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C84.A

Non-billable

Cutaneous T-cell lymphoma, unspecified

C84.A is the ICD-10-CM code for Cutaneous T-cell lymphoma, unspecified. It is a non-billable category code — use a more specific child code such as C84.A0 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.A?
C84.A is the ICD-10-CM code for "Cutaneous T-cell lymphoma, unspecified". It falls under C00-D49 Neoplasms.
Is C84.A a billable code?
No — C84.A is a non-billable header code. Use a more specific child code (such as C84.A0) for billing.
What are the subcodes of C84.A?
C84.A has 11 more specific child codes, including C84.A0, C84.A1, C84.A2.

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

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