Commonly Confused Codes