ICD-10 Code C83.95 – Non-follicular (diffuse) lymphoma, unspecified, lymph nodes of inguinal region and lower limb (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C83.95 – Non-follicular (diffuse) lymphoma, unspecified, lymph nodes of inguinal region and lower limb
What it is
This code identifies a non-follicular, diffuse lymphoma with involvement of lymph nodes in the groin or lower limb region. Use it when the record specifies this anatomic site but does not name a more specific lymphoma type.
Clinical signs
Typical findings include enlarged inguinal or lower-extremity lymph nodes, sometimes with pain, firmness, or progressive swelling. Clinical features vary; refer to documentation and pathology when available.
When to use this code
Use C83.95 when the provider documents diffuse large or other non-follicular lymphoma affecting lymph nodes of the inguinal region or lower limb and no more specific subtype is stated. It also fits confirmed lymphoma cases where the site is clearly documented, but the histology remains unspecified. Check documentation if the note mentions multiple nodal regions or a different primary site.
Do not use for
Do not use this code for follicular lymphoma, Hodgkin lymphoma, or lymphoma limited to other lymph node groups. If the record names a more specific non-follicular subtype, code that diagnosis instead.
Coding tip
Verify both the histology and the exact nodal location before assigning C83.95.