What is spread pricing in pharmacy benefits?

Spread pricing occurs when a PBM charges an employer more for a drug than it pays the dispensing pharmacy, keeping the difference as profit. For example, a PBM might pay a pharmacy $10 for a generic drug but bill the employer $25 — a $15 spread. This practice is legal but hidden in most traditional PBM contracts.

How can employers detect spread pricing in their PBM contract?

Employers can detect spread pricing by requesting a claims audit that compares what the PBM billed versus what pharmacies were actually paid. Look for language in your contract about "ingredient cost" definitions, MAC pricing, and whether the PBM is required to disclose actual pharmacy reimbursement rates. A pass-through contract eliminates spread by requiring the PBM to bill exactly what it pays the pharmacy.

What is the difference between spread pricing and pass-through pricing?

In a spread pricing model, the PBM profits from the difference between what it charges the employer and what it pays the pharmacy. In a pass-through model, the PBM charges the employer exactly what it pays the pharmacy and earns revenue only through transparent administrative fees. Pass-through contracts are offered by transparent PBMs like Navitus, Capital Rx, and RxBenefits.

How much does spread pricing cost employers?

Spread pricing costs vary widely but studies have found spreads ranging from a few dollars to hundreds of dollars per prescription, particularly on generic drugs. For a mid-size employer with 500 employees, spread pricing can cost $100,000–$500,000 annually in hidden PBM profits. The impact is highest on high-volume generic drugs where PBMs have the most pricing flexibility.

Can employers eliminate spread pricing without switching PBMs?

Yes — employers can negotiate a contract amendment requiring pass-through pricing at renewal. However, traditional PBMs (CVS Caremark, Express Scripts, OptumRx) often resist full pass-through terms. The most reliable path is issuing a PBM RFP that includes transparent PBMs, which offer pass-through pricing as their standard model.

Transparency

Spread Pricing in PBM Contracts

Spread pricing is the practice of charging an employer more for a drug than the PBM pays the pharmacy — and keeping the difference. It's one of the most common hidden costs in traditional PBM contracts, and it's entirely legal.

How spread pricing works

PBM pays pharmacy for generic drug:$8.00

PBM charges employer for same drug:$25.00

PBM spread (profit):$17.00 (68%)

Multiply this across thousands of claims per year and the spread adds up to significant hidden costs. Studies have found spread pricing adds 5–15% to total pharmacy costs for employers with traditional PBM contracts.

How to detect spread pricing

Detecting spread pricing requires comparing what your PBM charges you (the "amount billed") to what the PBM pays the pharmacy (the "ingredient cost" or "MAC price"). This data is often not provided in standard reporting — you need to request it specifically or exercise your audit rights.

A PBM audit by a specialized pharmacy analytics firm can quantify your spread exposure and provide the documentation needed to renegotiate your contract.

How to eliminate spread pricing

The only way to eliminate spread pricing is a pass-through (transparent) PBM contract. In a pass-through contract, the employer pays the actual ingredient cost plus a flat dispensing fee — no spread. The PBM charges a flat administrative fee per claim instead of profiting from the spread.

Related tools

PBM Contract IQ™

Detect spread pricing clauses in your current PBM contract with AI review.

PBM Comparison Tool

Compare pass-through PBMs that eliminate spread pricing entirely.

PBM Savings Calculator

Estimate how much spread pricing is costing your plan today.

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