Z28.39
BillableOther underimmunization status
Z28.39 is the ICD-10-CM code for Other underimmunization status. It is a billable, specific code valid for reimbursement.
Z00-Z99 Factors influencing health status and contact with health services
Includes
- •Delinquent immunization status
- •Lapsed immunization schedule status
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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