If you opened a hospital bill and the number didn't seem to match the care you received, you're probably right to be suspicious. Studies estimate up to 80% of medical bills contain errors. Here are the seven reasons bills run high, and which ones you can actually dispute.
When my father died, my mother received a hospital bill for $500,000, and although they had insurance, it was full of errors. I'd spent a career reading contracts and catching billing mistakes in corporate invoices, so I could sort through it. Most people can't, and they pay numbers they never actually owed.
That experience is why the reasons below aren't abstract to me. A hospital bill is a professional-services invoice, and it runs high for the same reasons those invoices do.
Every hospital keeps a master price list called the chargemaster. These "list prices" are routinely marked up many times over the hospital's actual cost and bear little relationship to what insurers or cash-pay patients actually settle for. The sticker price you see is almost never the real price.
A facility fee is a charge for simply walking through the door, separate from the doctor's professional fee. The same procedure done in a hospital-owned clinic can cost dramatically more than in an independent office purely because of this add-on.
Procedures are billed using CPT and HCPCS codes, and each code maps to a price. Upcoding is when a visit is billed under a more intensive (more expensive) code than the care justified, for example, a routine ER visit billed at the highest acuity level.
The same item can appear twice, or a bundled service can be split into separate line items that are each billed individually ("unbundling"). Both inflate the total and both are disputable.
Supplies you never used, medications you declined, or time in a room you never occupied. These slip through constantly, especially after multi-day stays.
An in-network hospital can still staff out-of-network providers (anesthesiologists, radiologists). Federal protections now limit many surprise bills, but only if you recognize one when you see it.
Wrong quantities, transposed digits, the wrong patient's charges. When a bill is high, the dull explanation is often the real one.
You don't have to figure out which of these is happening to your bill on your own. Solomon scans every line, flags the errors and overpriced items against current benchmarks, and writes the dispute letter that cites the specific codes.
Solomon scans every charge against current benchmarks, flags the errors and overcharges, and writes the dispute letter they will answer.
Analyze My Bill →More than most people assume. Because list prices are inflated above what insurers settle for, both cash-pay and insured patients frequently get meaningful reductions once errors and overcharges are identified and challenged in writing.
Don't pay a bill you haven't reviewed line by line. Once you pay, recovering an overcharge becomes much harder. Request an itemized bill first, then dispute before paying.
An itemized bill lists every individual charge with its billing code, instead of a single lump sum. You have the right to request one from the billing department, and you should always do so before paying.
Reviewed and updated 2026-05-31 by Nisha A. Kuttothara, J.D.
Solomon Copilot™