Immunization not carried out for unspecified reason
Billable / specificPOA exempt
Z28.9 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.
Inclusion terms
Includes (from Z28)
- vaccination not carried out
- Note: Z codes represent reasons for encounters. A corresponding procedure code must accompany a Z code if a procedure is performed. Categories Z00-Z99 are provided for occasions when circumstances other than a disease, injury or external cause classifiable to categories A00-Y89 are recorded as 'diagnoses' or 'problems'. This can arise in two main ways:
- Note: (a) When a person who may or may not be sick encounters the health services for some specific purpose, such as to receive limited care or service for a current condition, to donate an organ or tissue, to receive prophylactic vaccination (immunization), or to discuss a problem which is in itself not a disease or injury.
- Note: (b) When some circumstance or problem is present which influences the person's health status but is not in itself a current illness or injury.
Code also
An additional code may be needed.
Also known as
- Delay, delayed, vaccination
- Immunization, not done
- Vaccination, delayed
Parent code
- Z28Immunization not carried out and underimmunization statusHeader
Related codes
- Z28.0Immunization not carried out because of contraindicationHeader
- Z28.1Immunization not carried out because of patient decision for reasons of belief or group pressureBillable
- Z28.2Immunization not carried out because of patient decision for other and unspecified reasonHeader
- Z28.3Underimmunization statusHeader
- Z28.8Immunization not carried out for other reasonHeader