ICD-10 Code C85.85 – Other specified types of non-Hodgkin lymphoma, lymph nodes of inguinal region and lower limb (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C85.85 – Other specified types of non-Hodgkin lymphoma, lymph nodes of inguinal region and lower limb
What it is
This code identifies a non-Hodgkin lymphoma that is specified as “other” and involves lymph nodes in the inguinal region or lower limb. Use it when the record names this site and lymphoma type, but not a more specific category.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include enlarged inguinal or lower-limb lymph nodes, persistent swelling, or biopsy-confirmed lymphoma involving those nodes.
When to use this code
Use C85.85 when the provider documents an “other specified” non-Hodgkin lymphoma affecting lymph nodes of the groin or lower extremity. It is appropriate when pathology or oncology notes identify the nodal site and exclude a more specific lymphoma subtype.
If the chart only says non-Hodgkin lymphoma without site detail, or names a different nodal region, do not default to this code. Check documentation for the exact anatomic location and histology wording.
Do not use for
Do not use this code for unspecified non-Hodgkin lymphoma, other lymph node regions, or Hodgkin lymphoma. Check documentation if the record does not clearly state inguinal or lower-limb lymph node involvement.
Coding tip
Match the lymphoma subtype and nodal site exactly; if either is unclear, query the provider before assigning C85.85.