Is an STD test at urgent care covered by insurance?
Often at no cost, and sometimes not. Code 87491 is the sensitive lab test for chlamydia, run from a swab or a urine sample. As routine screening for sexually active women 24 and under, most plans pay it in full. Run because of symptoms, the same test becomes diagnostic, with your copay or deductible in play.
$0 preventive
Free as screening, billed with symptoms
Women 24 and under
The no cost screening rule covers sexually active women 24 and under, and older women at higher risk. There is no matching routine rule for men.
Symptoms flip it
A screening diagnosis usually pays in full. A symptom diagnosis makes the same test diagnostic, and the patient's copay or deductible comes back into play.
1 swab, 2 codes
Chlamydia and gonorrhea are usually run off one swab but billed as two codes, 87491 and 87591, each with its own price and its own edit.
Network decides
Preventive pays in full only in network, and the sample often goes to an outside lab. One check before the visit shows plan status and what is left.
What would a real check show for this patient's 87491?
Pick a sample plan and type your fee. This is the visibility a real-time check gives the desk for every actual patient, in under a second.
Eligibility readout · 87491
Sample- Coverage
- Active, preventive screening at 100 percent
- Frequency
- Once a year for women 24 and under, in network
- Patient share
- Type your fee to see it
Estimate from a sample plan. A real check reads the actual plan in under a second.
When 87491 is the right code
- Sensitive lab method, not a rapid office test
- Swab or urine sample sent for testing
- Screening diagnosis used when there are no symptoms
- Symptom diagnosis used when symptoms are present
- Each organism reported on its own line
Documentation payers expect
Payers expect the right diagnosis first: a routine screening code for no-symptom testing and a symptom or exposure code otherwise. That single choice decides whether the patient pays nothing or pays a share.
87491 or its neighbors?
- 87491
- Sensitive chlamydia test from swab or urine
- 87591
- Gonorrhea, same sample, separate line
- 87661
- Trichomonas, another separate line
- 87810
- Rapid in-office chlamydia test, read on site
Picking the wrong neighbor is its own denial category. The chart decides, not the schedule.
Why an STD test lands on the patient
What happens after the swab
Results usually arrive in a day or two, and the outside lab bills separately from the clinic. A positive result brings a treatment visit such as 99213, plus a prescription that runs through the drug benefit rather than the medical one. Partners come in for their own testing, which starts a fresh claim each time, and a recheck a few months later can hit an annual screening limit. Confirming plan status and network before the swab is what keeps a free test free.
87491, quick answers
Is STD testing really free?
For routine screening in the groups the preventive rules cover, most plans pay 100 percent in network. Testing done because of symptoms is billed as diagnostic care, so your normal copay or deductible applies.
Why did my test cost money when my friend's was free?
Almost always the diagnosis on the claim. Screening with no symptoms is preventive, while the same test ordered for symptoms is diagnostic and shares the cost with you.
Does Medicare cover chlamydia testing?
Medicare covers STI screening once every 12 months at no cost for beneficiaries at increased risk, or at certain points in pregnancy, when a primary care provider who accepts assignment orders it. Testing done for symptoms goes to the Part B deductible and 20 percent coinsurance.
Do I have to have symptoms to get tested?
No, routine screening with no symptoms is exactly what the preventive rules cover. The reason recorded in the note drives the diagnosis on the claim, which is what decides the price.
Is the rapid in-office test the same thing?
No. The rapid version is a different code, 87810, and it is less sensitive. Plans handle the two differently, so it is worth asking which one is being run.
More questions? Schedule 15 minutes with us and bring your toughest plan.
Check the plan before the swab, so free screening stays free.
First month free, then $2.50 a check. No seat fees, no contract.
Book 15 minutes, demo or onboarding
Pick a time, then tell us on the form whether it is a demo or an onboarding call.
Related: 87591 · 87661 · 87810
CPT is a registered trademark of the American Medical Association. This page is Valian's own plain-English summary for front-desk teams, not official CPT descriptor text, and is not billing or clinical advice. Coverage patterns are common plan behaviors; every plan differs. Verify benefits before the visit.