Colonoscopy (Diagnostic) Cost in Maryland
Diagnostic colonoscopy
$1,115Hospital outpatient total2026 Medicare, physician + facility- ✓Your ZIP's wage-adjusted hospital and surgery centre rates
- ✓Five nearby hospitals by name, with CMS star ratings
- ✓The add-on codes that typically land on the bill
- ✓A word-for-word script for asking for a good-faith estimate
- ✓A private link you can reopen and share
- ✓Everything in the Premium report
- ✓15 nearby hospitals instead of five
- ✓Filled good-faith-estimate request letter
- ✓Bill-negotiation letter
- ✓Printable PDF download
Maryland Medicare physician rate (2026)
+3.5% vs nationalAverage of 2 localities. Office range $381.14–$401.89.
What the whole procedure costs
The rate above is the physician’s fee on its own. The facility bills separately, and for most procedures the facility is the larger half of the bill. These are 2026 national Medicare amounts.
Choosing a surgery centre over a hospital saves about $440 on the Medicare allowed amount for colonoscopy (diagnostic). Ask whether your procedure can be done at an ambulatory surgery centre.
This is Medicare's separate payment to the facility on top of the physician's fee. Medicare allowed amounts are not what an uninsured patient is charged, and not a quote. Private plans typically allow more.
Your ZIP in Maryland
A ZIP lookup matters in Maryland because three different locality treatments are in play: check whether you fall in the Baltimore area, the DC suburbs like Bethesda and Silver Spring, or rest-of-state regions like Frederick, Hagerstown, and the Eastern Shore.
What colonoscopy (diagnostic) costs at hospitals near you
Everything above is a national average. The hospital you pick in Maryland moves the bill more than anything else you control.
Rates for your ZIP, 5 named hospitals with CMS ratings, the add-on codes, and the scheduler script.
One-off payment, no account and no subscription. You get a private link and an email. No medical records and no insurance card, ever.
What these numbers are
Every figure on this page is a 2026 Medicare allowed amount: the physician line comes from the Physician Fee Schedule adjusted by geographic practice-cost indices, and the facility totals come from the CMS hospital outpatient (OPPS) and ambulatory surgery centre rates. None of them is a hospital chargemaster price, your insurer's contracted rate, or a quote. Anesthesia, pathology, imaging reads and follow-up care are billed under their own codes when they apply, and an inpatient stay is paid a different way again. In Maryland the office and hospital physician lines for this CPT differ by $222.51.
National vs Maryland
Where Maryland ranks for this CPT
CPT 45378 by Maryland locality
| Locality | Office |
|---|---|
| baltimore/surr. cntys | $401.89 |
| rest of maryland | $381.14 |
PE GPCI ranges from 1.012 to 1.073 in Maryland. That index is why the same CPT is not one price statewide.
Colonoscopy (Diagnostic) and how Maryland is priced
Maryland's Medicare physician pricing is split geographically: Baltimore and its surrounding counties form one locality, the rest of the state another, and, unusually, the Washington suburbs including Montgomery and Prince George's counties are priced inside the District of Columbia's high-cost locality rather than either Maryland one. That three-way carve means a Rockville procedure is approved at DC-area rates while an identical one in Frederick or Salisbury is not. Baltimore-area adjustments sit above rest-of-state levels but below the DC locality. Few states have their pricing shaped this much by a neighboring jurisdiction.
Maryland is also the only state with an all-payer rate-setting system for hospital services, so hospital-side billing works differently here than anywhere else in the country, though physician fees still follow the standard Medicare schedule. Baltimore's academic medical centers rank among the most prominent in the world and draw patients globally. The Eastern Shore and western Maryland are far more rural, with patients often traveling to Baltimore, Annapolis, or across state lines.
This procedure: A diagnostic colonoscopy examines the entire large intestine with a flexible camera inserted through the rectum, looking for the cause of symptoms such as bleeding, chronic diarrhea, or abdominal pain, or following up an abnormal stool test. You complete a bowel-cleansing prep the day before, receive IV sedation, and the exam takes 20 to 45 minutes. This specific code means the doctor looked but did not remove or sample anything; you go home the same day with a driver.
What Is Colonoscopy (Diagnostic)?
A diagnostic colonoscopy examines the entire large intestine with a flexible camera inserted through the rectum, looking for the cause of symptoms such as bleeding, chronic diarrhea, or abdominal pain, or following up an abnormal stool test. You complete a bowel-cleansing prep the day before, receive IV sedation, and the exam takes 20 to 45 minutes. This specific code means the doctor looked but did not remove or sample anything; you go home the same day with a driver.
What Affects the Cost
- –Facility setting is the dominant variable: hospital outpatient departments routinely charge several times what freestanding endoscopy centers do.
- –Anesthesia billed separately, particularly monitored propofol sedation, adds a meaningful independent charge.
- –If any polyp or tissue is encountered and removed, the procedure converts to a higher-paying code (45380 or 45385) plus pathology fees.
- –The bowel prep kit may be a pharmacy cost, with prescription-only preps costing more than over-the-counter regimens.
- –A pre-procedure consult with the gastroenterologist is often billed as its own office visit.
Questions to Ask Before Booking
- 1.Is my procedure being ordered as diagnostic or screening, and what exactly will I owe under each?
- 2.If this follows a positive Cologuard or FIT test, will it be billed with the screening modifier so my cost sharing is waived?
- 3.What are the facility fees at the hospital versus the endoscopy center you use?
- 4.Who provides sedation and are they in network?
- 5.If you find and remove a polyp, what does my estimate become?
Other featured procedures in Maryland
Colonoscopy (Diagnostic) in other states
Colonoscopy (Diagnostic) in Maryland: questions
The 2026 Medicare physician office rate for CPT 45378 averages $391.52 across 2 Maryland localities, from $381.14 in REST OF MARYLAND to $401.89 in BALTIMORE/SURR. CNTYS. The hospital physician rate averages $169.01. Enter a ZIP for the exact locality.
Yes. CMS splits Maryland into 2 payment localities. For this CPT the office physician fee spans $20.75 from the lowest to highest locality. A ZIP lookup matters in Maryland because three different locality treatments are in play: check whether you fall in the Baltimore area, the DC suburbs like Bethesda and Silver Spring, or rest-of-state regions like Frederick, Hagerstown, and the Eastern Shore.
After the Part B deductible, coinsurance is usually 20% of the allowed amount: about $78 for the office physician line or $34 for the hospital physician line in Maryland. Medigap may cover that 20%. This is not the hospital facility fee.
No. $391.52 is only the physician's share. Adding Medicare's facility payment brings the total to about $1,115 in a hospital outpatient department, or about $675 at an ambulatory surgery centre. Anesthesia, pathology and other codes billed the same day are extra. Maryland ranks #41 of 51 states on the physician line (4% above the national office rate of $378.10).