C82.17

HCC Category Mapping

What This Code Means

This is a type of cancer of the lymph system (lymphoma) that starts in the spleen and is classified as grade II, meaning it grows at a moderate speed. Follicular lymphoma is one of the most common types of non-Hodgkin lymphoma.

Coding Tips

• •Ensure the grade (II in this case) is documented in the medical record, as different grades have different treatment approaches and prognoses
• •Verify that the spleen is specifically identified as the primary site; if the lymphoma involves multiple sites including the spleen, additional codes may be needed to capture all involved sites

Clinical Significance

Follicular lymphoma grade II involving the spleen indicates splenic infiltration with intermediate-grade disease. Splenic involvement automatically classifies as at least stage III disease. Grade II splenic involvement may present as splenomegaly with or without cytopenias and has implications for treatment decisions including consideration of splenectomy in symptomatic patients.

Documentation Requirements

• ✓Pathology confirming grade II follicular lymphoma
• ✓Imaging documenting splenic involvement (size, focal lesions, diffuse pattern)
• ✓Complete blood count to assess for hypersplenism-related cytopenias
• ✓Ann Arbor stage (at least stage III with splenic involvement)
• ✓Treatment plan including whether splenectomy is being considered

Commonly Confused Codes