$450 or $2,141? Same MRI, Two St. Louis Bills
Revised October 19, 2026
What is the cost of diagnostic imaging?
Diagnostic imaging costs depend on the scan and the building it happens in. X-rays cost the least, ultrasounds and mammograms sit in the middle, and CT and MRI scans cost the most. In St. Louis, Signature Orthopedics posts $450 for any self-pay MRI without contrast, radiologist’s reading included, while BJC’s estimates cover hospital costs only. Get a written self-pay estimate before you book.
Keep reading ↓The printer behind the front desk whirs, and the order comes across the counter still warm: MRI, lumbar spine, without contrast. “Imaging will call you to schedule,” the receptionist says. Nobody says a number. You fold the paper into your coat pocket, walk out into the parking garage that smells like exhaust and cold concrete, and sit in the car a minute longer than you need to. Your back still hurts. Now your stomach does too.
Four hundred dollars. If you’re paying cash for a scan in St. Louis, that’s how far your bill has to land over a written good faith estimate before you can formally dispute it, and most people walking out of an exam room never hear about the estimate, let alone the line.
That quiet in the car is where most St. Louis imaging bills are really decided, long before the scanner or the billing office. It happens in the gap between the order and the phone call, while you still get to choose where the picture gets taken. And in this town the choice is not small: the same lumbar MRI without contrast is posted at $450, radiologist’s read included, at one independent orthopedic group, and at $2,141 cash at Mercy Hospital St. Louis. Same order. Same spine. You just haven’t been told yet.
Here is the thing almost nobody at the front desk tells you. If you are paying cash or have no insurance, and you book a scan at least three business days out, federal rules say the provider owes you a written good faith estimate of the charges. Keep that piece of paper. If the final bill lands at least $400 over it, the Centers for Medicare & Medicaid Services lets you start a formal dispute, as long as the bill is dated within the last 120 calendar days. Three business days. Four hundred dollars. One hundred twenty days. Those are the numbers worth more than any price list, and you can write them on the back of that warm order before you even start the car.
Have insurance? That federal estimate rule is built for cash and self-pay patients, so your door is a different one. Missouri’s Department of Commerce and Insurance welcomes questions and complaints from anyone who thinks an insurer treated them unfairly, and its Insurance Consumer Hotline is 800-726-7390. Put it in your phone before the bill comes, not after.
The second thing: the same scan really does wear more than one price tag, and here the tags have names. ClearPrice, a tracker that reads the price files hospitals are required to post, lists this exact scan, a lumbar MRI without contrast, at $2,141 cash at Mercy Hospital St. Louis and $952 cash at St. Luke’s Hospital. Write both numbers on the back of that warm order and the paper suddenly feels heavier in your hand. The radiologist looks at the same gray slices either way. The building is what changed.
The hospitals will tell you their side of the number if you ask. BJC HealthCare’s cost estimator line is 314-747-8845 (toll-free 844-747-8845), and the form asks for the CPT code on your physician order - the same code you’ll read to every other place you call. Listen for the fine print, because BJC spells it out: that estimate covers hospital costs only, not the physician or other professional fees billed separately by other providers. Translation, in plain St. Louis: the radiologist’s read is its own envelope. If you have no insurance at all, Affinia Healthcare runs clinics around the metro, from South Broadway to Page Avenue, with a sliding fee scale and a stated promise to see patients regardless of their ability to pay. Their line is 314-814-8700.
Now the other side of that gap, in writing. Signature Orthopedics, part of an independent, physician-owned St. Louis group, posts its self-pay MRI rates online: any MRI without contrast, $450, and the price is all-inclusive, radiologist’s reading included. One envelope, not two. That’s their posted price, so confirm it when you call 314-849-0311. Book there or not, that posted number is the yardstick you hold up to every other quote. Hold it up next to those two hospital numbers: $450, $952, $2,141. Those files get updated, so treat every number as a starting point and confirm it on the phone. Three prices for one picture, and the cheapest is the one nobody at the front desk mentioned. Three phone numbers, and you haven’t even pulled out of the garage.
What is the cost of diagnostic imaging?
Diagnostic imaging costs depend on the scan and the building it happens in. X-rays cost the least, ultrasounds and mammograms sit in the middle, and CT and MRI scans cost the most. In St. Louis, Signature Orthopedics posts $450 for any self-pay MRI without contrast, radiologist’s reading included, while BJC’s estimates cover hospital costs only. Get a written self-pay estimate before you book.
I won’t hand you a price chart, and here’s why. Any number printed on a blog is stale the day after it goes up, and it was never your number anyway. Your number turns on the body part, whether contrast dye goes in your arm, your deductible, how far into the plan year you are, and which door you walk through. A scan “with contrast” costs more than one without. The radiologist who reads the images may bill you separately, on a different envelope, weeks later. The only figure that means anything is the one a facility puts in writing for your exact order.
What you can know today is the ladder. An X-ray is the quick one - a cold plate against your skin, a held breath, done before you’ve finished being nervous. Ultrasound is the warm gel and the wand and the tech who won’t tell you what the screen shows; it uses sound waves, not radiation, and still lands on the lower rungs for most exams. CT is the doughnut you slide through in a few minutes, and the price climbs with the region scanned and the contrast. MRI is the long one. The knocking, the earplugs, the narrow tube, twenty or forty minutes of holding still while the machine hammers around you. It is usually the priciest rung, and the one where a couple of phone calls pay you back the most.
Mammograms get their own rule. Marketplace health plans and many other plans must cover a screening mammogram every 1-2 years for women 40 and older without charging a copayment, as long as it’s done by an in-network provider. A diagnostic mammogram - the one ordered after a lump, or after a screening that came back with a question - is billed differently and can carry a cost. Ask which one is on your order. The word on the paper decides the bill.
Why the hospital charges more for the same picture
A hospital keeps the lights on for everything: the emergency room at 3 a.m., the overnight staff, the trauma bay that has to be ready whether anyone comes through the doors or not. When you get a routine scan in a hospital outpatient department, part of that weight can show up on your bill as a facility fee. A freestanding imaging center does one job. It takes pictures, sends them to a radiologist, and locks up at night. Leaner building, leaner price, same image.
That overhead is part of why two St. Louis hospitals can post prices more than a thousand dollars apart for one scan. There’s a catch, and it’s a quiet one. If your doctor works inside a big hospital network, the order tends to route to that same network’s imaging department by default. Nobody is hiding anything. It is just the path of least resistance, and it is usually the pricier one. For a routine, scheduled scan, you can ask your doctor to send the order to an independent center instead, as long as your insurer will cover it there. The system rarely volunteers the cheaper door. You have to knock on it.
Hospitals do have to show their hand, at least on paper. Under the federal hospital price transparency rule, every hospital must post its standard charges online, including a display of shoppable services in a consumer-friendly format. Search the hospital’s name plus “price transparency” and you can often find the line for your scan before you ever call. It is clunky. It also gives you a number to hold up against the imaging center’s quote.
How can you pay less for imaging in St. Louis?
Treat the scan like a used car, not a vending machine. You compare before you commit. You can make every one of these moves from the kitchen table, with the order in front of you and a pen that works.
Get the billing code first
Call the doctor’s office and ask for the procedure code on your order - they may call it the CPT code. It pins down exactly which scan you’re getting, so “MRI, lower back” at one place and “MRI, lower back” at another are truly the same thing. Read that code to every place you call. Now you’re comparing apples to apples, not a vague word to a vague word.
Ask for the self-pay price - out loud
Many imaging centers have a cash rate that never comes up unless you say the words. If you have a high deductible you haven’t touched yet, the self-pay price can come in under what your plan would leave you owing. Ask for both numbers. If the cash rate wins, you can choose it, though it may not count toward your deductible. That trade is yours to make, and it is a real one in January, when the deductible is a wall in front of you.
Call three places and write it down
Two freestanding centers and the hospital. Same code, same question, same notepad balanced on your knee in the break room, or on the seat beside you on the bus up Grand. If you’re calling BJC, you already have the estimator number from the top of this page; use the same script. Write the name, the quote, and whether it includes the radiologist’s read. The gap on a CT or MRI can make you put the pen down and stare at it. Comparing like this is a habit worth keeping for more than scans, from lab work to routine dental services around your area. A few calls on a lunch break can save more than the lunch break earns.
Got the code and a notepad? Start your calls here. Browse diagnostic imaging providers across the St. Louis metro on St Louis Near Me Directory, pick two or three near you, and ask each one for the self-pay price on that exact code.
If you’re the imaging center, the mobile ultrasound tech or the one-person billing advocate these callers are looking for, make sure your name is the one they land on. A listing that answers the price question puts you in front of more customers who are ready to book - claim your spot, or see who AI names instead of you.
The five questions to ask before anyone says “we’ll see you Tuesday”
Imaging bills often arrive in pieces. One for the scan. One from the radiologist who reads it. Sometimes a facility fee riding on top. If you only ask about “the MRI,” you can hear one number on the phone and open three envelopes later. So before you agree to a time slot, ask: What is the total for this exact code? Is the radiologist’s reading fee included? Is contrast included? What is your self-pay rate? And will you send that to me in writing?
That last one matters most if you’re paying cash. Schedule at least three business days out and the provider owes you that good faith estimate anyway. If you book on shorter notice, you are not entitled to one, so ask for it before you take the Tuesday slot. Without the estimate, you can’t dispute the bill later. Snap a photo of it on your phone the day it arrives. Paper gets lost under the fruit bowl; the photo doesn’t.
Using insurance? Make one more call, to the number on the back of your card, and confirm the center is in network. An in-network scan is billed at your plan’s negotiated rate. An out-of-network scan can cost far more, even on a good plan. Two minutes on hold with the hold music looping is cheap insurance against that envelope.
People are asking
Does insurance usually cover imaging?
When your provider orders a CT scan, MRI, X-ray or PET scan to find or treat a medical problem, Medicare Part B covers it, and its rules show where the bill splits: after the Part B deductible you pay 20% of the Medicare-approved amount in a doctor’s office or an independent diagnostic testing facility, but take the same test at a hospital as an outpatient and you also owe the hospital a copayment that may be more than 20%. Outside a hospital, Medicare pays for a CT, MRI, nuclear medicine or PET scan only if the provider is accredited, so ask that before anyone hands you the earplugs; if Medicare won’t pay because they weren’t, the provider can’t bill you for the test. On most private plans, the federal No Surprises Act protects you from out-of-network charges for care related to a visit to an in-network hospital, hospital outpatient department or ambulatory surgical center, and CMS lists radiology among the services whose providers aren’t allowed to ask you to sign a notice and consent form giving that protection up.
What if you don’t have insurance?
Then you have more leverage than you think, and the worst move is the one people make most: putting the order in a drawer and hoping the pain fades. Tell the imaging center up front that you’re uninsured. Ask for the self-pay rate, whether there’s a discount for paying in full, and whether they’ll set up a monthly plan if paying in full isn’t possible. Get the good faith estimate. Keep it.
Run an imaging center? The patients making these calls want straight answers about price - here’s where to start writing them.
If the scan has to happen at a hospital, call the billing office before the appointment and ask for the financial assistance policy. Nonprofit hospitals are required by the IRS to widely publicize their financial assistance policy, including who qualifies for free or discounted care. You don’t have to beg for it. You just have to ask for the application.
Focused on an MRI in particular? Here’s what an MRI costs in St. Louis and how to pay less.
And lean on the local safety net. St. Louis has clinics that help people find affordable care, and some can steer you toward lower-cost imaging. Start with our guide to free and low-cost health clinics in St. Louis. If a longer fix would help, check whether you qualify to apply for Medicaid through MO HealthNet, Missouri’s Medicaid program. None of this is medical advice. It is just the set of questions that turns a warm piece of paper into a bill you saw coming.
Frequently asked questions
Is an imaging center cheaper than a hospital?
Often, yes. For a routine, scheduled scan, an independent center can quote a lower self-pay price for the identical image. Compare written estimates using the same procedure code so you’re matching the same scan.
How much should an MRI cost out of pocket?
There’s no single right number. What you owe depends on your plan, how much of your deductible is left, the body part, contrast, and the facility. Ask for the cash price and your insured cost, get both in writing, and pick whichever is lower for you.
Why are MRIs so expensive with insurance?
Usually because the scan lands on your deductible before coverage kicks in, and hospital-based scans may add a facility fee. On a high-deductible plan, you carry more of the cost early in the plan year. Sometimes a center’s self-pay rate beats your insured cost, so compare both before you book.
What is the typical cost of an MRI scan without insurance in the US?
It swings widely, and freestanding cash-pay centers usually sit well below hospital prices for the same scan. Because no national average will match your order, call several centers with your procedure code, ask for written self-pay quotes, and keep the good faith estimate you’re owed when you book ahead.
How much does a full body diagnostic scan cost?
A full-body scan is usually an elective, self-pay service, since insurance rarely covers screening without symptoms. Prices vary by facility and by what’s included, so the only reliable figure is a written quote. Ask whether a radiologist’s read is included and get the total in writing before booking.
Which is healthier, MRI or CT scan?
Neither is simply healthier. They answer different questions, and your doctor picks the tool for what needs to be seen. An MRI uses powerful magnets and radio waves and no ionizing radiation; a CT uses X-rays. Follow your provider’s recommendation rather than choosing on cost alone.
Written by a dedicated team of St. Louis locals who live, work, and play right here in the St. Louis metro. Founder Lane Forman and team are committed to building the region’s most trusted directory by verifying listings and connecting local businesses with loyal customers across Missouri and Illinois.