ICD-10 Code C86.5 – Angioimmunoblastic T-cell lymphoma (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C86.5 – Angioimmunoblastic T-cell lymphoma
What it is
C86.5 identifies angioimmunoblastic T-cell lymphoma, a rare, aggressive non-Hodgkin lymphoma of mature T cells. It usually involves lymph nodes and may spread beyond them.
Clinical signs
Common findings include generalized lymphadenopathy, fever, weight loss, rash, and enlarged spleen or liver. Clinical features vary; refer to documentation.
When to use this code
Use C86.5 when the provider documents angioimmunoblastic T-cell lymphoma by name or clearly confirms this subtype. It is appropriate for confirmed diagnoses, including pathology-supported cases and follow-up encounters for the same lymphoma.
Do not use for
Do not use this code for unspecified lymphoma, other peripheral T-cell lymphomas, or reactive lymph node disorders. Check documentation if the exact subtype is not confirmed.
Coding tip
Code only when the record names angioimmunoblastic T-cell lymphoma; otherwise, query for the specific lymphoma subtype.