C84.01: Mycosis fungoides, lymph nodes of head, face, and neck
C84.01 is the billable ICD-10-CM diagnosis code for Mycosis fungoides, lymph nodes of head, face, and neck. It is a fully specified code, so it can be reported on a claim (subject to clinical documentation and your payer's rules).
Frequently asked questions
What is ICD-10-CM code C84.01?
C84.01 is the ICD-10-CM diagnosis code for Mycosis fungoides, lymph nodes of head, face, and neck. It belongs to category C84 (Mature T/NK-cell lymphomas).
Is C84.01 a billable code?
Yes. C84.01 is a billable, fully specified ICD-10-CM code, so it can be used on a claim (subject to documentation and payer rules).
What category does C84.01 belong to?
C84.01 is part of ICD-10-CM category C84 — Mature T/NK-cell lymphomas, which has 178 billable codes.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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