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v1.0.0
ICD-10 Guide
ICD-10 CodesZ22

Z22

Carrier of infectious disease

BILLABLE STATUSNo
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/05/2025

Code Description

ICD-10 Z22 is a used to indicate a diagnosis of carrier of infectious disease.

Key Diagnostic Point:

The ICD-10 code Z22, classified under the category of 'Carrier of infectious disease', is used to identify individuals who harbor an infectious agent without showing clinical symptoms of the disease. This category encompasses a variety of conditions where individuals may carry pathogens, such as bacteria or viruses, which can be transmitted to others. Common examples include carriers of tuberculosis, hepatitis B, and certain strains of streptococcus. Understanding the carrier status is crucial for public health management, as these individuals can pose a risk of spreading infections, particularly in high-risk environments such as healthcare settings or communal living situations.

  • The clinical significance of identifying carriers lies in the need for appropriate monitoring and preventive measures to control the spread of infectious diseases. Healthcare providers must be vigilant in recognizing carrier status, as it may influence treatment decisions, infection control practices, and patient education. Usage guidelines for Z22 codes emphasize the importance of accurate documentation of the carrier status, as well as the need for follow-up and potential interventions to mitigate the risk of transmission to others.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of infectious agents
  • Need for accurate patient history
  • Potential for asymptomatic presentation

Audit Risk Factors

  • Inadequate documentation of carrier status
  • Misclassification of symptomatic vs. asymptomatic patients
  • Failure to follow up on carrier management protocols

Specialty Focus

Medical Specialties

Infectious Disease

Documentation Requirements

Standard ICD-10-CM documentation requirements apply

Common Clinical Scenarios

Various clinical presentations within this specialty area

Billing Considerations

Follow specialty-specific billing guidelines

Public Health

Documentation Requirements

Standard ICD-10-CM documentation requirements apply

Common Clinical Scenarios

Various clinical presentations within this specialty area

Billing Considerations

Follow specialty-specific billing guidelines

Related Codes

Child Codes

25 codes
Z22.0
Carrier of typhoid
Z22.1
Carrier of other intestinal infectious diseases
Z22.2
Carrier of diphtheria
Z22.3
Carrier of other specified bacterial diseases
Z22.31
Carrier of bacterial disease due to meningococci
Z22.32
Carrier of bacterial disease due to staphylococci
Z22.321
Carrier or suspected carrier of Methicillin susceptible Staphylococcus aureus
Z22.322
Carrier or suspected carrier of Methicillin resistant Staphylococcus aureus
Z22.33
Carrier of bacterial disease due to streptococci
Z22.330
Carrier of Group B streptococcus
Z22.338
Carrier of other streptococcus
Z22.34
Carrier of Acinetobacter baumannii
Z22.340
Carrier of carbapenem-resistant Acinetobacter baumannii
Z22.341
Carrier of carbapenem-sensitive Acinetobacter baumannii
Z22.349
Carrier of Acinetobacter baumannii, unspecified
Z22.35
Carrier of Enterobacterales
Z22.350
Carrier of carbapenem-resistant Enterobacterales
Z22.358
Carrier of other Enterobacterales
Z22.359
Carrier of Enterobacterales, unspecified
Z22.39
Carrier of other specified bacterial diseases
Z22.4
Carrier of infections with a predominantly sexual mode of transmission
Z22.6
Carrier of human T-lymphotropic virus type-1 [HTLV-1] infection
Z22.7
Latent tuberculosis
Z22.8
Carrier of other infectious diseases
Z22.9
Carrier of infectious disease, unspecified

Related CPT Codes

CPT Code

Clinical Scenario

Documentation Requirements

CPT Code

Clinical Scenario

Documentation Requirements

CPT Code

Clinical Scenario

Documentation Requirements

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The clinical and administrative impact of the Z22 code category is significant, particularly in the context of public health and infection control. Identifying carriers of infectious diseases allows healthcare providers to implement targeted interventions to prevent outbreaks and protect vulnerable populations. This proactive approach can lead to improved health outcomes and reduced transmission rates within communities.
From an administrative perspective, accurate coding of carrier status is essential for quality measures and population health tracking. It enables healthcare organizations to monitor trends in infectious disease prevalence and implement strategies to address public health concerns. As healthcare continues to evolve, the emphasis on managing infectious disease carriers will likely increase, highlighting the importance of accurate coding and comprehensive patient management.

ICD-9 vs ICD-10

The clinical and administrative impact of the Z22 code category is significant, particularly in the context of public health and infection control. Identifying carriers of infectious diseases allows healthcare providers to implement targeted interventions to prevent outbreaks and protect vulnerable populations. This proactive approach can lead to improved health outcomes and reduced transmission rates within communities. From an administrative perspective, accurate coding of carrier status is essential for quality measures and population health tracking. It enables healthcare organizations to monitor trends in infectious disease prevalence and implement strategies to address public health concerns. As healthcare continues to evolve, the emphasis on managing infectious disease carriers will likely increase, highlighting the importance of accurate coding and comprehensive patient management.

Reimbursement & Billing Impact

Reimbursement may depend on the documentation of the carrier status and the medical necessity of any tests or follow-up treatments. It is essential to ensure that all relevant information is included in the patient's medical record to support the use of Z22 codes. Additionally, providers should be aware of payer-specific guidelines that may affect reimbursement for services related to carriers of infectious diseases.

Resources

Clinical References

  • •
    Official ICD-10 Guidelines for Z22

Coding & Billing References

  • •
    Official ICD-10 Guidelines for Z22

Frequently Asked Questions

What conditions are included in Z22?

Z22 includes conditions where individuals are carriers of infectious agents, such as tuberculosis, hepatitis B, and certain bacterial infections without showing symptoms.

When should I use Z22 codes?

Z22 codes should be used when a patient is identified as a carrier of an infectious disease, particularly when there is a need to monitor their health status or prevent transmission to others.

What documentation is required for Z22?

Documentation must include confirmation of carrier status through laboratory tests or clinical evaluation, as well as any relevant patient history and follow-up plans.