Does job-based or Marketplace insurance cover CT scan?

CT scans are usually covered when medically necessary, but you pay part of the cost. A CT scan outside the hospital often needs prior authorization, and you usually pay your deductible and coinsurance. Cost: Expect your deductible, then a copay or coinsurance. Ask the plan for a negotiated estimate before care.

Does Original Medicare cover CT scan?

Yes, Medicare covers medically necessary CT scans. Part B covers diagnostic CT scans ordered by your doctor. Cost: Generally 20% after the Part B deductible.

Does Medicare Advantage cover CT scan?

Yes, Medicare covers medically necessary CT scans. Part B covers diagnostic CT scans ordered by your doctor. Medicare Advantage plans must cover this too, but set their own copays and often require in-network providers and prior authorization. Cost: Your plan’s copay or coinsurance: check the Evidence of Coverage.

Does Medicaid cover CT scan?

Covered when medically necessary, often with prior authorization. Scans like CTs are often reviewed by an outside company the plan hires before they are approved.

Is CT scan covered by insurance?

Computed tomography (CAT scan) imaging. Here’s how each kind of plan usually handles it.

Ask a specific question Plan a visit: cost and doctors Check it against my plan

Employer or MarketplaceCovered with conditions
CT scans are usually covered when medically necessary, but you pay part of the cost.
More details
A CT scan outside the hospital often needs , and you usually pay your and coinsurance.
Cost: Expect your deductible, then a copay or coinsurance. Ask the plan for a negotiated estimate before care.
Original MedicareCovered with conditions
Yes, Medicare covers medically necessary CT scans.
More details
covers diagnostic CT scans ordered by your doctor.
Cost: Generally 20% after the Part B deductible.
Medicare AdvantageCovered with conditions
Yes, Medicare covers medically necessary CT scans.
More details
covers diagnostic CT scans ordered by your doctor. plans must cover this too, but set their own copays and often require in-network providers and prior authorization.
Cost: Your plan’s copay or coinsurance: check the Evidence of Coverage.
MedicaidCovered with conditions
Covered when medically necessary, often with prior authorization.
More details
Scans like CTs are often reviewed by an outside company the plan hires before they are approved.

Plan type	How it’s usually covered
Employer or MarketplaceCovered with conditions	CT scans are usually covered when medically necessary, but you pay part of the cost. A CT scan outside the hospital often needs , and you usually pay your and coinsurance. Cost: Expect your deductible, then a copay or coinsurance. Ask the plan for a negotiated estimate before care.
Original MedicareCovered with conditions	Yes, Medicare covers medically necessary CT scans. covers diagnostic CT scans ordered by your doctor. Cost: Generally 20% after the Part B deductible.
Medicare AdvantageCovered with conditions	Yes, Medicare covers medically necessary CT scans. covers diagnostic CT scans ordered by your doctor. plans must cover this too, but set their own copays and often require in-network providers and prior authorization. Cost: Your plan’s copay or coinsurance: check the Evidence of Coverage.
MedicaidCovered with conditions	Covered when medically necessary, often with prior authorization. Scans like CTs are often reviewed by an outside company the plan hires before they are approved.

What usually has to be true

Your doctor must put the medical reason in writing.
Prior authorization is common for non-emergency CTs.

Good to know

A low-dose lung cancer screening CT can be $0 as preventive care.

MRI · Magnetic resonance imaging (including MRA).
Lung cancer screening · Yearly low-dose CT for people with a significant smoking history.

Sources

Typical rules for 2026 plans, checked against these sources on October 20, 2026. Your plan’s own documents decide.

1
What Marketplace plans cover
HealthCare.gov
Marketplace plans cover outpatient care, hospitalization, mental health care, prescription drugs, rehabilitation, laboratory services, preventive services, and other essential benefit categories.
2
Diagnostic non-laboratory tests
Medicare.gov
Part B covers diagnostic tests such as CT scans, MRIs, EKGs, X-rays, and PET scans when a doctor orders them to treat a medical problem; you generally pay 20% after the deductible.
3
Compare Original Medicare and Medicare Advantage
Medicare.gov
Medicare Advantage plans cover everything Original Medicare covers (except hospice, which Original Medicare continues to pay), usually use provider networks, often require referrals or prior authorization, and may offer extra benefits such as dental, vision, and hearing.
4
Mandatory and optional Medicaid benefits
Medicaid.gov
States must cover mandatory benefits such as inpatient and outpatient hospital care, physician services, laboratory and X-ray services, home health, and nursing facility care; many other benefits, including adult dental, vision, and prescription drugs coverage details, are state options.

General information about how coverage usually works, not a decision about your plan. Your plan documents and insurer have the final word.

Prior authorization: Commonly required; CT scans frequently require prior authorization; emergency CTs do not.
Typical total price: $300 to $3,000; per service, rough national range before insurance
Where to look in your SBC: Imaging (CT/PET scans, MRIs)
Network: Compare an in-network freestanding imaging center with a hospital outpatient department.
Pay with HSA or FSA: Eligible; A qualified medical expense: you can pay with an HSA, FSA, or HRA.

What you’d likely pay

For CT scan, typically $300 to $3,000

Example: you might pay

$1,530

You $1,530Plan $120

$1,500 toward your deductible, plus $30 (20% of the rest).

Based on a $1,650 bill, $1,500 left on your deductible and 20% coinsurance.

These are typical numbers, not your plan’s. Many plans charge a flat copay for visits instead. Use the numbers on your card or plan summary for a real estimate.

Was CT scan denied?Build an appeal with the right deadlines.

Is CT scan covered by insurance?

What usually has to be true

Good to know

Related

Sources