Psychiatric evaluation cost in St. Louis, MO
In St. Louis, MO-IL, 5 hospitals list a cash price for psychiatric evaluation with medical services: from $156.65 to $392.81, with a median of $343.50. The lowest listed price is at Mercy Hospital Washington — $186.85 less than the median here. Across Missouri, the median is $187.75 at 12 hospitals.
Cash prices at 5 facilities across 4 cities for code 90792, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 23, 2026; the hospital files themselves were last updated between Jun 12, 2026 and Jun 12, 2026.
Where each hospital's price falls
Each dot is one hospital's cash price on a scale from the lowest to the highest in St. Louis, MO-IL.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list | File date |
|---|---|---|---|---|---|
| Mercy Hospital Washington lowest Washington, MO Psy Diag Inter W/Med Ser Up to 15 Min | $156.65 | $241.00 | $136.97–$226.00 | 35% | — source file |
| Mercy Hospital Washington Washington, MO Psy Diag Inter W/Med Ser Up to 30 Min | $172.90 | $266.00 | $136.97–$226.00 | 35% | — source file |
| Mercy Hospital Washington Washington, MO Psy Diag Inter W/Med Ser Up to 45 Min | $180.70 | $278.00 | $136.97–$226.00 | 35% | — source file |
| Mercy Hospital St Louis Saint Louis, MO Neuropsych Diag Eval W/Med Serv | $185.90 | $286.00 | $135.85–$228.80 | 35% | — source file |
| Mercy Hospital Washington Washington, MO Psy Diag Inter W/Med Ser Up to 60 Min | $191.75 | $295.00 | $136.97–$226.00 | 35% | — source file |
| Mercy Hospital Washington Washington, MO Psy Diag Inter W/Med Ser Up to 75 Min | $211.90 | $326.00 | $136.97–$226.00 | 35% | — source file |
| Mercy Hospital Washington Washington, MO Psy Diag Inter W/Med Ser Up to 90 Min | $237.25 | $365.00 | $136.97–$226.00 | 35% | — source file |
| Mercy Hospital Washington Washington, MO Psy Diag Inter W/Med Ser Up to 105 Mn | $262.60 | $404.00 | $136.97–$226.00 | 35% | — source file |
| Mercy Hospital Washington Washington, MO Psy Diag Inter W/Med Ser Up to 120 Mn | $287.95 | $443.00 | $136.97–$226.00 | 35% | — source file |
| Mercy Hospital Washington Washington, MO Psy Diag Inter W/Med Ser > 120 Min | $313.30 | $482.00 | $31.33–$433.80 | 35% | — source file |
| Mercy Hospital Lincoln Elsberry, MO Psychiatric Diagnostic Eval W/Medical Services | $343.50 | $458.00 | $229.00–$389.30 | 25% | Jun 12, 2026 source file |
| Mercy Hospitals East Communities Washington, MO Psychiatric Diagnostic Eval W/Medical Services | $343.50 | $458.00 | $229.00–$389.30 | 25% | Jun 12, 2026 source file |
| Mercy Hospital Lincoln Elsberry, MO Psychiatric Diagnostic Eval W/Medical Services | $343.50 | $458.00 | $229.00–$412.20 | 25% | Jun 12, 2026 source file |
| Mercy Hospital Lincoln Elsberry, MO Psychiatric Diagnostic Eval W/Medical Services | $343.50 | $458.00 | $229.00–$412.20 | 25% | Jun 12, 2026 source file |
| Mercy Hospital Lincoln Elsberry, MO Psychiatric Diagnostic Eval W/Medical Services | $343.50 | $458.00 | $229.00–$412.20 | 25% | Jun 12, 2026 source file |
| Mercy Hospital Lincoln Elsberry, MO Psychiatric Diagnostic Eval W/Medical Services | $343.50 | $458.00 | $229.00–$412.20 | 25% | Jun 12, 2026 source file |
| Gateway Regional Medical Center Granite City, IL · (618) 798-3000 PSYCHIATRIC DIAGNOSTIC EVAL MED SERVICES | $392.81 | $654.68 | $654.68 | 40% | — source file |
Outpatient: lowest $156.65, median $343.50, highest $392.81 — a 2.5× difference within the same market.
As an inpatient, the same code is billed by 3 facilities here, median $343.50. Inpatient and outpatient prices are not comparable and are kept on separate pages: the inpatient charge covers admission, not the same purchase.
Cash or insurance?
At 5 of 5 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at 1 it is below every plan's rate. If you have insurance but have not met your deductible, you usually pay your plan's negotiated rate, which falls somewhere in the "Insurers pay" column. Paying cash can cost less, but a cash payment usually does not count toward your deductible. Ask the hospital for both numbers before you book.
What it is
A psychiatric evaluation by a psychiatrist or nurse practitioner, with the option to prescribe medicine.
What the price covers
The price is for one session or evaluation.