ICD-10 Code C82.80 – Other types of follicular lymphoma, unspecified site (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C82.80 – Other types of follicular lymphoma, unspecified site
What it is
C82.80 identifies follicular lymphoma that does not fit a more specific subtype and has no documented primary site. Use it when the record confirms this lymphoma diagnosis but the site is not stated.
Clinical signs
Clinical features vary; refer to documentation. Common findings in follicular lymphoma include painless lymph node enlargement, possible fatigue, and disease noted on imaging, biopsy, or hematology evaluation.
When to use this code
Use this code when the provider documents other follicular lymphoma and does not specify a site. It also fits when the chart confirms follicular lymphoma but available documentation does not identify a primary anatomic location. Check documentation before selecting a more specific code.
Do not use for
Do not use it for a specified follicular lymphoma site when the record names a location. Do not use it for other non-follicular lymphomas or when the diagnosis is not confirmed.
Coding tip
If the pathology or oncology note names a site, code that site-specific option instead of this unspecified-site code.