ICD-10 Code C82.81 – Other types of follicular lymphoma, lymph nodes of head, face, and neck (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C82.81 – Other types of follicular lymphoma, lymph nodes of head, face, and neck
What it is
This code identifies follicular lymphoma involving lymph nodes in the head, face, or neck, when the record specifies other follicular lymphoma types. Use it for a documented lymphoma diagnosis in these nodal regions.
Clinical signs
Clinical features vary; refer to documentation. Typical findings may include painless enlarged lymph nodes in the head or neck, with diagnosis confirmed by pathology or other specialist evaluation.
When to use this code
Use this code when the provider documents other types of follicular lymphoma and clearly states the involved lymph nodes are in the head, face, or neck. It is also appropriate when the diagnosis is established and the anatomic site is specified in the record.
Do not use for
Do not use this code if the lymphoma site is elsewhere or if the record does not specify head, face, or neck lymph nodes. Check documentation when the histologic type is unclear or another lymphoma subtype is named.
Coding tip
Always match both the lymphoma type and nodal location in the provider’s documentation before assigning C82.81.