Modifier 92
Alternative Laboratory Platform Testing
Learn what Modifier 92 means, when it applies, the laboratory platform requirements, applicable HIV testing codes, examples, common billing mistakes, AR denial investigation steps and how Modifier 92 differs from Modifiers 90 and 91.
Modifier 92 at a Glance
The essential points every medical biller, coder and AR caller should understand.
Alternative Platform
Modifier 92 identifies laboratory testing performed using an alternative laboratory platform.
Testing Kit
The CPT description refers to a kit or transportable instrument containing a single-use disposable analytical chamber.
HIV Testing
The published CPT description identifies HIV testing codes 86701–86703 and 87389 as applicable examples.
Alternative Platform
The testing platform does not require permanent dedicated laboratory space and may be designed to be transported.
What Is Modifier 92?
Understanding Alternative Laboratory Platform Testing.
Simple Definition
Modifier 92 is the CPT modifier used to identify certain laboratory testing performed using an alternative laboratory platform.
The published CPT description explains that when laboratory testing is performed using a kit or transportable instrument that wholly or partly consists of a single-use, disposable analytical chamber, the service may be identified by adding Modifier 92 to the usual laboratory procedure code.
The description specifically identifies HIV testing codes 86701–86703 and 87389.
Easy Way to Remember
Think:
“92 = Alternative laboratory platform.”
The key issue is not simply where the test is performed. The characteristics of the testing platform and the applicable CPT guidance determine whether Modifier 92 is appropriate.
Core Requirements of Modifier 92
Evaluate the actual testing method before reporting the modifier.
Laboratory Test
The underlying service must be a laboratory testing service described by the applicable CPT code.
Alternative Platform
The test is performed using the type of alternative laboratory platform described by CPT guidance.
Disposable Chamber
The platform wholly or partly consists of a single-use, disposable analytical chamber.
Applicable CPT
The modifier must be reported with an applicable laboratory procedure code rather than being added automatically to any laboratory service.
What Does “Alternative Laboratory Platform” Mean?
Traditional Laboratory Setup
- Permanent laboratory infrastructure.
- Dedicated laboratory space.
- Larger laboratory instruments.
- Testing performed within established laboratory facilities.
Alternative Platform
- Kit or transportable instrument.
- Single-use disposable analytical chamber.
- Does not require permanent dedicated space.
- Designed so the testing platform can be carried or transported near the patient.
Important Coding Point
Merely performing a laboratory test close to a patient does not, by itself, determine whether Modifier 92 is appropriate. The CPT description states that the location of testing is not itself determinative.
CPT Codes Identified With Modifier 92
The published CPT description specifically identifies these HIV testing codes.
| CPT Code | Category | Modifier 92 | Key Point |
|---|---|---|---|
| 86701 | HIV-1 antibody | Applicable when CPT requirements are met | Review the current CPT descriptor and payer requirements. |
| 86702 | HIV-2 antibody | Applicable when CPT requirements are met | Verify the actual test method before billing. |
| 86703 | HIV antibody | Applicable when CPT requirements are met | Confirm the applicable CPT descriptor and platform. |
| 87389 | HIV-1/2 antigen/antibody | Applicable when CPT requirements are met | Confirm the test methodology and payer policy. |
Coding Caution
Do not treat Modifier 92 as a general-purpose laboratory modifier. The published CPT descriptor specifically identifies the HIV testing code range above. Always verify the current CPT code descriptor and payer-specific billing requirements before claim submission.
When Is Modifier 92 Appropriate?
Use a methodology-first approach.
Applicable Laboratory Test
The service is reported using an applicable laboratory procedure code identified by CPT guidance.
Alternative Platform
The test is performed using a kit or transportable instrument meeting the CPT description.
Disposable Analytical Chamber
The testing platform wholly or partly uses a single-use, disposable analytical chamber.
Portable Design
The platform is designed so that it can be carried or transported to the vicinity of the patient.
No Permanent Space Required
The test does not require permanent dedicated laboratory space because of the platform’s design.
Payer Requirements
Confirm that the payer recognizes the modifier and accepts the reported methodology.
When Should Modifier 92 NOT Be Used?
Avoid treating Modifier 92 as a generic point-of-care modifier.
Any Laboratory Test Automatically
Modifier 92 is not a modifier that should be appended to every laboratory service simply because the service is performed near the patient.
Location Alone
The fact that testing occurs in a physician office or near the patient does not, by itself, establish Modifier 92.
Permanent Laboratory Platform
Do not use the modifier merely because a test is performed on a particular instrument if the platform does not meet the CPT description.
Unrelated CPT Code
Do not append Modifier 92 to a procedure simply because it is another laboratory service.
Unsupported Methodology
If the actual testing method does not meet the CPT description, Modifier 92 should not be added simply to obtain separate payment.
Payer Assumption
Do not assume that every payer processes Modifier 92 identically. Verify payer-specific requirements.
Modifier 92 Decision Workflow
Follow this workflow before adding Modifier 92 to a laboratory claim.
Modifier 90 vs 91 vs 92
Three laboratory modifiers with three different purposes.
| Modifier | Meaning | Main Question | Key Concept |
|---|---|---|---|
| 90 | Reference / Outside Laboratory | Who performed the laboratory procedure? | Testing performed by a party other than the treating or reporting physician/QHP. |
| 91 | Repeat Clinical Diagnostic Laboratory Test | Why was the laboratory test repeated? | Same laboratory test repeated on the same day to obtain subsequent medically necessary results. |
| 92 | Alternative Laboratory Platform Testing | What type of laboratory platform was used? | Applicable alternative platform using the characteristics described by CPT. |
Easy Memory Trick
90 = Outside Lab • 91 = Repeat Lab • 92 = Alternative Lab Platform
Modifier 91 vs Modifier 92
Modifier 91
- Repeat clinical diagnostic laboratory test.
- Same patient.
- Same date of service.
- Another medically necessary result is needed.
- The issue is the repeat testing circumstance.
Modifier 92
- Alternative laboratory platform testing.
- Platform characteristics matter.
- Kit or transportable instrument.
- Single-use disposable analytical chamber.
- The issue is the testing platform/methodology.
Modifier 92 vs Point-of-Care Testing
These concepts are related but should not be treated as interchangeable.
Point-of-Care Testing
Point-of-care describes the location or workflow in which testing is performed near the patient.
Examples can include testing performed in a physician office, clinic or other patient-care environment.
Modifier 92
Modifier 92 is based on the alternative laboratory platform described by CPT.
The CPT description specifically states that the location of testing is not itself determinative.
AR Tip
If a payer representative tells you “the test was performed point-of-care, so Modifier 92 should be used,” do not stop there. Verify the actual CPT code, testing methodology and payer policy.
Modifier 92 Examples
Practical scenarios for billers and AR callers.
A laboratory performs an applicable HIV test using a kit or transportable instrument that meets the CPT description for alternative laboratory platform testing.
Applicable CPT + 92Modifier 92 may be appropriate when all applicable CPT and payer requirements are satisfied.
A testing platform is designed to be carried or transported to the vicinity of the patient and uses the type of disposable analytical chamber described by CPT.
CPT + 92Verify that the underlying procedure is one for which the modifier applies.
A laboratory performs an HIV test using a large permanent analyzer in dedicated laboratory space.
CPTDo not automatically add Modifier 92. The actual platform must meet the CPT requirements.
An HIV test is performed in a physician’s office.
Location ≠ 92The location alone does not establish Modifier 92. Review the testing platform and applicable CPT guidance.
A laboratory performs a routine test that is not one of the applicable procedures identified by the CPT guidance for Modifier 92.
CPTDo not add Modifier 92 simply because an alternative instrument was used.
The claim contains an applicable CPT code and Modifier 92, but the payer denies the line.
CPT + 92The AR caller should verify the payer’s current policy, methodology requirements, coding edits and documentation requirements before correcting or appealing.
Common Modifier 92 Denials
Common claim problems involving alternative laboratory platform testing.
Invalid Modifier
The payer does not recognize Modifier 92 as submitted with the particular procedure.
Wrong CPT
Modifier 92 was appended to a laboratory code outside the applicable CPT guidance.
Platform Not Supported
The payer’s review indicates that the testing methodology does not support the modifier.
Documentation Needed
The payer requires additional information about the laboratory testing method.
CLIA Issue
The laboratory’s certification or applicable CLIA requirements may affect payment.
Payer Policy
The payer may have specific billing requirements for the laboratory service.
Incorrect Billing Location
The claim may contain inconsistent place-of-service or laboratory information.
Coding Mismatch
The modifier, CPT, diagnosis or other claim information may not align with the service.
Incorrect Assumption
Modifier 92 may have been added because the test was performed near the patient without verifying the actual platform.
AR Caller Workflow for Modifier 92 Denials
A practical denial-management workflow.
Review ERA / EOB
Identify the exact denial message, CARC, RARC and affected claim line.
Identify the CPT
Determine the exact laboratory CPT code submitted with Modifier 92.
Verify the Modifier
Confirm that Modifier 92 was actually appended to the claim line and was not dropped during claim transmission.
Identify Testing Method
Determine what kit, instrument or laboratory platform was used.
Verify Platform Characteristics
Determine whether the platform matches the CPT description, including the disposable analytical chamber requirement.
Verify CPT Applicability
Confirm that the procedure code is within the applicable CPT guidance for Modifier 92.
Check CLIA
Review applicable CLIA certification and testing requirements for the service.
Check Payer Policy
Verify the payer’s current policy, billing manual and claim requirements.
Check NCCI / Edits
Determine whether an NCCI or other coding edit affected the claim line.
Identify Root Cause
Determine whether the issue is coding, methodology, documentation, payer policy, CLIA or claim transmission.
Correct or Appeal
Submit the appropriate corrected claim or appeal only when supported by the payer’s requirements.
Document Follow-Up
Record payer representative, reference number, instructions, filing deadline and next action.
AR Caller Script for Modifier 92
Questions to ask the payer during a denial investigation.
“I’m calling regarding a laboratory claim that was submitted with Modifier 92 for alternative laboratory platform testing.”
“Could you please provide the exact denial reason and the applicable CARC and RARC codes?”
“Can you confirm whether the denial is specifically related to Modifier 92?”
“Can you confirm whether your policy recognizes Modifier 92 with the CPT code billed?”
“Does your policy require documentation of the testing platform or methodology?”
“Can you confirm whether there are any CLIA-related requirements affecting this claim?”
“Can you confirm whether this CPT code is eligible for Modifier 92 under your current policy?”
“If a corrected claim is required, could you please confirm the exact correction and filing deadline?”
“If an appeal is appropriate, what documentation should we submit?”
“May I have the call reference number for our records?”
Documentation Checklist
Information the billing and AR team should be able to verify.
CPT Code
Identify the exact laboratory CPT code billed.
Test Method
Identify the methodology used for the laboratory test.
Platform
Identify the kit or transportable instrument used.
Disposable Chamber
Verify the applicable single-use analytical chamber characteristics.
CLIA Status
Verify applicable laboratory certification and CLIA requirements.
Payer Policy
Maintain the applicable payer billing guidance used for claim submission.
Root Causes of Modifier 92 Denials
Wrong Modifier
Modifier 92 was added without confirming the testing platform.
Wrong CPT
The underlying laboratory code does not support the modifier under applicable guidance.
Methodology Issue
The actual testing method does not meet the applicable alternative platform description.
Documentation
The claim does not contain information needed to support the billed methodology.
CLIA Problem
Laboratory certification or applicable testing requirements may affect payment.
Payer Policy
The payer has specific requirements that were not followed.
Claim Transmission
The modifier may have been dropped or incorrectly transmitted.
Staff Training
Staff may confuse Modifier 92 with point-of-care testing or other laboratory modifiers.
Modifier 92 and CLIA
The modifier and laboratory certification are separate coding considerations.
Why CLIA Matters
- Laboratory testing is subject to applicable CLIA requirements.
- The laboratory’s certification status can affect Medicare payment.
- Some tests are classified as waived under CLIA.
- Applicable HCPCS/CPT and CLIA requirements should be reviewed together.
2026 CMS Reminder
CMS’s 2026 Clinical Laboratory Fee Schedule updates continue to identify CLIA-related requirements for applicable laboratory codes.
CMS explains that codes subject to CLIA edits require the appropriate laboratory certification, while applicable waived tests may require the QW modifier when CMS requirements are met.
Modifier 92 should therefore not be treated as a substitute for CLIA compliance.
Modifier 92 and Medicare
Check CPT
Verify the current CPT code and modifier guidance.
Check CLFS
Review the applicable Medicare Clinical Laboratory Fee Schedule information.
Check CLIA
Confirm the applicable laboratory certification and CLIA edit requirements.
Check NCCI
Review applicable NCCI edits and current CMS guidance.
Check MAC
Review applicable Medicare Administrative Contractor guidance.
Check Coverage
Confirm that the underlying laboratory service is covered under the applicable Medicare requirements.
Important
CMS notes that inclusion of a laboratory code or payment amount in the CLFS does not itself mean Medicare covers the test. Coverage and other payment requirements must still be satisfied.
Modifier 92 and Medicaid
Medicaid Review Checklist
- Identify the state Medicaid program.
- Verify whether Modifier 92 is recognized.
- Review the state Medicaid laboratory policy.
- Check the applicable Medicaid fee schedule.
- Review CLIA requirements.
- Check Medicaid MCO requirements when applicable.
Important
Medicaid billing policies can vary by state. Managed-care organizations may also establish additional claim-processing requirements.
Do not assume that a Medicare processing rule automatically applies to every Medicaid program.
Modifier 92 and Commercial Insurance
Verify Policy
Confirm the payer’s current laboratory billing policy.
Verify CPT
Confirm that the underlying CPT code supports the modifier.
Verify Method
Confirm the actual testing platform used.
Check CLIA
Review applicable laboratory certification requirements.
Check Edits
Review applicable coding edits and payer-specific claim edits.
Appeal Correctly
Use the payer’s current corrected-claim or appeal process.
How to Prevent Modifier 92 Denials
Verify Methodology
Know exactly which platform was used before adding the modifier.
Verify CPT
Confirm the modifier applies to the underlying procedure code.
Train Staff
Teach staff that Modifier 92 is not simply a synonym for point-of-care testing.
Check CLIA
Confirm the laboratory has the applicable certification.
Check Payer
Review current payer-specific laboratory billing requirements.
Audit Claims
Monitor Modifier 92 denials by payer, CPT and root cause.
Modifier 92 Quick Cheat Sheet
- Modifier 92 = Alternative Laboratory Platform Testing.
- It is a laboratory CPT modifier.
- The CPT description refers to a kit or transportable instrument.
- The platform wholly or partly consists of a single-use, disposable analytical chamber.
- The test does not require permanent dedicated laboratory space by design.
- The platform may be hand carried or transported near the patient.
- Location alone does not determine whether Modifier 92 applies.
- Published CPT guidance specifically identifies HIV testing codes 86701–86703 and 87389.
- Do not use Modifier 92 automatically for every point-of-care laboratory test.
- Verify the actual testing methodology.
- Verify the underlying CPT code.
- Check CLIA requirements.
- Check Medicare, Medicaid or commercial payer requirements.
- Modifier 92 does not guarantee payment.
Before You Bill Modifier 92
- Confirm the laboratory CPT code.
- Confirm the actual test methodology.
- Identify the testing platform.
- Confirm whether the platform is a kit or transportable instrument.
- Confirm the applicable disposable analytical chamber characteristics.
- Confirm that permanent dedicated laboratory space is not required by the platform’s design.
- Confirm the CPT guidance supports Modifier 92.
- Verify the payer recognizes the modifier.
- Check applicable CLIA requirements.
- Check NCCI and other coding edits where applicable.
- Verify claim transmission retained the modifier.
- Document the methodology for denial investigation.
Modifier 92 FAQs
What is Modifier 92?
Modifier 92 identifies Alternative Laboratory Platform Testing. It is used with an applicable laboratory procedure when the testing is performed using the platform characteristics described by CPT.
What does Modifier 92 mean in medical billing?
It indicates that an applicable laboratory service was performed using an alternative laboratory platform described in the CPT guidance.
What is Alternative Laboratory Platform Testing?
It refers to laboratory testing performed using a kit or transportable instrument that wholly or partly consists of a single-use disposable analytical chamber and does not require permanent dedicated laboratory space by design.
Is Modifier 92 the same as point-of-care testing?
No. Point-of-care describes where or how testing is performed, while Modifier 92 is tied to the alternative laboratory platform described by CPT. The location alone is not determinative.
Which CPT codes are identified with Modifier 92?
The published CPT description identifies HIV testing codes 86701–86703 and 87389. Always verify the current CPT guidance before billing.
Can Modifier 92 be used with any laboratory CPT code?
No. Do not treat Modifier 92 as a universal laboratory modifier. The applicable CPT description and payer policy must support its use.
Does performing the test in a physician office automatically justify Modifier 92?
No. The CPT description specifically states that the location of testing is not itself determinative.
Does Modifier 92 indicate that a test is CLIA waived?
No. Modifier 92 and CLIA status are separate considerations. Review the applicable CLIA requirements and CMS guidance for the underlying test.
Can Modifier 92 be used with Modifier 91?
Do not automatically combine modifiers. Modifier 91 addresses appropriate repeat clinical diagnostic laboratory testing, while Modifier 92 identifies alternative laboratory platform testing. Any combination must be supported by the applicable CPT and payer rules.
What is the difference between Modifier 90 and 92?
Modifier 90 identifies an outside or reference laboratory situation. Modifier 92 identifies applicable alternative laboratory platform testing.
What is the difference between Modifier 91 and 92?
Modifier 91 addresses an appropriate repeat laboratory test on the same day to obtain subsequent medically necessary results. Modifier 92 addresses the testing platform or methodology.
Can Modifier 92 be used simply because a test is portable?
Not automatically. The platform must meet the applicable CPT description. Portability alone is not enough.
Does Modifier 92 guarantee Medicare payment?
No. The modifier does not itself establish coverage or payment. Medicare payment also depends on applicable coverage, coding, CLIA, fee schedule and other requirements.
What should an AR caller check first for a Modifier 92 denial?
Start with the ERA/EOB denial reason, then verify the CPT, modifier, testing methodology, laboratory platform, CLIA requirements and payer policy.
What documentation should an AR caller request?
Depending on the payer, request information supporting the underlying CPT service and the testing methodology, including the platform used and applicable laboratory certification information when relevant.
Can Modifier 92 be used for every rapid HIV test?
Do not make that assumption. The applicable CPT code, testing platform and payer requirements must be verified before adding Modifier 92.
Is Modifier 92 a HCPCS modifier?
Modifier 92 is a CPT modifier. The published CPT description identifies its use with applicable laboratory procedure codes.
What does the disposable analytical chamber mean?
It refers to a single-use analytical chamber that forms wholly or partly part of the kit or transportable instrument used for the laboratory testing described by the CPT modifier.
Does the testing have to happen directly at the patient’s bedside?
No. The CPT description explains that the location itself is not determinative. The platform’s design and applicable testing characteristics are the important considerations.
Official & Reference Resources
Verify current laboratory billing, CLIA and Medicare requirements before submitting or appealing a claim.
Current 2026 Reminder
CMS’s Clinical Laboratory Fee Schedule page was updated in August 2026 and contains current 2026 laboratory payment and reporting information. CMS also maintains quarterly CLFS files, including the CY 2026 Q3 release.
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