Loading...

    Explore
    • Policy Monitoring
    • Live Policy Feed
    • Billing Codes
    • NPI Medicare & Medicaid
    • Healthcare Providers
    • Health Insurance Payers
    • States
    • Service Lines
    • Taxonomy Codes
    Lookup tools
    • Billing Code Lookup
    • CPT Modifier Lookup
    • Provider Taxonomy Code Lookup
    • Healthcare Provider & Facility Lookup
    • Health Insurance Payer Lookup
    • Payer Contact Directory

    Policy & Benchmark Tools

    • Prior Authorization Lookup
    • Coverage Criteria Lookup
    • Timely Filing Lookup
    • Billing Code Reimbursement Rates
    • Payer Comparison Dashboard
    • Facility Comparison Dashboard
    • All tools

    Company

    • About OpenPayer
    • Data Sources
    • Trek Health
    OpenPayerby Trek Health
    LinkedInYouTube

    © 2026 Trek Health. All rights reserved.

    OpenPayer is built and maintained by Trek Health.

    v1.0.28
    OpenPayerBilling CodesPersons encountering health services for examinationsICD-10-CM z11-encounter-for-screening
    Ask Trek AI about this page

    ICD-10-CM Code For Encounter For Screening For Infectious And Parasitic Diseases: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group Z11 includes encounters for screening for infectious and parasitic diseases, covering assessments performed to detect infections in asymptomatic individuals or for public health surveillance. These ICD-10-CM diagnosis codes are used to document preventive screening services and the reason for testing, capturing the screening context rather than an established infection. Accurate coding within the ICD-10-CM Z11 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

    Customize your policy alerts

    Sign up for ICD-10-CM Code For Encounter For Screening For Infectious And Parasitic Diseases: Group Overview policy alerts

    Get alerted when relevant policies change without checking for updates manually.

    Monitor payer policy activity

    Receive email alerts as soon as relevant payer policies are published or updated.

    ICD-10-CM Z11: Encounter For Screening For Infectious And Parasitic Diseases Overview

    The diagnoses in this group represent encounters for screening tests for infectious and parasitic diseases, targeting communicable pathogens and public health surveillance. They cover asymptomatic individuals or those without a diagnosis who are being screened for infections such as hepatitis, human immunodeficiency virus, tuberculosis, and sexually transmitted infections. Accurate coding matters for reimbursement because it documents preventive services and supports correct claim adjudication and public health reporting.

    Table of contents

    Progress1 / 5

    Explore openpayer tools

    • Billing CodesCPT, HCPCS, DRG & more
    • Reimbursement RatesCommercial vs. Medicare rate reports
    • ProvidersHospitals & facilities
    • PayersPlans & market footprint
    • Taxonomy CodesNUCC specialty codes
    • ModifiersCPT modifiers & usage
    • Prior AuthorizationPA policies by payer & drug
    • Timely FilingFiling deadlines by payer
    • Coverage CriteriaMedical necessity by payer
    • Payer ContactsClaims, PA & appeals contacts
    View all tools

    When to Use

    Use a code from this group when an asymptomatic person or an individual without a diagnosed infection receives testing specifically for detection or surveillance of infectious agents. These codes apply when the clinical documentation reflects screening intent, such as routine public health screens, prenatal infectious disease screening, or screening following exposure.

    ICD-10-CM Codes

    12 rows

    ICD-10-CM CodeDescription
    Z11.0Encounter for screening for intestinal infectious diseases
    Z11.1Encounter for screening for respiratory tuberculosis
    Z11.2Encounter for screening for other bacterial diseases
    Z11.3Encounter for screening for infections with a predominantly sexual mode of transmission
    Z11.4Encounter for screening for human immunodeficiency virus [HIV]
    Z11.51Encounter for screening for human papillomavirus (HPV)
    Z11.52Encounter for screening for COVID-19
    Z11.59Encounter for screening for other viral diseases
    Z11.6Encounter for screening for other protozoal diseases and helminthiases
    Z11.7Encounter for testing for latent tuberculosis infection
    Z11.8Encounter for screening for other infectious and parasitic diseases
    Z11.9Encounter for screening for infectious and parasitic diseases, unspecified

    DRG Codes

    1 rows

    DRG CodeDescription
    951Other Factors Influencing Health Status

    Related Codes

    Z00-ENCOUNTER-FOR-GENERAL-EXAMINATION

    ICD-10-CM Code For Encounter For General Examination Without Complaint Suspected Or Reported Diagnosis: Group Overview

    Z01-ENCOUNTER-FOR-OTHER-SPECIAL-EXAMINATION

    ICD-10-CM Code For Encounter For Other Special Examination Without Complaint, Suspected Or Reported Diagnosis: Group Overview

    Z02-ENCOUNTER-FOR-ADMINISTRATIVE-EXAMINATION

    ICD-10-CM Code For Encounter For Administrative Examination: Group Overview

    Z03-ENCOUNTER-FOR-MEDICAL-OBSERVATION

    ICD-10-CM Code For Encounter For Medical Observation For Suspected Diseases And Conditions Ruled Out: Group Overview

    Z04-ENCOUNTER-FOR-EXAMINATION-AND-OBSERVATION

    ICD-10-CM Code For Encounter For Examination And Observation For Other Reasons: Group Overview

    Z05-ENCOUNTER-FOR-NEWBORN-OBSERVATION

    ICD-10-CM Code For Encounter For Observation And Evaluation Of Newborn For Suspected Diseases And Conditions Ruled Out: Group Overview

    Z08-ENCOUNTER-FOR-FOLLOW-UP-MALIGNANT-NEOPLASM

    ICD-10-CM Code For Encounter For Follow-Up Examination After Completed Treatment For Malignant Neoplasm: Group Overview

    Z09-ENCOUNTER-FOR-FOLLOW-UP

    ICD-10-CM Code For Encounter For Follow-Up Examination After Completed Treatment For Conditions Other Than Malignant Neoplasm: Group Overview

    Z12-ENCOUNTER-FOR-SCREENING-MALIGNANT-NEOPLASMS

    ICD-10-CM Code For Encounter For Screening For Malignant Neoplasms: Group Overview

    Z13-ENCOUNTER-FOR-SCREENING

    ICD-10-CM Code For Encounter For Screening For Other Diseases And Disorders: Group Overview

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
    Published by

    Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

    Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.