ICD-10 Code C82.85 – Other types of follicular lymphoma, lymph nodes of inguinal region and lower limb (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C82.85 – Other types of follicular lymphoma, lymph nodes of inguinal region and lower limb
What it is
This code identifies follicular lymphoma involving lymph nodes in the groin or lower limb, when the subtype is not otherwise specified in the record. Use it for a documented lymphoma diagnosis limited to those nodal regions.
Clinical signs
Clinical features vary; refer to documentation. Follicular lymphoma is often noted as painless lymph node enlargement, sometimes with generalized lymphadenopathy, and diagnosis is usually confirmed by pathology or oncology assessment.
When to use this code
Use this code when the provider documents follicular lymphoma affecting inguinal or lower-limb lymph nodes and does not name a more specific follicular subtype. It also applies when the record clearly localizes the disease to those nodes. Check documentation if the site, subtype, or laterality is unclear.
Do not use for
Do not use this code for lymphomas in other nodal regions or for non-follicular lymphoma types. If the chart only says “lymphoma” without follicular type or anatomic site, check documentation.
Coding tip
Verify both the follicular lymphoma type and the inguinal/lower-limb nodal location before assigning C82.85.