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T50.Z

Non-billable

Poisoning by, adverse effect of and underdosing of other vaccines and biological substances

T50.Z is the ICD-10-CM code for Poisoning by, adverse effect of and underdosing of other vaccines and biological substances. It is a non-billable category code — use a more specific child code such as T50.Z1 for billing.

Status
Header (non-billable)
Chapter
S00-T88
Parent
T50
Subcodes
2
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 T50.Z?
T50.Z is the ICD-10-CM code for "Poisoning by, adverse effect of and underdosing of other vaccines and biological substances". It falls under S00-T88 Injury, poisoning and certain other consequences of external causes.
Is T50.Z a billable code?
No — T50.Z is a non-billable header code. Use a more specific child code (such as T50.Z1) for billing.
What are the subcodes of T50.Z?
T50.Z has 2 more specific child codes, including T50.Z1, T50.Z9.

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

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