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T33.4

Non-billable

Superficial frostbite of arm

T33.4 is the ICD-10-CM code for Superficial frostbite of arm. It is a non-billable category code — use a more specific child code such as T33.40 for billing.

Status
Header (non-billable)
Chapter
S00-T88
Parent
T33
Subcodes
3
Edition
FY2026

S00-T88 Injury, poisoning and certain other consequences of external causes

Excludes2 — not included here

  • •superficial frostbite of wrist and hand (T33.5-)

Frequently asked questions

What is ICD-10 code T33.4?
T33.4 is the ICD-10-CM code for "Superficial frostbite of arm". It falls under S00-T88 Injury, poisoning and certain other consequences of external causes.
Is T33.4 a billable code?
No — T33.4 is a non-billable header code. Use a more specific child code (such as T33.40) for billing.
What are the subcodes of T33.4?
T33.4 has 3 more specific child codes, including T33.40, T33.41, T33.42.

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

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