ICD-10 Code C84.71 – Anaplastic Large Cell Lymphoma, ALK-Negative, Lymph Nodes of Head, Face, and Neck (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C84.71 – Anaplastic large cell lymphoma, ALK-negative, lymph nodes of head, face, and neck
What it is
This code identifies anaplastic large cell lymphoma that is ALK-negative and located in lymph nodes of the head, face, or neck. Use it when documentation specifies both the lymphoma subtype and the nodal site.
Clinical signs
Typical findings include enlarged lymph nodes in the head, face, or neck region, with pathology confirming anaplastic large cell lymphoma and ALK negativity. Clinical features vary; refer to documentation.
When to use this code
Use C84.71 when the record clearly states ALK-negative anaplastic large cell lymphoma involving lymph nodes of the head, face, or neck. It may appear in pathology reports, oncology notes, or discharge summaries. If the site is different or not documented, check documentation.
Do not use for
Do not use this code for ALK-positive anaplastic large cell lymphoma, other lymphoma types, or disease outside the specified lymph node region. If the diagnosis is uncertain or the site is not stated, check documentation.
Coding tip
Assign the code only when both ALK-negative status and the exact nodal location are documented.