Price Checker / CPT 94729
How much does Diffusing Capacity cost?
CPT 94729 · Based on 2026 Medicare rates and hospital-published pricing
The average hospital charge is around 28x the fair price — among the most extreme markups. Dispute this.
Fair price
$95–$190
What this should cost
With insurance
~$105,300
Typical out-of-pocket
Overcharged if over
$240
Push back above this
The average hospital charge of $3,964 is $3,824 over the fair price (about 28x the fair rate).
What hospitals charge for Diffusing Capacity
From hospital-published transparency (MRF) files. These are the hospitals in our database that list this procedure.
| Hospital | Gross Charge | Cash Rate | vs Medicare |
|---|---|---|---|
| North Arkansas Regional Medical Center Harrison, AR | $17,017 | — | 22693% |
| PeaceHealth Peace Harbor Medical Center , OR | $208 | — | 9111% |
| PeaceHealth Ketchikan Medical Center KETCHIKAN, AK | $294 | — | 8921% |
| UPMC Jameson NEW CASTLE, PA | $1,745 | $1,396 | 2650% |
| Putnam General Hospital EATONTON, GA | $557 | $279 | 778% |
Were you billed for this procedure?
Send us your bill and we'll compare every line item against Medicare rates and your hospital's published prices. Free review, no obligation.
About Diffusing Capacity
CPT code 94729 refers to diffusing capacity (billing description: "Diffusing capacity"). Under the 2026 Medicare Physician Fee Schedule, it is reimbursed at $63 in a facility (hospital or surgery center) and $63 in a doctor's office.
The Medicare rate is the closest thing to an objective "what this work is actually worth." A fair cash price for the uninsured is generally 1.5–3x that rate. Hospital sticker (gross) charges are often far higher — but almost nobody actually pays them.
What to do if you were overcharged
- 1Send us your bill — we'll identify this code and compare it against the rates shown above.
- 2Get a dispute letter — citing the Medicare rate and your hospital's own published pricing data.
- 3We negotiate for you — 25% of savings, no savings = no fee.