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87880

Rapid Group A Streptococcus (Strep A) Antigen Test

Code Description

CPT code 87880 is used to report a rapid antigen test that detects Group A Streptococcus (Strep A) using an immunoassay with direct visual observation. The test is commonly performed on a throat swab to quickly diagnose streptococcal pharyngitis (strep throat) in physician offices, urgent care centers, and other outpatient settings.

When to Use 87880

Common examples include:

  • Evaluation of sore throat

  • Suspected streptococcal pharyngitis

  • Pediatric respiratory illness

  • Urgent care visits

  • Primary care office testing

  • Point-of-care laboratory testing

  • Rapid diagnosis before antibiotic treatment

Documentation Requirements

Documentation should include:

  • Medical necessity for testing

  • Patient signs and symptoms

  • Ordering provider

  • Specimen source (throat swab)

  • Test result

  • Complete laboratory report

Examples
Example 1

A 10-year-old patient presents with fever, sore throat, and swollen tonsils. The physician performs a rapid Group A Streptococcus antigen test using a throat swab to determine whether antibiotics are indicated. CPT code 87880 is reported.

Example 2

An adult visits an urgent care clinic with painful swallowing and enlarged cervical lymph nodes. A rapid Strep A antigen test is performed during the office visit, making CPT code 87880 the appropriate code.

Common Billing Mistakes

Common billing mistakes include:

  • Reporting 87880 for molecular (PCR/NAAT) strep testing

  • Omitting modifier QW when required for CLIA-waived testing

  • Billing without documented medical necessity

  • Incorrect specimen documentation

  • Duplicate laboratory billing

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COVID-19 PCR Test

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85025

Complete Blood Count (CBC) With Automated Differential

FAQ

What does CPT code 87880 cover?

CPT code 87880 reports a rapid immunoassay test used to detect Group A Streptococcus antigen from a throat swab.

Is CPT 87880 a rapid strep test?

Yes. It is the CPT code used for a rapid Strep A antigen detection test performed with direct visual observation.

Does CPT 87880 require a throat swab?

Yes. The test is typically performed using a throat swab specimen to detect Group A Streptococcus.

When is CPT 87880 commonly performed?

It is commonly performed in primary care offices, pediatric clinics, urgent care centers, and emergency departments for patients with symptoms of strep throat.

Procedure Type

Microbiology

Test Type

Detection Method

Rapid Strep A Antigen Detection

Immunoassay With Direct Visual Observation