ICD-10 Code C82.84 – Other types of follicular lymphoma, lymph nodes of axilla and upper limb (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C82.84 – Other types of follicular lymphoma, lymph nodes of axilla and upper limb
What it is
This code identifies follicular lymphoma, a slow-growing non-Hodgkin lymphoma, located in lymph nodes of the axilla or upper limb. Use it when the record specifies this site and another follicular lymphoma subtype.
Clinical signs
Patients may present with enlarged, painless lymph nodes in the armpit or upper arm region. Clinical features vary; refer to documentation for pathology, staging, and exact lymphoma subtype.
When to use this code
Use C82.84 when the provider documents follicular lymphoma affecting axillary or upper-limb lymph nodes and does not name a more specific follicular lymphoma code. It fits confirmed diagnoses from biopsy or oncology assessment. Check documentation if the site or subtype is unclear.
Do not use for
Do not use this code for unspecified lymphoma, other nodal sites, or non-follicular lymphomas. If the record lacks a clear site or subtype, check documentation before coding.
Coding tip
Match the documented anatomic site exactly; axilla and upper limb are required for this code.