Z28.3 Non-Billable Code
Underimmunization status
Effective From: 10/01/2016
Effective To: 03/31/2022
Chapter Classification
Chapter 21
Factors influencing health status and contact with health services (Z00-Z99)
Section Detail
Z20-Z29
Persons with potential health hazards related to communicable diseases (Z20-Z29)
Code Hierarchy
This code is a child of Z28.
As a non-billable code, it requires more specific digits to be used on a medical claim.
As a non-billable code, it requires more specific digits to be used on a medical claim.
Coding Guidelines & Notes
useAdditionalCode
- 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-)
More Specific Diagnosis Codes
This code is not billable as it requires a higher level of specificity. Select a more specific code below.
OPPS Editing Flags
External Cause
No
Mental Health
No
Manifestation (Edit 89)
No
Code First Applicable This code represents a manifestation of an underlying disease. The underlying condition must be coded first as the principal diagnosis.
No
Unacceptable PDX (Edit 113)
Yes
PDX Exclusion Logic
- OPPS Required: Yes
- Bill Type Override: No
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