ICD-10-CM Z28.31: Underimmunization for COVID-19 status

Parent Code (Less Specific):

About ICD-10-CM Code Z28.31 (Underimmunization for COVID-19 status)

ICD-10-CM code Z28.31 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM Z28.31 became effective on October 1, 2024.

This page provides detailed information about Z28.31 - Underimmunization for COVID-19 status. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Underimmunization for COVID-19 status.