ICD-10 Code C85.81 – Other specified types of non-Hodgkin lymphoma, lymph nodes of head, face, and neck (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C85.81 – Other specified types of non-Hodgkin lymphoma, lymph nodes of head, face, and neck
What it is
This code identifies a non-Hodgkin lymphoma affecting lymph nodes in the head, face, or neck when the type is specified but does not fit a more specific lymphoma category. Use it for documented nodal disease in these anatomic sites.
Clinical signs
Typical findings include enlarged lymph nodes in the head, face, or neck, sometimes with pain, firmness, or persistent swelling. Clinical features vary; refer to documentation for the exact lymphoma type and site involvement.
When to use this code
Use C85.81 when the record states an other specified non-Hodgkin lymphoma and clearly identifies lymph nodes of the head, face, or neck as the involved site. It may apply after biopsy, imaging, or oncology assessment documents nodal lymphoma in that region. If the pathology names a more specific lymphoma, code that diagnosis instead.
Do not use for
Do not use this code for unspecified lymphoma, other nodal regions, or primary extranodal disease. If the documentation is incomplete or conflicts with the site, check documentation.
Coding tip
Match the lymphoma subtype and anatomic site exactly as documented before assigning C85.81.