ICD-10 Code C82.08 – Follicular lymphoma grade I, lymph nodes of multiple sites (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C82.08 – Follicular lymphoma grade I, lymph nodes of multiple sites
What it is
This code identifies a low-grade follicular lymphoma, a slow-growing B-cell non-Hodgkin lymphoma, involving lymph nodes in more than one site. Use it when the record specifically states grade I and multiple nodal locations.
Clinical signs
Clinical features vary; refer to documentation. Common findings in follicular lymphoma include painless enlarged lymph nodes and a diagnosis confirmed by pathology or hematology evaluation.
When to use this code
Use C82.08 when the provider documents follicular lymphoma grade I with involvement of multiple lymph node regions. It is appropriate for confirmed diagnoses, including follow-up visits and problem list coding when the condition remains active. Check documentation if the grade or nodal distribution is unclear.
Do not use for
Do not use this code for other follicular lymphoma grades, unspecified follicular lymphoma, or disease limited to a single nodal site. If the record does not confirm grade I or multiple sites, check documentation.
Coding tip
Verify both the lymphoma grade and the anatomic extent in the pathology or oncology note before assigning C82.08.