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ICD-10-CM Codes
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Z00-Z99
Factors influencing health status and contact with health services
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Z20-Z29
Persons with potential health hazards related to communicable diseases
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Z28-
Immunization not carried out and underimmunization status
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2022 ICD-10-CM Diagnosis Code Z28.39
2022 ICD-10-CM Diagnosis Code Z28.39
Other underimmunization status
2022 - New Code Billable/Specific Code POA Exempt
- Z28.39 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- ICD-10-CM Z28.39 is a new 2022 ICD-10-CM code that became effective on October 1, 2021.
- This is the American ICD-10-CM version of Z28.39 - other international versions of ICD-10 Z28.39 may differ.
Applicable To- Delinquent immunization status
- Lapsed immunization schedule status
The following code(s) above
Z28.39 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
- Applicable To annotations, or
- Code Also annotations, or
- Code First annotations, or
- Excludes1 annotations, or
- Excludes2 annotations, or
- Includes annotations, or
- Note annotations, or
- Use Additional annotations
that may be applicable to
Z28.39:
- Z00-Z99
2022 ICD-10-CM Range Z00-Z99
Factors influencing health status and contact with health servicesNote- 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:
- (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.
- (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.
- Z28
ICD-10-CM Diagnosis Code Z28
Immunization not carried out and underimmunization status
2016 2017 2018 2019 2020 2021 2022 Non-Billable/Non-Specific Code
Code Also- , if applicable, encounter for immunization safety counseling (Z71.85)
Includes- vaccination not carried out
- Z28.3
ICD-10-CM Diagnosis Code Z28.3
Underimmunization status
2016 2017 2018 2019 2020 2021 2022 - Converted to Parent Code Non-Billable/Non-Specific Code
Use Additional- code, if applicable, to identify:
- immunization not carried out because of contraindication (Z28.0-)
- immunization not carried out because of patient decision for other and unspecified reason (Z28.2-)
- immunization not carried out because of patient decision for reasons of belief or group pressure (Z28.1)
- immunization not carried out for other reason (Z28.8-)
POA Help
"Present On Admission" is defined as present at the time the order for inpatient admission occurs — conditions that develop during an outpatient encounter, including emergency department, observation, or outpatient surgery, are considered POA.
- Z28.39 is considered exempt from POA reporting.
ICD-10-CM Z28.39 is grouped within Diagnostic Related Group(s) (MS-DRG v39.0):
- 951 Other factors influencing health status
Code History
- 2022 (effective 10/1/2021): New code
ICD-10-CM Codes Adjacent To Z28.39
Z28.09 Immunization not carried out because of other contraindication
Z28.1 Immunization not carried out because of patient decision for reasons of belief or group pressure
Z28.2 Immunization not carried out because of patient decision for other and unspecified reason
Z28.20 Immunization not carried out because of patient decision for unspecified reason
Z28.21 Immunization not carried out because of patient refusal
Z28.29 Immunization not carried out because of patient decision for other reason
Z28.3 Underimmunization status
Z28.31 Underimmunization for COVID-19 status
Z28.311 Partially vaccinated for COVID-19
Z28.39
Other underimmunization status
Z28.8 Immunization not carried out for other reason
Z28.81 Immunization not carried out due to patient having had the disease
Z28.82 Immunization not carried out because of caregiver refusal
Z28.83 Immunization not carried out due to unavailability of vaccine
Z28.89 Immunization not carried out for other reason
Z28.9 Immunization not carried out for unspecified reason
Z29 Encounter for other prophylactic measures
Z29.1 Encounter for prophylactic immunotherapy
Z29.11 …… for respiratory syncytial virus (RSV)
Z29.12 Encounter for prophylactic antivenin
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.
