Diagnostic mammogram, both breasts at Mercy Hospital St. Louis
CPT 77066 · Saint Louis, MO
These are Mercy Hospital St. Louis's own posted figures from its standard-charges file dated June 4, 2026. They are not a quote. Source: the hospital's file · its price transparency page.
Across 12 Missouri hospitals we index that post a cash price for this service: lowest $292.80, median $326.30, highest $455.65. See every hospital.
Nearby hospitals, same service
| Hospital | Distance | Cash price | Gross charge | File date |
|---|---|---|---|---|
| Barnes-Jewish West County Hospital Creve Coeur, MO | 0.0 mi | $292.80 | $488.00 | 2025-12-15 |
| Missouri Baptist Medical Center Saint Louis, MO | 3.0 mi | $292.80 | $488.00 | 2025-12-15 |
| Barnes Jewish Hospital Saint Louis, MO | 10.4 mi | $319.80 | $533.00 | 2025-12-15 |
| Mercy Hospital South Saint Louis, MO | 12.1 mi | $419.90 | $646.00 | 2026-06-10 |
| Christian Hospital Northeast Saint Louis, MO | 12.1 mi | $292.80 | $488.00 | 2025-12-15 |
| Barnes-Jewish St. Peters Hospital Saint Peters, MO | 13.0 mi | $292.80 | $488.00 | 2025-12-15 |
| Progress West Hospital Ofallon, MO | 16.1 mi | $292.80 | $488.00 | 2025-12-15 |
| Gateway Regional Medical Center Granite City, IL | 19.6 mi | $246.89 | $411.49 | 2026-03-30 |
Distances are straight-line from ZIP code centers. Each hospital's figures come from its own file; files are updated on different dates.
Every row for CPT 77066 in this hospital's file
| Row in the hospital's file | Setting | Cash | Gross | Insurer min – max |
|---|---|---|---|---|
| Mamm Diagnostic Bilat W Cad line 2372325 | outpatient | $372.45 | $573.00 | $103.80 – $506.22 |
| Mamm Diagnostic Bilat W Cad line 2372766 | outpatient | $372.45 | $573.00 | $37.25 – $573.00 |
| Mamm Diagnostic Bilat W Cad line 5109302 | outpatient | $372.45 | $573.00 | $293.00 – $336.00 |
The first row is the one used above. A price for one code usually covers the hospital's facility charge only; the doctor, anesthesia, pathology and other services can be billed separately. Ask the hospital for a good faith estimate before a scheduled service: if you pay yourself and the bill comes in $400 or more above the estimate, you can dispute it under the No Surprises Act.
Check a bill from this hospital All Mercy Hospital St. Louis prices