ICD-10 Code C86.51 – Angioimmunoblastic T-cell lymphoma, in remission (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C86.51 – Angioimmunoblastic T-cell lymphoma, in remission
What it is
This code identifies a history of angioimmunoblastic T-cell lymphoma that is currently in remission. Use it when the lymphoma is not active, but the diagnosis remains clinically relevant.
Clinical signs
Clinical features vary; refer to documentation. Prior disease may have included lymphadenopathy, systemic symptoms, or abnormal immune findings, but this code itself reflects remission rather than active disease.
When to use this code
Use C86.51 when the provider documents angioimmunoblastic T-cell lymphoma as in remission, including complete or partial remission if specified. Code it for follow-up visits, surveillance, or ongoing management when no active lymphoma is described.
If the record shows recurrence, progression, or active treatment for disease, check documentation and use the active lymphoma code instead.
Do not use for
Do not use this code for active angioimmunoblastic T-cell lymphoma or for unspecified T-cell lymphoma. Also avoid it if the chart only says “history of lymphoma” without stating remission.
Coding tip
Confirm the provider explicitly documents “in remission” before assigning C86.51.