Short answer up top, then the exact rule. Here's what Original Medicare does and doesn't cover for STD/STI testing in 2026 — and where a Medicare Advantage plan can fill the gap.
Quick answer: Yes — free, with conditions. Part B covers screenings for chlamydia, gonorrhea, syphilis, and/or hepatitis B once every 12 months if you're pregnant or at increased risk, plus up to 2 behavioral counseling sessions a year. You pay $0 when the provider accepts assignment.
Medicare Advantage plans must cover the same screenings and counseling at $0 in-network — it's a required preventive benefit, not a plan extra. The usual MA catch applies: use an in-network lab and in-network primary care provider, or the $0 can turn into a bill.
Anyone on Medicare who is pregnant or whose provider determines they're at increased risk. This is a risk-gated benefit rather than an automatic yearly test, so the determination has to be documented. The counseling half is the part almost nobody uses — it only pays in a primary care setting, not at a specialist or standalone clinic.
See the current Part A, Part B, and Part D numbers — premiums, deductibles, and the new drug cap — in one place. Free, no signup.
See 2026 Medicare Costs →Once every 12 months, or at certain times during pregnancy, if you're pregnant or at increased risk for a sexually transmitted infection. The screenings covered are chlamydia, gonorrhea, syphilis, and/or hepatitis B, and your provider has to order the test.
Yes, you pay nothing for the covered screening when your primary care doctor or provider accepts assignment. The same goes for up to 2 face-to-face behavioral counseling sessions each year, each 20 to 30 minutes, given in a primary care setting.
Coverage gaps in Original Medicare — like STD/STI testing — are exactly what a Medicare Advantage or Medigap plan is meant to fill. Our free Enrollment Finder shows the window you can switch in, and the guide library walks through the trade-offs. This page is free to share with anyone weighing their options.
Open the Enrollment Finder →This answer is based on U.S. government Medicare coverage rules: