ICD-10 Code C84.62 – Anaplastic large cell lymphoma, ALK-positive, intrathoracic lymph nodes (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C84.62 – Anaplastic large cell lymphoma, ALK-positive, intrathoracic lymph nodes
What it is
This code identifies anaplastic large cell lymphoma that is ALK-positive and documented as involving intrathoracic lymph nodes. Use it when the diagnosis specifically names this lymphoma subtype and nodal site.
Clinical signs
Clinical features vary; refer to documentation. Typical lymphoma findings may include enlarged lymph nodes, systemic “B” symptoms, or imaging evidence of thoracic nodal disease, but the coded diagnosis must be explicitly stated.
When to use this code
Use C84.62 when the provider documents ALK-positive anaplastic large cell lymphoma in intrathoracic lymph nodes, such as mediastinal or hilar nodal involvement. It is appropriate for confirmed diagnoses in outpatient, inpatient, or problem-list coding. If the site or ALK status is not specified, check documentation.
Do not use for
Do not use this code for unspecified lymphoma, ALK-negative disease, or lymphoma limited to a different anatomic site. If the record does not confirm intrathoracic nodal involvement, check documentation.
Coding tip
Verify both the ALK-positive status and the intrathoracic lymph node site before assigning this code.