ICD-10 Logo
ICDxICD-10 Medical Coding
ICD-10 Logo
ICDxICD-10 Medical Coding
ICD 10 CodesDiagnoses
ICD 10 CodesDiagnoses
ICD-10 Logo
ICDxICD-10 Medical Coding

Comprehensive ICD-10-CM code reference with AI-powered search capabilities.

© 2025 ICD Code Compass. All rights reserved.

Browse

  • All Chapters
  • All Categories
  • Diagnoses

Tools

  • AI Code Search
ICD-10-CM codes are maintained by the CDC and CMS. This tool is for reference purposes only.
v1.0.0
ICD-10 Guide
ICD-10 CodesZ28.83

Z28.83

Immunization not carried out due to unavailability of vaccine

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/12/2025

Code Description

ICD-10 Z28.83 is a billable code used to indicate a diagnosis of immunization not carried out due to unavailability of vaccine.

Key Diagnostic Point:

Z28.83 is used when an immunization is not administered due to the unavailability of the vaccine. This situation can arise from various factors, including supply chain issues, public health emergencies, or vaccine shortages. The inability to receive vaccinations can significantly impact an individual's health status, particularly in vulnerable populations. Social determinants such as socioeconomic status, access to healthcare facilities, and community health resources play a crucial role in vaccination rates. Preventive care is essential in reducing the incidence of vaccine-preventable diseases, and understanding the barriers to immunization can help healthcare providers address these issues effectively. This code is particularly relevant in preventive care settings, where tracking immunization status is vital for maintaining public health and ensuring community immunity.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Documentation of vaccine availability issues
  • Understanding of public health guidelines
  • Differentiation from other Z codes related to immunization
  • Impact of social determinants on vaccine access

Audit Risk Factors

  • Inadequate documentation of vaccine unavailability
  • Failure to link to appropriate preventive care encounters
  • Misuse of Z28.83 when other Z codes are more appropriate
  • Lack of evidence for social determinants impacting immunization

Specialty Focus

Medical Specialties

Primary Care

Documentation Requirements

Documentation should include patient history, reasons for vaccine unavailability, and any attempts made to obtain the vaccine.

Common Clinical Scenarios

Routine checkups where immunizations are due but not administered due to vaccine shortages.

Billing Considerations

Consideration of social determinants such as transportation issues or lack of access to healthcare facilities.

Public Health

Documentation Requirements

Documentation should include population-level data on vaccine availability and tracking of immunization rates.

Common Clinical Scenarios

Epidemiological studies assessing the impact of vaccine shortages on community health.

Billing Considerations

Focus on health equity and addressing barriers to immunization in underserved populations.

Coding Guidelines

Inclusion Criteria

Use Z28.83 When
  • Z codes are used to indicate reasons for encounters that are not primarily disease
  • related
  • 83 should be sequenced appropriately, often following a primary diagnosis related to preventive care
  • Payer requirements may vary, so it is essential to check specific guidelines for coverage of preventive services

Exclusion Criteria

Do NOT use Z28.83 When
No specific exclusions found.

Related CPT Codes

90460CPT Code

Immunization administration

Clinical Scenario

Used when documenting the administration of vaccines that are available.

Documentation Requirements

Documentation of vaccine type, dosage, and administration details.

Specialty Considerations

Primary care providers must ensure accurate records of administered vaccines.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for greater specificity in coding, enabling better tracking of immunization issues related to availability, which can inform public health initiatives.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for greater specificity in coding, enabling better tracking of immunization issues related to availability, which can inform public health initiatives.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for greater specificity in coding, enabling better tracking of immunization issues related to availability, which can inform public health initiatives.

Resources

Clinical References

  • •
    CDC Immunization Guidelines

Coding & Billing References

  • •
    CDC Immunization Guidelines

Frequently Asked Questions

What should I document if a vaccine is unavailable?

Document the specific vaccine that was unavailable, the reason for the unavailability, and any alternative plans for immunization.