ICD-10 Code C85.9 – Non-Hodgkin lymphoma, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C85.9 – Non-Hodgkin lymphoma, unspecified
What it is
C85.9 identifies a diagnosis of non-Hodgkin lymphoma when the record does not specify the exact lymphoma type. Use it for a malignant lymphoid neoplasm documented only as non-Hodgkin lymphoma.
Clinical signs
Clinical features vary; refer to documentation. Commonly recorded findings include enlarged lymph nodes, unexplained weight loss, fever, night sweats, or other lymphoma-related manifestations.
When to use this code
Use C85.9 when the provider documents non-Hodgkin lymphoma but does not name a subtype. It also fits when the chart confirms lymphoma, yet the specific histology is unavailable or not stated. If a more specific diagnosis appears later, code that instead.
Do not use for
Do not use C85.9 for Hodgkin lymphoma or for a named non-Hodgkin subtype when the documentation supports a more specific code. Check documentation if the record mentions leukemia, metastatic disease, or another primary cancer.
Coding tip
Query for the exact lymphoma subtype whenever the chart only says “non-Hodgkin lymphoma.”