Scans and imaging CPT 77066 Outpatient

Diagnostic mammogram, both breasts in Helena, MT

In Helena, MT, 1 hospital lists a cash price for Diagnostic mammogram, both breasts: from $229.75 to $229.75, with a median of $229.75.

Cash prices at 1 facility for code 77066, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 22, 2026; the hospital files themselves were last updated between — and —.

Lowest$229.75St. Peter's Health
Median$229.75half pay less
Highest$229.75in this market
Difference1.0×highest vs lowest

Where each hospital's price falls

Each dot is one hospital's cash price on a scale from the lowest to the highest in Helena, MT.

median
Lowest $229.75Highest $236.27
one sideboth sides

Hospitals, cheapest first

HospitalCash price List priceOff listFile date
St. Peter's Health lowest Helena, MT OTHER IMAGING SERVICES - DIAGNOSTIC MAMMOGRAPHY $229.75 $270.30 15%
source file
St. Peter's Health both sides Helena, MT HC DIAG MAMMO, BILATERAL INCL CAD WHEN PERFORMED $236.27 $277.97 15%
source file

Both sides : lowest $236.27, median $236.27, highest $236.27.

Outpatient: lowest $229.75, median $229.75, highest $229.75.

The two groups are not comparable and are not averaged together: a price for both sides of the body covers twice the work. Merging them is how a single published "median" ends up far above what one side actually costs.

As an inpatient, the same code is billed by 1 facility here, median $236.27. Inpatient and outpatient prices are not comparable and are kept on separate pages: the inpatient charge covers admission, not the same purchase.

What it is

A diagnostic mammogram of both breasts is an X-ray exam done to look into symptoms or to follow up on something seen on an earlier mammogram. It uses more targeted views than a routine screening exam.

What the price covers

The hospital price usually covers the imaging of both breasts, including computer-aided detection when used. The radiologist's reading is often billed separately, and 3D mammography or a breast ultrasound is billed under other codes.