CPT Code 86592: Syphilis non-treponemal antibody qualitative test

CPT Code 86592 is the billing code for a qualitative syphilis non-treponemal antibody test, covering the VDRL, RPR and ART methods. The result is reported as positive or negative, with no titer. Its quantitative counterpart is 86593, which is the code for a titer.

Below you’ll find the official descriptor, the 86592 versus 86593 split, and the ICD-10 codes payers accept. Medicare coverage under NCD 210.10, documentation requirements, and the four errors behind most denials follow.

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Key takeaways

CPT Code 86592 covers qualitative non-treponemal syphilis antibody testing, including the VDRL, RPR and ART methods.

Use 86593 for quantitative titer testing ordered to monitor treatment response. Billing both on one date needs documented clinical justification.

Accepted ICD-10 codes include Z11.3 for STI screening, A53.9 for unspecified syphilis, and O98.111 to O98.113 for pregnancy by trimester.

Medicare covers 86592 as a preventive benefit under NCD 210.10 for pregnant patients and adults at increased risk.

Practice management software like Pabau links the diagnosis code and scrubs the claim before submission.

CPT Code 86592: Official descriptor and code details

CPT Code 86592 is described by the American Medical Association (AMA) as: Syphilis test, non-treponemal antibody; qualitative (eg, VDRL, RPR, ART). It sits in the Immunology subsection of the Pathology and Laboratory section.

The “qualitative” designation means the result is reported as positive or negative. No titer is calculated. That distinction from 86593 governs which code is appropriate, and whether the two can share a claim.

Non-treponemal tests detect reagin antibodies produced in response to tissue damage caused by Treponema pallidum, the bacterium behind syphilis. They do not detect the organism itself. That is why a positive 86592 result usually needs confirmation with a treponemal test such as 86780.

CPT 86592 vs CPT 86593: Qualitative vs quantitative

CPT 86592 covers qualitative screening. CPT 86593 covers quantitative titration. Picking the wrong one of the two is the most common billing error on syphilis claims.

A patient presenting for routine STI screening gets 86592. A patient known to have syphilis, returning for a three-month treatment check, gets 86593 to measure whether the titer has declined. Billing 86592 for a monitoring visit, or 86593 for an initial screen, draws a denial or a medical necessity query.

Co-billing 86592 and 86593 on the same date of service is not prohibited outright. It does need documentation showing a distinct clinical rationale for each test. Most payer policies either bundle the pair or require an appeal with records. Confirm the policy with your Medicare Administrative Contractor (MAC) before submitting both.

Related CPT codes: 86780 and the syphilis testing panel

CPT Code 86592 rarely stands alone in a syphilis workflow. Two more codes complete the standard testing sequence, and several STI panel codes are commonly co-ordered on the same requisition.

The traditional algorithm runs 86592 first. A reactive result then triggers 86780 for treponemal confirmation. Only after confirmed infection does 86593 become relevant for staging or monitoring. The sequence below shows which code carries the claim at each step, under both algorithms labs use.

Some labs now use a reverse algorithm, starting with a treponemal test and following a reactive result with 86592. The sequence is clinically valid but raises billing questions. Document the order of the tests and the reason for it, so any payer query has an answer in the record.

When to use 86592: Clinical indications

CPT Code 86592 is appropriate whenever a qualitative non-treponemal syphilis antibody test is ordered. The CDC’s syphilis clinical guidance points to four main ordering contexts:

• Initial syphilis screening: routine STI workup in primary care, sexual health practices, or urgent care.
• Prenatal care: mandatory or strongly recommended at the first prenatal visit, and again in the third trimester in many states.
• High-risk population screening: sexually active adults with new or multiple partners, men who have sex with men, and patients with HIV. Screening also applies to people who exchange sex for money or drugs.
• Pre-incarceration or correctional health intake: mandated screening in many state systems.

Ordering providers include primary care physicians, OB-GYNs, infectious disease specialists, sexual health providers, and emergency medicine clinicians.

ICD-10 codes accepted with 86592

Accepted ICD-10-CM diagnosis codes for CPT Code 86592 vary by payer. The codes below are commonly accepted, but verify against your MAC’s local coverage determination (LCD) before submitting. The CDC/NCHS ICD-10-CM lookup tool gives official descriptions and validation.

Z11.3 is the workhorse code for asymptomatic screening. When the ordering note documents a routine STI check with no current diagnosis, Z11.3 is the right primary diagnosis. Payers sometimes question A53.9 without supporting documentation, so reference the clinical presentation in the note.

Watch the pregnancy codes. O98.11 is not itself a trimester code, and O98.12 and O98.13 are not the second and third trimesters. O98.12 covers syphilis complicating childbirth, and O98.13 covers the puerperium.

The trimester lives in the sixth character. O98.111 is the first trimester, O98.112 the second, and O98.113 the third. Use O98.119 when the record does not document a trimester. Our ICD-10-CM index lists each subdivision in full.

Medicare reimbursement and fee schedule

Medicare reimburses CPT Code 86592 under the Clinical Laboratory Fee Schedule (CLFS), not the Physician Fee Schedule. Lab codes in the Pathology and Laboratory section carry no work RVU component.

CMS sets the 2026 CLFS rate annually, and it varies slightly by geographic locality. Verify the current rate from the CMS fee schedule lookup or the CLFS download before quoting a figure to your staff.

Claims for CPT Code 86592 can be transmitted electronically through a clearinghouse that connects to CMS and commercial payers. Validating the claim against payer edits at submission catches fee schedule mismatches before they turn into denials.

Medicare coverage policy for syphilis screening

Medicare covers syphilis screening as a preventive benefit under National Coverage Determination (NCD) 210.10. Its full title is Screening for Sexually Transmitted Infections (STIs) and High-Intensity Behavioral Counseling (HIBC) to Prevent STIs. Coverage applies to:

• Pregnant patients: covered at any point during pregnancy.
• Adults at increased risk: a history of multiple sex partners, sex in exchange for money or drugs, or men who have sex with men.
• Frequency: once every 12 months for non-pregnant high-risk adults, and as clinically indicated during pregnancy.

You will see this policy quoted as NCD 352.1 in coder forums and vendor documents. That number is the CMS coverage database’s internal record id, not the NCD designation. Cite 210.10 in an appeal and the reviewer will find the policy.

Medicare does not cover 86592 for routine low-risk screening outside these populations without medical necessity documentation. When the patient falls outside the NCD criteria, an Advance Beneficiary Notice (ABN) may be required before the test is performed.

Documentation requirements before you submit

Every CPT Code 86592 claim needs the following in the medical record before submission. Missing any one of them is a predictable denial trigger.

• Ordering provider name and NPI: the requisition must name the ordering clinician. Lab-only claims with no referring NPI are rejected by most MACs.
• Medical necessity statement: a brief clinical note explaining why the test was ordered, such as “new sexual partner, STI screening requested by patient”.
• Specimen type and collection date: blood, either serum or plasma. The collection date must match the date of service on the claim.
• Test method documented: VDRL, RPR, or ART. The lab report should name the method used.
• ICD-10 linkage: the diagnosis code must match the reason documented in the ordering note. Z11.3 requires a note that the patient is asymptomatic.
• ABN (if applicable): required for a Medicare patient who does not meet the NCD 210.10 criteria. Without one, the practice cannot bill the patient if Medicare denies the claim.

CLIA certification is a parallel requirement. The performing laboratory must hold a CLIA certificate at the complexity level for the syphilis method being run. Confirm that in the CMS CLIA database before assuming the lab can bill these tests.

Common billing errors and how to avoid them

Four errors account for the majority of CPT Code 86592 denials. Each one is avoidable with the right workflow check in place.

Effective denial management workflows catch most of these before submission. A billing platform that scrubs claims against payer-specific ICD-10 lists, and flags a missing ABN, cuts the rework burden on the billing team.

How billing software streamlines CPT Code 86592 claims

Manual code lookup and re-keying is where transcription errors enter the syphilis billing workflow. A practice that looks the code up in a standalone reference tool, then re-keys it into a separate billing system, invites that error. 86592 and 86593 differ by one digit.

Practice management software like Pabau puts code validation inside the same platform used for scheduling and clinical notes. When a provider orders a syphilis test in Pabau, the code selection, ICD-10 linkage, and claim assembly happen in one workflow.

Our claims management software then transmits the claim and reconciles the 835 remittance when it comes back. So the billing team can see how each 86592 claim was adjudicated without logging into a separate portal.

For a practice running high-volume STI panels, the payoff is fewer claims coming back. CMS fee schedule updates flow in annually, so the expected reimbursement for 86592 stays current without manual work.

Stop losing revenue to syphilis billing denials

Pabau automates CPT code selection, ICD-10 linkage, and claim scrubbing for lab codes including CPT Code 86592. See how practices cut denial rates with one integrated billing workflow.

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Conclusion

CPT Code 86592 is a straightforward screening code. The complexity sits in the split with 86593 and in the Medicare coverage rules. Three levers control the denial rate. Get the ICD-10 linkage right, obtain an ABN where NCD 210.10 does not cover the patient, and document the test method.

Fix those three and the code stops generating rework. Leave any one of them to chance and the denial queue grows every month the panel volume does.

Want to see how Pabau handles code validation and claim submission for lab codes like 86592? Book a demo and we’ll walk through the billing workflow with your own claim types.

Continue your research

Need to understand how clearinghouse submission works end-to-end? 837 file submission guide covers how electronic lab claims move from practice system to payer.

Looking for a clean claim checklist before submitting STI panel codes? Clean claim requirements walks through the fields every lab claim must include to avoid front-end rejections.

Want to structure lab charges for first-pass acceptance? Superbill and lab code billing guide covers what belongs on the charge slip before it reaches the biller.

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