ICD-10 Code C84.7 – Anaplastic large cell lymphoma, ALK-negative (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C84.7 – Anaplastic large cell lymphoma, ALK-negative
What it is
C84.7 identifies anaplastic large cell lymphoma that is ALK-negative, a type of mature T-cell lymphoma. Use it when documentation specifies this exact lymphoma subtype and ALK status.
Clinical signs
Clinical features often include enlarged lymph nodes and systemic “B” symptoms such as fever, night sweats, or weight loss. Pathology typically shows large atypical lymphoid cells; clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents anaplastic large cell lymphoma and specifically states ALK-negative. It is also appropriate when pathology or oncology notes confirm ALK-negative disease and no more specific site or subtype is documented.
If the record only says “anaplastic large cell lymphoma” without ALK status, check documentation before assigning C84.7. You should code the documented diagnosis, not assume ALK-negative from a generic lymphoma label.
Do not use for
Do not use C84.7 for ALK-positive anaplastic large cell lymphoma or for other non-Hodgkin lymphomas. Check documentation if the diagnosis is uncertain, mixed, or described only as “lymphoma.”
Coding tip
Confirm ALK-negative status in the pathology or oncology note before coding C84.7.