T50.A2
⚠ Non-billable (Header)Poisoning by, adverse effect of and underdosing of mixed bacterial vaccines without a pertussis component
Injury, poisoning and certain other consequences of external causes (S00-T88)
⚠️ This is a category header code — not billable. Use a more specific child code below.
Child Codes (6)
Clinical Description
ICD-10-CM code T50.A2 represents poisoning by, adverse effect of and underdosing of mixed bacterial vaccines without a pertussis component. This code falls under the Injury, poisoning and certain other consequences of external causes (S00-T88) classification. It is a non-billable category header code. A more specific child code from the list below must be used for billing and reimbursement purposes.
This is a 6-character code at the 5th level of specificity. There are 6 more specific child codes under T50.A2.
Frequently Asked Questions
What is ICD-10 code T50.A2?
ICD-10-CM code T50.A2 is "Poisoning by, adverse effect of and underdosing of mixed bacterial vaccines without a pertussis component". It belongs to the category: Injury, poisoning and certain other consequences of external causes (S00-T88).
Is T50.A2 a billable ICD-10 code?
No, T50.A2 is a non-billable header code. A more specific child code must be used for billing.
Related Codes in T50.A
Other codes in the same category that may be relevant for differential coding:
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Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)