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T23.64

Non-billable

Corrosion of second degree of multiple fingers (nail), including thumb

T23.64 is the ICD-10-CM code for Corrosion of second degree of multiple fingers (nail), including thumb. It is a non-billable category code — use a more specific child code such as T23.641 for billing.

Status
Header (non-billable)
Chapter
S00-T88
Parent
T23.6
Subcodes
3
Edition
FY2026

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

No additional coding notes for this code.

Frequently asked questions

What is ICD-10 code T23.64?
T23.64 is the ICD-10-CM code for "Corrosion of second degree of multiple fingers (nail), including thumb". It falls under S00-T88 Injury, poisoning and certain other consequences of external causes.
Is T23.64 a billable code?
No — T23.64 is a non-billable header code. Use a more specific child code (such as T23.641) for billing.
What are the subcodes of T23.64?
T23.64 has 3 more specific child codes, including T23.641, T23.642, T23.649.

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

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