When we talk about healthcare cost containment in employee benefits, the conversation almost always lands on network discounts, drug rebates, prior authorization, or wellness incentives. Meanwhile, a silent cost driver lurks in the back office: the actual process of paying a medical claim.
Claims adjudication isn’t a headline-grabber at benefits conferences. But for self-funded employers and their TPAs, the cost to process a single claim averages $7 to $12 in administrative costs alone, depending on system architecture, automation rates, and the complexity of data interfaces.
These costs are embedded in administrative fees, rarely itemized, and almost never scrutinized by plan sponsors. Yet they make up a large and growing share of total administrative spend. The technology underpinning most adjudication systems is also aging, fragmented, and poorly suited to modern benefit design. This creates a hidden tax on every claim, and most benefits leaders don’t realize they’re paying it.
The Three Layers You’re Paying For
To understand where the money goes, it helps to see what adjudication actually entails:
- System processing cost: Machine time, licensing fees, infrastructure (on-premises or cloud), and per-claim transaction fees paid to clearinghouses or vendors.
- Manual intervention cost: The labor required when a claim cannot auto-adjudicate. This includes coding review, medical policy application, coordination of benefits (COB), subrogation investigation, and exception handling.
- Data integration cost: The invisible expense of moving claims data between eligibility files, provider databases, reference pricing tools, clinical programs, and reporting systems. Every interface is a point of friction, often requiring custom mapping and error correction.
A typical TPA or carrier operates on a technology stack built before the ACA, often with a core claims engine running on COBOL or legacy Java, surrounded by a web of bolted-on modules. Each connection is a handshake that can break, requiring human oversight.
Industry benchmarks show that straight-through processing (STP) rates, the percentage of claims that adjudicate without human touch, vary widely. Legacy platforms often automate only 30% to 40% of incoming claims, while modern engines reach 80% to 90% on clean claims. The higher the STP rate, the lower the per-claim cost. Many systems sit at the lower end because their logic cannot handle modern plan designs: consumer-driven health plans with embedded deductibles, non-ERISA carve-outs, value-based care arrangements, and complex copay accumulator programs.
The Compliance Angle No One Discusses
One point almost no one in the benefits space addresses: outdated adjudication systems are a growing compliance liability.
Consider: ERISA requires claims to be handled in accordance with the plan’s governing documents. But when a plan uses a 20-year-old adjudication platform, the system often lacks the flexibility to implement regulations like the No Surprises Act’s independent dispute resolution process, or state-level surprise billing laws, without extensive custom programming. The result is batch fixes, manual overrides, and inconsistent claims payment that exposes plan fiduciaries to lawsuits.
HIPAA transaction standards (EDI 837, 835) evolve slowly, but system updates lag. Many TPAs still use proprietary formats internally that require conversion layers. Each conversion adds latency, error risk, and cost. When an error slips through, say, an incorrect coordination of benefits because the system can’t handle a Medicare secondary payer rule correctly, the downstream cost includes reprocessing, appeals, and potential penalties from HHS.
Self-funded employers pay for these inefficiencies through administrative fees, but they rarely have visibility into the adjudication technology stack when selecting a TPA. They ask about network discounts, stop-loss premiums, and member engagement tools, but never “What is your auto-adjudication rate for professional claims with a non-standard benefit design?”
The Real Dollar Impact
Each manual intervention adds an estimated $15 to $25 to the cost of processing a claim. Automated claims cost a small fraction of that, which is why straight-through processing rates drive the economics.
For a self-funded employer with 500 covered lives and 20,000 claims per year, moving 2,000 claims out of manual review, at a midpoint of $20 a touch, is roughly $40,000 annually in adjudication overhead. At 10,000 lives and 400,000 claims, the same shift approaches $800,000 per year.
And that figure doesn’t include the soft costs of delayed payments, member calls, or provider abrasion.
The Provider Side of the Same Cost
Payer technology is only half the story. Claims that arrive dirty, with missing data, wrong codes, or incomplete documentation, get kicked to manual review no matter how modern the engine is. Premier’s survey of 280 hospitals across 23 states found that claims adjudication cost providers more than $25.7 billion in 2023, up 23% from the prior year, and that 70% of denials were overturned and the claims paid only after multiple rounds of review. Every overturned denial means the payer also paid to review the claim twice, or three times. Clean-claim initiatives, better front-end edits, and fewer avoidable denials cut adjudication cost on both sides of the ledger, and the plan sponsor is the one who pays for the work.
What Modern Adjudication Looks Like
A handful of next-generation platforms treat claims adjudication as a rules engine rather than a monolithic transaction processor. These systems use microservices, real-time eligibility verification, and machine learning to push STP rates toward 90% or higher for clean claims.
Critical features to look for:
- Configurable rules on-the-fly: Plan sponsors can update benefit designs without code changes, reducing implementation lag from months to days.
- Embedded reference data: Provider directories, fee schedules, and medical policies are live within the engine, eliminating interface delays.
- Automated COB and subrogation: Systems that integrate directly with Medicare and state databases to resolve coordination before a claim hits the adjudication queue.
- Real-time claims transparency: Members and employers can see adjudication status instantly, reducing call center volume.
Migration is painful. Few TPAs have the appetite to rip and replace a core system that’s been running for 30 years. But those that have done it report lower administrative fees within two years, plus far fewer disputes and appeals.
Three Questions to Ask Your TPA Today
If you’re a benefits manager, CFO, or trustee overseeing a self-funded plan, ask for these three things:
- What is your straight-through processing rate for our specific plan design? If the answer is “we don’t track that,” that’s a red flag. You’re likely paying for manual touches you don’t know about.
- What is the average and median per-claim cost for our book of business? Request a breakdown by claim type (professional, facility, pharmacy) and by complexity (clean vs. complex). This should be a standard operational metric.
- When was your core adjudication system last replaced or upgraded? If the answer is more than 10 years ago, ask for a roadmap. Legacy systems are not just inefficient; they are brittle in the face of regulatory change.
The Bottom Line
Claims adjudication cost is the quiet leak in the administrative bucket. It won’t show up in a stop-loss premium analysis or a pharmacy rebate report. But for self-funded employers, it represents a real, recurring expense you can cut with better technology choices, if you know to look for it.
The hidden expense of paying a claim is the system that processes it. And in most cases, that system was designed for a world that no longer exists.
This article is for general information only and is not legal, tax, or medical advice. Employers should consult their own advisors.