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C84.1

Non-billable

Sezary disease

C84.1 is the ICD-10-CM code for Sezary disease. It is a non-billable category code — use a more specific child code such as C84.10 for billing.

Status
Header (non-billable)
Chapter
C00-D49
Parent
C84
Subcodes
11
Edition
FY2026

C00-D49 Neoplasms

No additional coding notes for this code.

Frequently asked questions

What is ICD-10 code C84.1?
C84.1 is the ICD-10-CM code for "Sezary disease". It falls under C00-D49 Neoplasms.
Is C84.1 a billable code?
No — C84.1 is a non-billable header code. Use a more specific child code (such as C84.10) for billing.
What are the subcodes of C84.1?
C84.1 has 11 more specific child codes, including C84.10, C84.11, C84.12.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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