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T23.4

Non-billable

Corrosion of unspecified degree of wrist and hand

T23.4 is the ICD-10-CM code for Corrosion of unspecified degree of wrist and hand. It is a non-billable category code — use a more specific child code such as T23.40 for billing.

Status
Header (non-billable)
Chapter
S00-T88
Parent
T23
Subcodes
9
Edition
FY2026

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

Code first

  • •(T51-T65) to identify chemical and intent

Use additional code

  • •external cause code to identify place (Y92)

Frequently asked questions

What is ICD-10 code T23.4?
T23.4 is the ICD-10-CM code for "Corrosion of unspecified degree of wrist and hand". It falls under S00-T88 Injury, poisoning and certain other consequences of external causes.
Is T23.4 a billable code?
No — T23.4 is a non-billable header code. Use a more specific child code (such as T23.40) for billing.
What are the subcodes of T23.4?
T23.4 has 9 more specific child codes, including T23.40, T23.41, T23.42.

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

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