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2. ICD-10 Codes
3. Chapter - Z00-Z99
4. Section - Z20-Z29
5. Category - Z28
6. Z28.20

Z28.20 - Immunization not carried out because of patient decision for unspecified reason

• Applicable to Immunization not carried out because of patient decision for unspecified reason
• The 2025 edition of ICD10-CM Z28.20 became effective on October 1, 2024.
• This is the American ICD10-CM version of Z28.20 - other international versions of ICD10 Z28.20 may differ.
• Z28.20 is a Billable / Specific ICD10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

The following codes above Z28.20 contain annotation back-references that may be applicable to Z28.20:

• Chapter: Z00-Z99 - Factors influencing health status and contact with health services
• Section: Z20-Z29 - Persons with potential health hazards related to communicable diseases
• Category: Z28 - Immunization not carried out and underimmunization status

Browse other similar CM codes:

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.