ICD-10 Code C86.10 – Hepatosplenic T-cell lymphoma not having achieved remission (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C86.10 – Hepatosplenic T-cell lymphoma not having achieved remission
What it is
This code identifies hepatosplenic T-cell lymphoma that has not achieved remission. Use it when the diagnosis is established and the disease remains active or unresolved.
Clinical signs
Clinical features vary; refer to documentation. Commonly reported findings include hepatomegaly, splenomegaly, and systemic lymphoma symptoms, but you should code only what is documented.
When to use this code
Use C86.10 when the provider documents hepatosplenic T-cell lymphoma and states that remission has not been achieved. It also applies when the record clearly shows persistent active disease after initial evaluation or treatment. If the remission status is unclear, check documentation before assigning the code.
Do not use for
Do not use this code if the lymphoma is in remission, in relapse, or if the record does not specify remission status. Do not assume activity based only on a history of lymphoma.
Coding tip
Confirm the exact lymphoma subtype and current remission status in the provider note before coding.