CPT® Code 87811 is used to report infectious agent antigen testing for SARS-CoV-2 (COVID-19) using immunoassay techniques with direct optical observation. This test detects viral antigens, typically from nasal or nasopharyngeal specimens, providing rapid identification of active infection.
The test is widely used for diagnosis, screening, and infection control purposes in clinical and public health settings.
Key Facts About CPT® 87811
Service type: Laboratory antigen detection test
Provider type: Physicians, qualified healthcare professionals, and laboratory personnel
Medical services included: Yes—detection of SARS-CoV-2 antigen
Specimen type: Typically nasal or nasopharyngeal swabs
Test method: Immunoassay with direct optical reading
Common clinical indications:
- Symptomatic individuals suspected of COVID-19
- Screening of asymptomatic individuals in high-risk settings
- Rapid triage in emergency or urgent care settings
- Monitoring outbreaks in healthcare or congregate settings
- Pre-procedural or pre-admission testing
When to Use CPT® 87811
CPT 87811 is appropriate when:
- A SARS-CoV-2 antigen immunoassay with direct optical reading is performed
- The test is medically necessary for diagnosis, screening, or public health monitoring
- Specimens are collected from appropriate anatomical sites (nasal or nasopharyngeal)
- Results are used to guide patient management or infection control measures
Examples:
- Testing a symptomatic patient in an urgent care clinic for COVID-19
- Screening healthcare workers prior to shift start during an outbreak
- Pre-operative testing to ensure patient safety
- Conducting rapid COVID-19 testing in long-term care facilities
Documentation Requirements
To support CPT 87811 billing, documentation should include:
- Patient identifiers and date of service
- Specimen type and collection site
- Test method (immunoassay with direct optical reading)
- Clinical indication or medical necessity
- Test results and interpretation
- Ordering provider credentials and signature
- Laboratory performing the test
Accurate documentation ensures compliance, supports reimbursement, and enables effective patient management.
Reimbursement and Coding Considerations
- CPT 87811 is reimbursed as a SARS-CoV-2 antigen detection test
- Coverage depends on medical necessity, payer policies, and public health guidelines
- The test is often eligible for emergency or pandemic-related billing programs
- Specimen source and method must match CPT code requirements
- For multiple tests, each test should be coded separately if performed on distinct specimens
Proper coding and documentation ensure accurate reimbursement and compliance with regulatory guidance.
How OptiMantra Supports SARS-CoV-2 Antigen Testing
OptiMantra’s integrated EMR and practice management system streamlines ordering, documentation, and billing for CPT 87811:
With OptiMantra, providers can:
- Order SARS-CoV-2 antigen tests directly from the patient chart
- Record specimen type, collection site, and test method
- Document clinical indications, symptoms, and exposure history
- Capture results and integrate them into the patient’s longitudinal record
- Support accurate CPT and ICD-10 code selection for compliant laboratory billing
By centralizing SARS-CoV-2 testing workflows, OptiMantra helps practices improve efficiency, ensure compliance, and optimize reimbursement.
Try OptiMantra for free here!
Disclaimer: CPT® codes are maintained by the American Medical Association. This guide is for informational purposes only and does not replace official coding guidelines or payer policies.
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