ICD-10 Code C82.11 – Follicular lymphoma grade II, lymph nodes of head, face, and neck (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C82.11 – Follicular lymphoma grade II, lymph nodes of head, face, and neck
What it is
C82.11 identifies follicular lymphoma, grade II, involving lymph nodes of the head, face, and neck. It is a specific non-Hodgkin lymphoma diagnosis coded by both histology and nodal location.
Clinical signs
Patients often present with painless, enlarged lymph nodes in the affected region. Clinical features vary; refer to documentation for biopsy confirmation and the recorded grade.
When to use this code
Use this code when the provider documents grade II follicular lymphoma and specifies lymph node involvement in the head, face, or neck. It also fits pathology-confirmed cases with that exact anatomic site. If the site or grade is not stated clearly, check documentation.
Do not use for
Do not use it for follicular lymphoma at another lymph node site or for a different grade. Do not assign it when the record only says lymphoma, unspecified, or when the diagnosis is not confirmed.
Coding tip
Match both the grade and the nodal location exactly as documented before selecting C82.11.