ICD-10 Code C82.82 – Other types of follicular lymphoma, intrathoracic lymph nodes (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C82.82 – Other types of follicular lymphoma, intrathoracic lymph nodes
What it is
This code identifies follicular lymphoma involving the intrathoracic lymph nodes, such as mediastinal or hilar nodes. It applies when the record specifies another follicular lymphoma type and the chest lymph nodes are the documented site.
Clinical signs
Clinical features vary; refer to documentation. Patients may have enlarged intrathoracic lymph nodes found on imaging or biopsy, with lymphoma confirmed by pathology and site specified in the chest.
When to use this code
Use this code when the provider documents follicular lymphoma affecting intrathoracic lymph nodes and specifies a nontraditional or other follicular subtype. It is appropriate for confirmed lymphoma cases where the anatomic site is the chest. Check documentation if the record only says lymphoma without site detail.
Do not use for
Do not use this code for unspecified lymphoma, other nodal sites, or non-follicular lymphoma types. If the chart does not clearly identify intrathoracic lymph node involvement, check documentation.
Coding tip
Verify both the follicular lymphoma subtype and the intrathoracic nodal site before assigning C82.82.