ICD-10 Code C86.31 – Subcutaneous panniculitis-like T-cell lymphoma, in remission (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C86.31 – Subcutaneous panniculitis-like T-cell lymphoma, in remission
What it is
This code identifies a history of subcutaneous panniculitis-like T-cell lymphoma that is currently in remission. Use it when the lymphoma is no longer active, but the diagnosis remains clinically relevant.
Clinical signs
Clinical features vary; refer to documentation. In active disease, this lymphoma may present as subcutaneous nodules or plaques, often with inflammatory findings that can resemble panniculitis.
When to use this code
Use C86.31 when the record clearly states subcutaneous panniculitis-like T-cell lymphoma is in remission. This may appear in follow-up, surveillance, or oncology history documentation. Code the current remission status only when it is explicitly documented.
Do not use for
Do not use this code for active lymphoma, suspected disease, or nonspecific panniculitis. Check documentation if the note does not clearly state remission.
Coding tip
Confirm the word “remission” in the provider’s assessment before assigning C86.31.