ICD-10 Code C82.48 – Follicular lymphoma grade IIIb, lymph nodes of multiple sites (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C82.48 – Follicular lymphoma grade IIIb, lymph nodes of multiple sites
What it is
C82.48 identifies follicular lymphoma grade IIIb involving lymph nodes at multiple sites. Use it when documentation specifies this exact histology and nodal distribution.
Clinical signs
Clinical features vary; refer to documentation. Typical findings include enlarged lymph nodes and pathology confirming grade IIIb follicular lymphoma.
When to use this code
Use this code when the provider documents follicular lymphoma grade IIIb and states that multiple lymph node sites are involved. It applies after pathology or oncology assessment confirms the grade and anatomic extent. If the note only says follicular lymphoma without grade or site detail, check documentation.
Do not use for
Do not use it for other follicular lymphoma grades or for disease limited to a single nodal region. Check documentation if the record does not clearly support grade IIIb.
Coding tip
Match both the lymphoma grade and the “multiple sites” wording before assigning C82.48.