Pre-pay coordination of benefits (COB) is now widely offered. Most vendors describe similar capabilities: identifying overlapping coverage, flagging potential opportunities, and reducing overpayments before a claim is paid.
What differs is execution.
In a previous blog, we explored how pre-claim, pre-pay, and post-pay work together as a complete COB program, and why no single stage is sufficient on its own.
The harder question is which vendors can actually deliver on that model.
Most vendor evaluations focus on post-pay recovery alone, but this is the wrong strategy. Evaluating vendors for a complete COB program comes down to whether they can operate pre-claim investigation, pre-pay review, and post-pay recovery as a connected model. Not three separate services.
Solutions that run only one stage create gaps. Solutions that connect all three capture the most value.
Why most COB programs still fall short
Many pre-pay COB programs fall short because execution breaks down before a claim is paid. These programs are often data matching exercises, in which overlaps are surfaced using eligibility data or confidence-based scoring. That output does not change payment outcomes on its own.
In many implementations, that step does not happen in time. The payer receives a stream of alerts, but the responsibility to validate, investigate, and act still sits inside their operation.
That gap shows up in workflows. Investigations extend beyond claim timelines, data remains incomplete at the point of decision, and outreach happens too late or not at all. The result is predictable. The program generates activity without changing outcomes. Alerts increase workload. They do not increase savings.
When evaluating vendors, the focus should be on whether they can operate all three stages as a connected model, and whether each stage produces verified decisions, not just signals.
What a complete COB program actually requires
A complete COB program operates across all three stages of the claim lifecycle. Pre-claim establishes primacy in advance through continuous monitoring of member eligibility signals. So when a member seeks care, coordination is already in place. Pre-pay applies that determination at adjudication, finalizing any unresolved cases before payment is released. Post-pay handles what can't be resolved upstream.
That shift introduces real operational constraints. Decisions must be made within claim processing timelines. Straightforward cases are typically resolved the same day. More complex cases are handled within defined claim pend windows, often within 48 hours, depending on outreach and state requirements. Investigations must either complete before the claim reaches the payment queue or transition seamlessly into post-pay recovery when time runs out.
Detection timing directly shapes outcomes. The earlier coverage is identified, the more value is retained and the less the program depends on downstream recovery.
Signal vs. noise: what actually matters when coordinating benefits
In pre-pay COB, signals are unverified indicators of overlapping coverage, while decisions are validated determinations that can be applied before payment. The difference determines whether a program reduces overpayments or generates additional workload without financial impact.
Signals include eligibility matches, unverified overlaps, and alerts that require additional payer effort before action. These outputs create volume but do not change financial outcomes without a completed investigation.
Decisions reflect verified additional coverage, a completed primacy determination, and an action applied before payment. This is what reduces overpayments.
The inputs that generate the signal are tied to real coverage changes.
Types of signals tied to coverage changes
The following signal types can all point to potential overlap in coverage:
- name changes
- address updates
- employer transitions
- dependent additions
- pregnancy indicators
- Medicare eligibility
- disability status
These inputs only create value when they lead to verified conclusions and can be applied before payment. The objective is correct payment. Most vendors generate signals. Fewer produce decisions.
The questions in the next section help distinguish vendors that run a complete connected model from those that deliver one stage at a time.
COB vendor evaluation checklist: questions every payer should ask
Use this checklist as a working evaluation guide to assess whether a vendor can operate pre-claim, pre-pay, and post-pay as a connected model, and convert identified overlap into verified decisions at each stage.
Program completeness
- Does your model include pre-claim investigation, pre-pay review, and post-pay recovery as a single program, or are these separate services?
- How does pre-claim investigation feed into pre-pay? Can you demonstrate how upstream investigation reduces time pressure at adjudication?
- Is post-pay recovery included in the same fee structure, or priced separately?
Speed to value
- How quickly can a verified primacy determination be applied at adjudication?
- What percentage of cases already have a determination in place when the claim arrives?
- What requires a pend, and how long do those pends last?
Accuracy and methodology
- Are decisions based on verified facts or probability scores?
- What is your false positive rate?
Operational fit
- How do you operate within prompt pay requirements across states?
- What happens when a case cannot be resolved in time?
Value realization
- What percentage of value is captured pre-pay versus post-pay?
- How much value still depends on recovery?
Process rigor
- What does the investigation process include (outreach, validation, cross-payer confirmation)?
Risk mitigation
- What happens when a case is missed?
- Is post-pay recovery included as part of the model?
What proof matters when evaluating payment integrity vendors
Many vendors present modeled savings, per member per month (PMPM) estimates, and projected opportunity. These inputs describe what might be possible. They do not reflect what has actually been delivered.
Evaluation should start with historical performance.
- What was identified over the past 12 months?
- What was recovered from that population?
- What was not recoverable to provide a grounded baseline?
That baseline can then be translated into a complete program scenario.
In practice, 70-80% of those overpayments can be prevented before payment. Those prevented dollars are captured at full value. The remaining 20-30% continue through post-pay recovery.
The net effect is a 15-25% increase in total savings, with vendor spend remaining relatively stable, depending on provider leakage and claim mix.
Proof includes downside protection
Pre-pay COB does not eliminate uncertainty. Some overlaps cannot be identified at the time of investigation.
Coverage can be introduced retroactively, creating an overlap that did not exist when the original decision was made. Medicare entitlement tied to disability is a common example, where coverage is granted with an effective date in the past.
These scenarios require post-pay recovery.
In a complete model, recovery is not a separate service. Cases not resolved before payment continue through post-pay recovery at no additional cost. The same fee structure covers both prevention and recovery, so value is preserved even when cases fall outside the pre-pay window.
Evaluation should account for how missed cases are handled and whether recovery is built into the model.
From vendor claims to program confidence
Payers that have successfully built complete COB programs rely on vendors with verified processes, demonstrated performance across all three stages, and a model that captures value whether cases are resolved before payment or after.
The shift toward cost avoidance has accelerated as financial leadership places more emphasis on preventing overpayments rather than recovering them after the fact.
For more on that shift, see why payment integrity is moving toward pre-pay.
Evaluation should focus on whether a vendor runs all three stages as a connected model, produces verified decisions at each stage, and demonstrates performance through actual results, not projections. The right partner is the one who connects pre-claim intelligence, pre-pay accuracy, and post-pay recovery into a single program.
Want to quantify how much value you can shift from recovery to prevention? Contact our team to evaluate your pre-pay COB opportunity.
Gary Woodward, Sr. Vice President, Coordination of Benefits, leads Machinify’s Medical COB division and is responsible for overseeing all identification and recovery operations, including post-pay and pre-pay solutions. Gary joined the Company in 2004 and started in our Finance Department supporting the Subrogation, Pharmacy, and COB Audit divisions. Gary earned his B.S. in Business Management and Marketing from Indiana University.
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