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T42.8

Non-billable

Poisoning by, adverse effect of and underdosing of antiparkinsonism drugs and other central muscle-tone depressants

T42.8 is the ICD-10-CM code for Poisoning by, adverse effect of and underdosing of antiparkinsonism drugs and other central muscle-tone depressants. It is a non-billable category code — use a more specific child code such as T42.8X for billing.

Status
Header (non-billable)
Chapter
S00-T88
Parent
T42
Subcodes
1
Edition
FY2026

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

Includes

  • •Poisoning by, adverse effect of and underdosing of amantadine

Frequently asked questions

What is ICD-10 code T42.8?
T42.8 is the ICD-10-CM code for "Poisoning by, adverse effect of and underdosing of antiparkinsonism drugs and other central muscle-tone depressants". It falls under S00-T88 Injury, poisoning and certain other consequences of external causes.
Is T42.8 a billable code?
No — T42.8 is a non-billable header code. Use a more specific child code (such as T42.8X) for billing.
What are the subcodes of T42.8?
T42.8 has 1 more specific child code, including T42.8X.

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

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