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T50.A16

Non-billable

Underdosing of pertussis vaccine, including combinations with a pertussis component

T50.A16 is the ICD-10-CM code for 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.A16A for billing.

Status
Header (non-billable)
Chapter
S00-T88
Parent
T50.A1
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 T50.A16?
T50.A16 is the ICD-10-CM code for "Underdosing of pertussis vaccine, including combinations with a pertussis component". It falls under S00-T88 Injury, poisoning and certain other consequences of external causes.
Is T50.A16 a billable code?
No — T50.A16 is a non-billable header code. Use a more specific child code (such as T50.A16A) for billing.
What are the subcodes of T50.A16?
T50.A16 has 3 more specific child codes, including T50.A16A, T50.A16D, T50.A16S.

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

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