T50.A1
Non-billablePoisoning by, adverse effect of and underdosing of pertussis vaccine, including combinations with a pertussis component
T50.A1 is the ICD-10-CM code for Poisoning by, adverse effect of and underdosing of pertussis vaccine, including combinations with a pertussis component. It is a non-billable category code — use a more specific child code such as T50.A11 for billing.
S00-T88 Injury, poisoning and certain other consequences of external causes
No additional coding notes for this code.
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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