Modifier 92- Alternative Laboratory Platform Testing

Identifies qualifying laboratory testing performed using a single-use test kit or transportable testing platform that can be used outside a traditional laboratory setting.

What Is Modifier 92?

Modifier 92 identifies alternative laboratory platform testing. It is used with qualifying laboratory tests performed using a single-use test kit or a transportable testing platform rather than conventional laboratory equipment.

The modifier describes the testing platform or methodology, not whether a test was repeated, referred to another laboratory, or CLIA-waived.

Modifier 92 should only be reported when the specific test and testing method satisfy applicable coding and payer requirements.

When to Use Modifier 92

Alternative Testing Platform: The laboratory test is performed using a qualifying alternative laboratory platform.

Single-Use Test Kit: The testing methodology involves an eligible single-use testing device or kit.

Transportable Platform: The test uses qualifying equipment capable of being transported to different testing locations.

Applicable Laboratory Test: The underlying CPT or HCPCS code supports reporting Modifier 92 under applicable payer guidance.

Testing Method Documented: The medical or laboratory record identifies the platform or methodology used.

When NOT to Use Modifier 92

Conventional Laboratory Equipment: Do not use Modifier 92 solely because a laboratory test was performed outside a large laboratory.

CLIA-Waived Test Alone: Modifier QW identifies qualifying CLIA-waived tests and serves a different purpose.

Reference Laboratory: Modifier 90 identifies qualifying tests referred to an outside laboratory for performance.

Repeat Laboratory Test: Modifier 91 identifies qualifying clinical diagnostic laboratory tests repeated when additional results are medically necessary.

Unsupported Test: Do not append Modifier 92 when the underlying laboratory test or payer policy does not support its use.

Billing Example

A provider performs a qualifying laboratory test using an eligible single-use testing kit or transportable testing platform.

The procedure code identifies the laboratory test itself.

When applicable, the provider reports the laboratory test with Modifier 92 to indicate that it was performed using an alternative laboratory platform.

The documentation should identify the test performed and the testing methodology used.

Documentation Requirements

Test Ordered: Maintain documentation supporting the laboratory test performed.

Testing Platform: Identify the alternative laboratory platform or testing system used.

Testing Method: Document how the specimen was analyzed.

Test Results: Maintain the resulting laboratory findings in the patient's record.

Medical Necessity: Documentation should support why the underlying laboratory test was medically reasonable and necessary.

CLIA Compliance: The testing facility must satisfy applicable CLIA requirements for the laboratory service performed. CMS continues to apply CLIA certification edits to laboratory HCPCS codes in 2026.

Billing and Claim Considerations

Modifier 92 describes the alternative platform used to perform the laboratory test. It does not independently establish Medicare coverage, medical necessity, or payment.

Providers should verify that the underlying laboratory code and testing methodology support Modifier 92 before submitting the claim.

CLIA requirements remain separate from Modifier 92. CMS continues to require laboratories to have the appropriate CLIA certification for tests subject to CLIA edits, and qualifying waived tests may require Modifier QW under Medicare rules.

Coverage and reporting requirements may also vary by test and payer, so the applicable Medicare coverage policy and current laboratory billing guidance should be reviewed.

Common Billing Mistakes

Confusing 92 With QW: Modifier 92 describes an alternative testing platform, while Modifier QW identifies qualifying CLIA-waived testing.

Using 92 for Every Point-of-Care Test: The location of testing alone does not establish that Modifier 92 is appropriate.

Unsupported Laboratory Code: The modifier is appended without verifying that it applies to the underlying test.

Insufficient Platform Documentation: The record does not establish the alternative testing methodology used.

Assuming 92 Establishes Coverage: The modifier does not override Medicare medical necessity or coverage requirements.

Ignoring CLIA Requirements: Modifier 92 does not replace applicable laboratory certification requirements.

Common Denial Reasons

Modifier Not Applicable: The reported laboratory test does not support Modifier 92.

Testing Method Not Supported: Documentation does not demonstrate use of a qualifying alternative laboratory platform.

CLIA Requirements Not Met: The laboratory does not have the appropriate certification for the test performed.

Medical Necessity Not Supported: Documentation does not establish the need for the underlying laboratory test.

Incorrect Modifier: Modifier QW, 90, 91, or another laboratory modifier better represents the circumstances.

Claim Information Inconsistent: The reported procedure, modifier, or laboratory information conflicts with the documented service.

Modifier 92 vs. Modifier QW

Modifier 92: Identifies qualifying alternative laboratory platform testing.

Modifier QW: Identifies qualifying CLIA-waived laboratory testing.

The two modifiers describe different characteristics of a laboratory service. Modifier 92 addresses the testing platform, while QW communicates CLIA-waived status when required by Medicare. CMS's current laboratory guidance continues to require QW for applicable waived tests.

Frequently Asked Questions

Is Modifier 92 the same as Modifier QW?
No. Modifier 92 identifies alternative laboratory platform testing, while Modifier QW identifies qualifying CLIA-waived laboratory tests.

Can Modifier 92 be added to every point-of-care laboratory test?
No. The testing circumstances and underlying code must support alternative laboratory platform reporting. Performing a test at the point of care does not automatically make Modifier 92 appropriate.