ICD-10 Code C82 – Follicular lymphoma (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C82 – Follicular lymphoma
What it is
Follicular lymphoma is a type of non-Hodgkin lymphoma that starts in B lymphocytes. Use this code when the record documents follicular lymphoma without a more specific subtype.
Clinical signs
Common findings include painless enlarged lymph nodes and a slowly progressive course. Clinical features vary; refer to documentation for biopsy, staging, or site-specific details.
When to use this code
Use C82 when the provider documents follicular lymphoma and does not specify another lymphoma type or site. It may also apply when the diagnosis is confirmed but the chart lacks further detail. Check documentation for the exact histology and any coded subcategory requirements.
Do not use for
Do not use this code for other non-Hodgkin lymphomas, Hodgkin lymphoma, or reactive lymphadenopathy. If the record names a different lymphoma subtype, code that diagnosis instead.
Coding tip
Review pathology and oncology notes for the exact lymphoma wording before assigning the code.