ICD-10 Code C83.32 – Diffuse large B-cell lymphoma, intrathoracic lymph nodes (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C83.32 – Diffuse large B-cell lymphoma, intrathoracic lymph nodes
What it is
This code identifies diffuse large B-cell lymphoma involving intrathoracic lymph nodes. It is a malignant B-cell non-Hodgkin lymphoma affecting lymph nodes within the chest.
Clinical signs
Clinical features vary; refer to documentation. Commonly, records describe enlarged intrathoracic lymph nodes confirmed by imaging, biopsy, or pathology showing diffuse large B-cell lymphoma.
When to use this code
Use this code when the provider documents diffuse large B-cell lymphoma in intrathoracic lymph nodes, including mediastinal or hilar nodal involvement as specified. Code it from confirmed pathology or clear provider diagnosis. Check documentation if the site is described only as thoracic or chest without nodal detail.
Do not use for
Do not use it for other lymphoma subtypes, unspecified non-Hodgkin lymphoma, or disease limited to non-nodal intrathoracic structures. If the anatomic site is unclear, check documentation.
Coding tip
Verify both the lymphoma type and the intrathoracic nodal site before assigning C83.32.