Summary & Overview
HCPCS G9820: Chlamydia Screening Test Documentation with Follow-Up
HCPCS Level II code G9820 denotes documentation of a chlamydia screening test with appropriate follow-up and captures a discrete preventive screening and follow-up documentation activity. This code is relevant nationally as chlamydia is a common sexually transmitted infection and standardized documentation supports quality measurement, public health reporting, and appropriate continuity of care. Payers use such codes to track screening rates, ensure adherence to preventive care guidelines, and monitor follow-up timeliness.
Key payers included in this review are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The publication summarizes coverage patterns, common clinical contexts where the code is used, and operational considerations for billing and documentation. Where payer-specific policy details are not available in the input, readers are informed that data is not available in the input.
Readers will learn the clinical intent of the code, typical sites of service where it is applied (outpatient and ambulatory settings such as primary care and sexual health clinics), and the administrative role the code plays in preventive care workflows. The report also outlines what is available regarding benchmarks and policy updates — noting when input data is missing — and provides context for how G9820 fits into broader screening and quality measurement programs.
Billing Code Overview
HCPCS Level II code G9820 represents documentation of a chlamydia screening test with proper follow-up. The code describes services related to performing a chlamydia screening and recording appropriate follow-up actions based on results.
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Service type: Preventive screening and follow-up counseling/documentation
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Typical site of service: Outpatient and ambulatory care settings, including primary care clinics, sexual health clinics, and community health centers
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A sexually active 22-year-old female presents to a primary care clinic for an annual well visit and requests sexually transmitted infection screening. The clinician documents patient history of new sexual partner within the past 3 months and intermittent lower abdominal discomfort. A nucleic acid amplification test (NAAT) for Chlamydia trachomatis is ordered with instructions for specimen collection (cervical swab during pelvic exam or first-catch urine if no pelvic exam). The visit includes counseling about test implications and documented follow-up plan: positive results will prompt timely treatment and partner notification; negative results will be documented with routine screening recommendation intervals. Specimen is sent to the laboratory, results are reviewed in the electronic health record, and the clinician documents the follow-up outreach attempt when results are positive or when additional management is required. Typical workflow steps:
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Patient history and risk assessment performed by primary care clinician or sexual health nurse.
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Specimen collected (cervical/vaginal swab or first-catch urine) per NAAT protocol.
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Laboratory processing and return of result to ordering provider.
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Provider documents test result, communicates with patient, and documents appropriate follow-up (treatment, partner therapy, retesting interval).
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Billing for chlamydia screening and documentation of follow-up captured under
G9820when documentation of the screening test with proper follow-up is recorded.