ICD-10 Code C82.52 – Diffuse Follicle Center Lymphoma, Intrathoracic Lymph Nodes (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C82.52 – Diffuse follicle center lymphoma, intrathoracic lymph nodes
What it is
C82.52 identifies diffuse follicle center lymphoma involving intrathoracic lymph nodes. Use it for a follicular B-cell lymphoma documented as affecting lymph nodes within the chest.
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 or specialist assessment.
When to use this code
Use this code when the provider documents diffuse follicle center lymphoma and specifies intrathoracic lymph node involvement. It fits cases involving mediastinal or other chest lymph nodes, when no more specific site is recorded. If the record only says lymphoma in the chest, check documentation before coding.
Do not use for
Do not use C82.52 for unspecified follicular lymphoma or for lymphoma in non-thoracic lymph nodes. If the site is not documented or another lymphoma type is named, check documentation.
Coding tip
Confirm both the lymphoma subtype and the intrathoracic nodal site in the provider note before assigning C82.52.