ICD-10 Code C82.92 – Follicular lymphoma, unspecified, intrathoracic lymph nodes (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C82.92 – Follicular lymphoma, unspecified, intrathoracic lymph nodes
What it is
This code identifies follicular lymphoma involving intrathoracic lymph nodes when the specific site within the chest is not further documented. It is a lymphoma diagnosis used when the record supports intrathoracic nodal disease but not a more specific subtype or location.
Clinical signs
Clinical features vary; refer to documentation. Follicular lymphoma is often noted as a slow-growing lymph node malignancy, and intrathoracic involvement may be found on imaging or biopsy of chest lymph nodes.
When to use this code
Use this code when the provider documents follicular lymphoma in intrathoracic lymph nodes and does not specify a more exact anatomic site. It also fits when the chart confirms chest nodal involvement but leaves the lymphoma unspecified beyond follicular type. Check documentation if another nodal region is named.
Do not use for
Do not use this code for follicular lymphoma in non-intrathoracic lymph nodes or for other lymphoma subtypes. If the record identifies a more specific site or histology, code that documented diagnosis instead.
Coding tip
Verify both the lymphoma type and the intrathoracic nodal location in the provider note, pathology, or imaging report before assigning C82.92.