ICD-10 Code C86.01 – Extranodal NK/T-cell lymphoma, nasal type, in remission (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C86.01 – Extranodal NK/T-cell lymphoma, nasal type, in remission
What it is
C86.01 identifies a history of extranodal NK/T-cell lymphoma, nasal type, that is currently in remission. Use it when the malignancy is no longer active, but the diagnosis remains clinically relevant.
Clinical signs
Clinical features vary; refer to documentation. This lymphoma commonly involves the nasal cavity and may have had destructive local disease, but the code itself reflects remission rather than active findings.
When to use this code
Use C86.01 when the provider documents extranodal NK/T-cell lymphoma, nasal type, as in remission, including complete remission or no evidence of active disease. It is appropriate for follow-up visits, surveillance, and ongoing cancer history documentation. Check the record for whether the condition is active instead.
Do not use for
Do not use this code for active disease, suspected lymphoma, or a personal history code that does not specify remission. If the chart only says “history of lymphoma,” check documentation.
Coding tip
Match the code to the provider’s exact remission language; if remission is not stated, verify whether an active lymphoma code is more appropriate.