ICD-10 Code C85.84 – Other specified types of non-Hodgkin lymphoma, lymph nodes of axilla and upper limb (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C85.84 – Other specified types of non-Hodgkin lymphoma, lymph nodes of axilla and upper limb
What it is
This code identifies a non-Hodgkin lymphoma that is specified as “other” and involves lymph nodes in the axilla or upper limb. Use it when the record names this site and does not fit a more specific lymphoma category.
Clinical signs
Clinical features vary; refer to documentation. Commonly, you may see enlarged axillary lymph nodes, a documented lymphoma diagnosis, or imaging and pathology confirming nodal involvement in the upper limb region.
When to use this code
Use C85.84 when the provider documents other specified non-Hodgkin lymphoma affecting lymph nodes of the axilla or upper limb. It is appropriate when the site is clear but the lymphoma type is not coded elsewhere. Check documentation if the note names a more specific lymphoma subtype or a different nodal region.
Do not use for
Do not use this code for Hodgkin lymphoma, unspecified lymphoma, or non-Hodgkin lymphoma in other lymph node groups. If the documentation does not specify the site or type, check documentation before coding.
Coding tip
Confirm both the lymphoma category and the nodal site in the pathology or oncology note before assigning C85.84.