ICD-10 Code C82.24 – Follicular lymphoma grade III, unspecified, lymph nodes of axilla and upper limb (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C82.24 – Follicular lymphoma grade III, unspecified, lymph nodes of axilla and upper limb
What it is
This code identifies follicular lymphoma grade III involving lymph nodes in the axilla or upper limb, with the grade not further specified. Use it when the record confirms this exact anatomic site and histology.
Clinical signs
Clinical features vary; refer to documentation. Follicular lymphoma commonly presents with painless lymph node enlargement, and the axillary region may be involved on exam or imaging. Pathology should support the grade and site.
When to use this code
Use this code when the provider documents follicular lymphoma grade III and specifies lymph nodes of the axilla or upper limb. It is appropriate for confirmed primary or involved nodal disease at that site. If the grade or site is unclear, check documentation before coding.
Do not use for
Do not use it for other lymphoma subtypes, unspecified lymph node sites, or follicular lymphoma grades that are documented differently. If the record only says “lymphoma” or “lymphadenopathy,” this code is not supported.
Coding tip
Match the exact grade and nodal location in the pathology or oncology note before assigning C82.24.