Magnesium sulfate 2 gram/50 ml (4 %) in water intravenous piggyback at Mercy Rehabilitation Hospital South

10114 Kennerly Road St., Louis, MO · Mercy · · NPI 1992435895

Source: hospital's published price file ↗ · Published Mar 16, 2026 · Ingested Sep 8, 2026

not published by hospital

Cash price

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Discounted cash price

What a hospital charges a self-pay patient who pays directly, without going through insurance — usually well below the gross charge.

Example: A CT scan has a $3,200 gross charge but an $850 discounted cash price. Ask for it by name when scheduling — hospitals don't always advertise it up front.

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What you pay up front if you don't use insurance.

not published by hospital

Gross charge

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Gross charge (chargemaster price)

The hospital's full, undiscounted list price — pulled from its internal "chargemaster" price list. Almost no one actually pays this.

Example: A chest X-ray has a gross charge of $1,450. The same hospital's discounted cash price for the same X-ray is $180 — the gross charge mostly anchors negotiations, not what patients pay.

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The hospital's undiscounted list price — almost no one pays this.

$15.98 with Devoted Health vs $15.98 with UHC Medicare — same scan, same building. Share

Negotiated rates by payer
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Negotiated rate

The price a specific insurance plan agreed to pay the hospital for a service — it varies by insurer, and even by plan within the same insurer.

Example: The same knee MRI has a negotiated rate of $904 with one insurer's PPO plan and $1,509 with another's — identical hospital, identical scan.

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Payer
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Payer

The insurance company footing the bill — Aetna, UnitedHealthcare, Medicare, and so on.

Example: "Blue Cross Blue Shield" is the payer. Its negotiated rate for an MRI might be $904, while a different payer's negotiated rate for the same scan is $1,509.

Full explanation →
Plan
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Plan

The specific product an insurer sells — e.g. "Blue Cross PPO 500" — which sets your deductible, coinsurance and negotiated rates.

Example: Two people both insured by Aetna can owe very different amounts for the same MRI: $50 with an HMO plan's flat copay, or the full $1,200 toward a high-deductible PPO plan's unmet deductible.

Full explanation →
Negotiated rate vs. cash
Devoted Health Devoted Health $15.98
Wellcare Wellcare $15.98
Medica Medica $15.98
Tricare Tricare $15.98
Ambetter Ambetter $15.98
Cigna Cigna $15.98
UMR CPD UMR CPD $15.98
Aetna Medicare Aetna Medicare $15.98
Aetna/ Managed Choice POS Elect Choice and PPO Products Aetna/ Managed Choice POS Elect Choice and PPO Products $15.98
Aetna/Commercial Product Aetna/Commercial Product $15.98
Anthem Alliance Anthem Alliance $15.98
Anthem Blue Access Anthem Blue Access $15.98
Anthem Blue Access Choice Anthem Blue Access Choice $15.98
Anthem Blue Preferred Anthem Blue Preferred $15.98
Anthem Medicare Anthem Medicare $15.98
Anthem Pathway Anthem Pathway $15.98
Cigna Medicare Advantage Cigna Medicare Advantage $15.98
Cigna PPO Cigna PPO $15.98
Essence Essence $15.98
Healthlink HMO Healthlink HMO $15.98
Healthlink PPO Healthlink PPO $15.98
Healthy Blue (Missouri Care) Healthy Blue (Missouri Care) $15.98
HomeState Health Plan HomeState Health Plan $15.98
Humana Gold Humana Gold $15.98
Medicaid MO Medicaid MO $15.98
Meritain Health CPD Meritain Health CPD $15.98
Meritain Health PPO CPD Meritain Health PPO CPD $15.98
Starmark CPD Starmark CPD $15.98
UHC All Payer UHC All Payer $15.98
UHC Exchange UHC Exchange $15.98
UHC Medicaid UHC Medicaid $15.98
UHC Medicare UHC Medicare $15.98

Visitor-reported prices

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Magnesium sulfate 2 gram/50 ml (4 %) in water intravenous piggyback at other Missouri hospitals

Hospital City Cash price Negotiated range
Mercy Hospital Aurora Aurora $46.85 $0.82 – $3.82
Mercy Hospital Lincoln Troy $40.95 $1.10 – $1.10
Mercy Hospital Carthage Carthage $27.04 $0.82 – $1.46
Mercy Hospital Southeast Cape Girardeau $50.37 $1.70 – $1.70
Mercy Orthopedic Hospital Springfield Ozark $38.08 $0.82 – $1.96

All Missouri hospitals for this procedure →