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 CodesZ11

Z11

Encounter for screening for infectious and parasitic diseases

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

Code Description

ICD-10 Z11 is a used to indicate a diagnosis of encounter for screening for infectious and parasitic diseases.

Key Diagnostic Point:

The ICD-10 Level 1 Category code Z11 represents encounters for screening for infectious and parasitic diseases. This category encompasses a variety of screenings aimed at early detection of infectious diseases, which can include viral, bacterial, and parasitic infections. Conditions covered under this category may include screenings for tuberculosis, sexually transmitted infections, and other communicable diseases. The clinical significance of these screenings lies in their ability to identify asymptomatic infections, allowing for timely intervention and treatment, thereby reducing morbidity and mortality associated with these diseases.

  • Usage guidelines for Z11 codes indicate that they should be applied when a patient is undergoing screening procedures, even in the absence of symptoms. This ensures that healthcare providers can monitor and manage potential health risks effectively. Additionally, the use of Z11 codes can facilitate public health initiatives aimed at controlling the spread of infectious diseases, contributing to overall community health improvement. Proper coding and documentation are essential to ensure accurate reporting and reimbursement for these preventive services.

Code Complexity Analysis

Complexity Rating: Low

Low Complexity

Complexity Factors

  • Simplicity of coding
  • Clear guidelines for usage
  • Limited documentation requirements

Audit Risk Factors

  • Inadequate documentation of screening rationale
  • Misuse of Z11 codes for symptomatic patients
  • Failure to follow up on screening results

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

Primary Care

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

13 codes
Z11.0
Encounter for screening for intestinal infectious diseases
Z11.1
Encounter for screening for respiratory tuberculosis
Z11.2
Encounter for screening for other bacterial diseases
Z11.3
Encounter for screening for infections with a predominantly sexual mode of transmission
Z11.4
Encounter for screening for human immunodeficiency virus [HIV]
Z11.5
Encounter for screening for other viral diseases
Z11.51
Encounter for screening for human papillomavirus (HPV)
Z11.52
Encounter for screening for COVID-19
Z11.59
Encounter for screening for other viral diseases
Z11.6
Encounter for screening for other protozoal diseases and helminthiases
Z11.7
Encounter for testing for latent tuberculosis infection
Z11.8
Encounter for screening for other infectious and parasitic diseases
Z11.9
Encounter for screening for infectious and parasitic diseases, unspecified

Related CPT Codes

CPT Code

Clinical Scenario

Documentation Requirements

CPT Code

Clinical Scenario

Documentation Requirements

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 impact of Z11 codes is significant as they promote early detection and management of infectious diseases, which is crucial for improving patient outcomes and controlling outbreaks. By facilitating screenings, healthcare providers can identify at-risk populations and implement preventive measures, ultimately contributing to better public health. The administrative impact includes the necessity for accurate coding and documentation practices, which are essential for compliance and reimbursement.
In terms of population health, the use of Z11 codes aligns with broader healthcare trends that emphasize preventive care and early intervention. As healthcare systems increasingly focus on value-based care, the ability to track and report screenings for infectious diseases becomes vital for quality measures and health outcomes. This category not only supports individual patient care but also enhances community health initiatives aimed at reducing the prevalence of infectious diseases.

ICD-9 vs ICD-10

The clinical impact of Z11 codes is significant as they promote early detection and management of infectious diseases, which is crucial for improving patient outcomes and controlling outbreaks. By facilitating screenings, healthcare providers can identify at-risk populations and implement preventive measures, ultimately contributing to better public health. The administrative impact includes the necessity for accurate coding and documentation practices, which are essential for compliance and reimbursement. In terms of population health, the use of Z11 codes aligns with broader healthcare trends that emphasize preventive care and early intervention. As healthcare systems increasingly focus on value-based care, the ability to track and report screenings for infectious diseases becomes vital for quality measures and health outcomes. This category not only supports individual patient care but also enhances community health initiatives aimed at reducing the prevalence of infectious diseases.

Reimbursement & Billing Impact

reimbursement.

Resources

Clinical References

  • •
    Official ICD-10 Guidelines for Z11

Coding & Billing References

  • •
    Official ICD-10 Guidelines for Z11

Frequently Asked Questions

What conditions are included in Z11?

Z11 codes cover encounters for screening for various infectious diseases, including but not limited to tuberculosis, sexually transmitted infections, and other communicable diseases that require preventive screening.

When should I use Z11 codes?

Z11 codes should be used when a patient is undergoing a screening for infectious diseases, regardless of whether they exhibit symptoms. This includes routine screenings recommended by public health guidelines.

What documentation is required for Z11?

Documentation should include the reason for the screening, the type of screening performed, and any relevant patient history that supports the need for screening. It is important to maintain clear records to justify the use of Z11 codes.