ICD-10 Code C82.98 – Follicular lymphoma, unspecified, lymph nodes of multiple sites (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C82.98 – Follicular lymphoma, unspecified, lymph nodes of multiple sites
What it is
This code identifies follicular lymphoma when the site is multiple lymph nodes and the subtype is not further specified. Use it for a documented lymphoma involving more than one nodal region.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include painless lymph node enlargement, fatigue, or other lymphoma-related systemic features, but the record should support the diagnosis and nodal distribution.
When to use this code
Use C82.98 when the provider documents follicular lymphoma affecting lymph nodes of multiple sites and does not specify a more exact anatomic site or subtype. It is appropriate for confirmed diagnoses in outpatient, inpatient, or problem-list documentation. If the record names a different nodal pattern or a more specific follicular lymphoma code, use that instead.
Do not use for
Do not use this code for follicular lymphoma limited to one lymph node region or for non-follicular lymphomas. Check documentation if the site, laterality, or histology is unclear.
Coding tip
Verify that “multiple sites” is explicitly documented before assigning C82.98.