Modifier 92 (Alternative Laboratory Platform Testing) is used to identify laboratory testing performed using a kit or transportable instrument that wholly or partially consists of a single-use disposable analytical chamber rather than a conventional laboratory analyzer.

This modifier was introduced primarily to support rapid point-of-care laboratory testing, particularly rapid HIV testing, although its use has expanded to include specific laboratory procedures designated by CPT®. The defining characteristic is the testing platform, not merely the location where the test is performed. A test performed in a physician’s office does not automatically qualify for Modifier 92 unless the testing methodology meets the CPT® definition.

Modifier Number

Modifier Name

Alternative Laboratory Platform Testing

Note: The official CPT® descriptor is maintained by the American Medical Association (AMA). Always refer to the current licensed CPT® codebook for the official wording.

Plain English Explanation

Modifier 92 tells the payer:

“This laboratory test was performed using a portable, kit-based, or transportable testing platform that utilizes a disposable analytical chamber instead of a traditional laboratory analyzer.”

Purpose of Modifier 92

Modifier 92 is used to:

Identify laboratory testing performed using an alternative testing platform.
Distinguish rapid point-of-care testing from conventional laboratory testing.
Support accurate claims processing.
Identify eligible rapid laboratory testing methods.
Comply with CPT® and payer reporting requirements.

Understanding Modifier 92

Modifier 92 applies when laboratory testing is performed using:

Portable testing devices.
Single-use disposable testing cartridges.
Rapid test kits.
Hand-carried analytical instruments.
Transportable diagnostic equipment.

The testing system:

Does not require permanent laboratory space.
May be transported to the patient’s location.
Produces immediate laboratory results.
Uses disposable analytical chambers.

Importantly, the location alone does not determine whether Modifier 92 applies. The testing technology must meet the CPT® definition.

Common Tests Reported with Modifier 92

Historically, Modifier 92 has been associated with selected laboratory CPT® codes such as:

86701 – HIV-1 antibody
86702 – HIV-2 antibody
86703 – HIV-1 and HIV-2 single assay
87389 – HIV-1/HIV-2 antigen and antibody combination assay

Use Modifier 92 only when the CPT® code and testing methodology support its use. Always verify the current CPT® manual and payer guidance before reporting.

When to Use Modifier 92

Modifier 92 is appropriate when:

The laboratory test is performed using a qualifying alternative testing platform.
A disposable analytical chamber is used.
The test is performed using a portable or transportable instrument.
The CPT® code allows Modifier 92.
Documentation supports the testing methodology.

Common Examples

✔ Rapid HIV testing in a physician office.

✔ Portable HIV screening in community outreach.

✔ Emergency department rapid HIV testing.

✔ Mobile health clinic HIV testing.

✔ Public health screening programs using approved rapid test kits.

When NOT to Use Modifier 92

Do not use Modifier 92 when:

Testing is performed on a conventional laboratory analyzer.
Only the location changes but the laboratory methodology remains standard.
The CPT® code does not permit Modifier 92.
Routine chemistry, hematology, or pathology testing is performed using standard laboratory equipment.
The service is billed with HCPCS codes that do not recognize Modifier 92.

Medicare Rules

Medicare generally follows CPT® guidance for Modifier 92.

Key points include:

Modifier 92 is informational.
It identifies alternative laboratory platform testing, not medical necessity.
It applies only when the testing platform meets the CPT® definition.
It should be appended only to eligible laboratory CPT® codes.
Documentation should identify the testing platform used.

Commercial Insurance Rules

Commercial payer policies vary.

Many insurers:

Recognize Modifier 92.
Follow CPT® guidance.
Require documentation supporting the testing methodology.
May require CLIA-waived certification where applicable.
Review laboratory records during audits.

Always verify payer-specific laboratory billing requirements.

Documentation Requirements

Documentation should include:

Physician order.
Date of service.
Laboratory CPT® code.
Test performed.
Type of testing platform used.
Device or kit information.
Medical necessity.
Laboratory result.
CLIA information when applicable.
Provider signature.

Real Billing Examples

Example 1 – Rapid HIV Screening

A physician performs a rapid HIV screening using a CLIA-waived disposable cartridge-based testing device.

Billing

87389-92

Modifier 92 identifies the alternative laboratory testing platform.

Example 2 – Community Health Clinic

A mobile clinic performs rapid HIV testing using a portable analyzer with single-use disposable cartridges.

Modifier 92 is appropriate when CPT® guidance allows its use.

Example 3 – Emergency Department

An emergency physician orders immediate HIV screening before emergency surgery.

The laboratory uses a transportable rapid testing platform.

Modifier 92 may be reported if the CPT® code supports its use.

Example 4 – Incorrect Use

A hospital laboratory performs HIV testing on a conventional automated analyzer.

Modifier 92 should NOT be reported, because the testing platform does not meet the CPT® definition of an alternative laboratory platform.

CMS-1500 Claim Example

Field	Example
CPT Code	87389-92
Modifier	92
Diagnosis Pointer	Appropriate ICD-10-CM diagnosis
Units	1

Billing Example

Provider	CPT® Code
Physician Office	87389-92

Common Denial Reasons

Modifier 92 appended to an ineligible CPT® code.
Conventional laboratory equipment used instead of an alternative testing platform.
Missing documentation describing the testing device.
Incorrect modifier assignment.
Payer does not recognize Modifier 92 for the reported code.

How to Correct the Denial

Review the EOB or ERA.
Verify the CPT® code supports Modifier 92.
Confirm the testing platform meets the CPT® definition.
Submit documentation describing the testing device.
Include laboratory records if requested.
Appeal with supporting documentation when appropriate.

Coding Tips

Modifier 92 identifies how the laboratory test was performed—not where it was performed.
Verify that the laboratory methodology meets the CPT® definition.
Report Modifier 92 only with eligible laboratory CPT® codes.
Maintain documentation identifying the testing platform.
Follow payer-specific laboratory billing rules.

Modifier 92 vs Modifier 90

Modifier	Purpose
90	Laboratory test performed by an outside reference laboratory.
92	Laboratory test performed using an alternative laboratory platform.

Modifier 92 vs Modifier 91

Modifier	Purpose
91	Repeat clinical diagnostic laboratory test on the same day.
92	Alternative laboratory platform testing using portable or kit-based technology.

Frequently Asked Questions (FAQs)

Q1. What is Modifier 92?

Answer: Modifier 92 identifies laboratory testing performed using a qualifying alternative laboratory platform, such as a portable or kit-based testing system with a disposable analytical chamber.

Q2. Does Modifier 92 apply simply because testing occurs in a physician office?

Answer: No. The testing methodology, not the location, determines whether Modifier 92 applies. Office-based testing performed on a conventional analyzer does not qualify.

Q3. Which laboratory tests commonly use Modifier 92?

Answer: Modifier 92 has traditionally been associated with qualifying rapid HIV laboratory tests, including CPT® codes 86701–86703 and 87389, when performed using an alternative laboratory platform. Always verify the current CPT® guidance.

Q4. Is Modifier 92 used for all point-of-care tests?

Answer: No. Not every point-of-care test qualifies. The testing system must meet the CPT® definition of an alternative laboratory platform, and the CPT® code must support Modifier 92.

AR Caller Tips

When following up on a denied Modifier 92 claim:

Verify the CPT® code supports Modifier 92.
Confirm the laboratory used a qualifying alternative testing platform.
Request review of the laboratory documentation.
Verify CLIA information if required.
Document the payer representative’s name, reference number, and appeal instructions.

Interview Questions

Question 1

What is Modifier 92?

Answer: Modifier 92 identifies laboratory testing performed using an alternative laboratory platform such as a portable or kit-based testing system.

Question 2

What is the difference between Modifier 90 and Modifier 92?

Answer: Modifier 90 identifies who performed the laboratory test (an outside reference laboratory), while Modifier 92 identifies how the laboratory test was performed (using an alternative testing platform).

Question 3

Can every point-of-care laboratory test be billed with Modifier 92?

Answer: No. Only eligible laboratory CPT® codes performed using the qualifying testing methodology should be reported with Modifier 92.

Practice Scenario

Scenario

A community health clinic performs rapid HIV screening using a CLIA-waived portable analyzer with a disposable single-use testing cartridge. The provider reports CPT® 87389, and the testing platform meets the CPT® definition of an alternative laboratory platform.

Question

Should Modifier 92 be reported?

Answer

Yes. Because the laboratory test was performed using a qualifying alternative laboratory platform with a disposable analytical chamber, Modifier 92 is appropriate when reporting the eligible CPT® code.

Related Modifiers

Modifier 90 – Reference (Outside) Laboratory
Modifier 91 – Repeat Clinical Diagnostic Laboratory Test
Modifier 99 – Multiple Modifiers

Common Billing Mistakes

Using Modifier 92 for conventional laboratory analyzers.
Assuming every point-of-care test qualifies.
Reporting Modifier 92 with unsupported CPT® codes.
Failing to document the testing platform.
Confusing Modifier 92 with Modifier 90.

Key Takeaways

Modifier 92 identifies alternative laboratory platform testing.
The testing methodology, not the location, determines its use.
It commonly applies to qualifying rapid HIV testing performed with portable, cartridge-based systems.
Always verify that the CPT® code supports Modifier 92.
Proper documentation of the testing platform helps prevent claim denials.

References

CPT® Modifier Definitions – Alternative Laboratory Platform Testing.
HRSA Coding Guidance – Modifier 92 for Rapid Laboratory Testing.
AMA CPT® Professional Edition (licensed codebook).

Conclusion

Modifier 92 is a specialized laboratory modifier used to identify tests performed with a qualifying alternative laboratory platform, such as portable or cartridge-based testing systems. Correct use depends on the testing methodology—not simply where the test is performed. Accurate documentation, correct CPT® code selection, and adherence to Medicare and payer-specific policies help ensure compliant billing and appropriate reimbursement.

Educational Disclaimer

This article was prepared with the assistance of artificial intelligence (AI) for educational and informational purposes. It is based on publicly available CMS guidance, CPT® modifier definitions, and general medical billing principles. It is not an official publication of the American Medical Association (AMA), CMS, or any insurance payer. CPT® is a registered trademark of the American Medical Association. Always consult the latest AMA CPT® codebook, CMS manuals, CLIA regulations, National Correct Coding Initiative (NCCI) policies, and payer-specific billing policies before coding, billing, or submitting claims.