ICD-10 Code C82.44 – Follicular lymphoma grade IIIb, lymph nodes of axilla and upper limb (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C82.44 – Follicular lymphoma grade IIIb, lymph nodes of axilla and upper limb
What it is
This code identifies follicular lymphoma grade IIIb involving lymph nodes in the axilla or upper limb. Use it when documentation specifies this exact histology and nodal site.
Clinical signs
Findings may include enlarged, non-tender lymph nodes in the axilla or arm region, with pathology confirming grade IIIb follicular lymphoma. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record clearly states follicular lymphoma grade IIIb and identifies axillary or upper-limb lymph nodes as the involved site. It is appropriate for confirmed diagnoses, staging, or oncology follow-up when that exact location is documented.
If the note names follicular lymphoma but does not specify grade IIIb or the nodal region, check documentation before coding. Do not infer the site from symptoms or imaging alone.
Do not use for
Do not use this code for other lymphoma grades, unspecified follicular lymphoma, or nodal disease in a different anatomic region. Check documentation if the pathology report is incomplete.
Coding tip
Confirm both the grade and the lymph node location in the pathology or oncology note before assigning C82.44.