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ICD-10 Guide
ICD-10 CodesZ11.8

Z11.8

Encounter for screening for other infectious and parasitic diseases

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

Code Description

ICD-10 Z11.8 is a billable code used to indicate a diagnosis of encounter for screening for other infectious and parasitic diseases.

Key Diagnostic Point:

Z11.8 is utilized during encounters specifically aimed at screening for various infectious and parasitic diseases not classified elsewhere. This code is crucial in preventive healthcare, as it allows healthcare providers to identify potential health risks before they manifest into more serious conditions. The screening process can be influenced by social determinants of health such as socioeconomic status, access to healthcare, and education level, which can affect an individual's likelihood of undergoing screening. Preventive care initiatives often target populations at higher risk for certain infections, emphasizing the importance of routine screenings in primary care settings. Documentation must reflect the rationale for screening, the specific tests performed, and any relevant patient history to ensure accurate coding and reimbursement.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of infectious diseases that may require screening
  • Need for comprehensive patient history and risk assessment
  • Documentation of social determinants influencing screening decisions
  • Potential for overlapping codes with other Z codes

Audit Risk Factors

  • Inadequate documentation of the screening rationale
  • Failure to link the Z code to the appropriate preventive service
  • Use of the code without a corresponding clinical encounter
  • Inconsistent application of social determinants in documentation

Specialty Focus

Medical Specialties

Primary Care

Documentation Requirements

Documentation must include the patient's risk factors, the specific infectious diseases screened for, and the results of any tests performed.

Common Clinical Scenarios

Routine checkups where screenings for diseases like tuberculosis or hepatitis are performed.

Billing Considerations

Consideration of social determinants such as housing stability, employment status, and access to healthcare services.

Public Health

Documentation Requirements

Documentation should include population health data, surveillance results, and community health assessments.

Common Clinical Scenarios

Epidemiological studies assessing the prevalence of infectious diseases in specific populations.

Billing Considerations

Focus on health equity and addressing barriers to screening in underserved communities.

Coding Guidelines

Inclusion Criteria

Use Z11.8 When
  • Z codes should be used when a patient is seeking care for preventive services
  • 8 should be sequenced appropriately, typically as a secondary diagnosis following the primary reason for the encounter
  • Payer requirements may vary, so it is essential to verify coverage for preventive screenings

Exclusion Criteria

Do NOT use Z11.8 When
No specific exclusions found.

Related CPT Codes

86580CPT Code

Tuberculosis skin test

Clinical Scenario

Used in conjunction with Z11.8 when screening for tuberculosis.

Documentation Requirements

Document the reason for the test and the results.

Specialty Considerations

Primary care providers should ensure that the screening aligns with patient risk factors.

86803CPT Code

Hepatitis C antibody test

Clinical Scenario

Used when screening for hepatitis C in at-risk populations.

Documentation Requirements

Document the patient's risk factors and test results.

Specialty Considerations

Public health initiatives may require additional reporting.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for greater specificity in coding, which enhances the ability to track and analyze screening practices for infectious diseases. Z11.8 provides a mechanism for capturing encounters that may have previously been underreported.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for greater specificity in coding, which enhances the ability to track and analyze screening practices for infectious diseases. Z11.8 provides a mechanism for capturing encounters that may have previously been underreported.

Reimbursement & Billing Impact

reimbursement.

Resources

Clinical References

  • •
    CDC Guidelines for Infectious Disease Screening
  • •
    Preventive Services Task Force Recommendations

Coding & Billing References

  • •
    CDC Guidelines for Infectious Disease Screening
  • •
    Preventive Services Task Force Recommendations

Frequently Asked Questions

When should Z11.8 be used?

Z11.8 should be used during encounters specifically for screening for infectious and parasitic diseases not classified elsewhere, ensuring that the documentation supports the need for screening based on patient risk factors.