Underwriting
  • Research and White Papers
  • May 2026

New RGA Study: A Practical Path to Reduce MD Referrals in Automated Underwriting

By
  • Eddy Osman
  • Dr. Nico van Zyl
  • Aaron Mohammed
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In Brief

Reducing unnecessary refer to medical director (RMD) responses represents one of the most impactful ways to improve automated underwriting (AU) performance. A new paper from RGA explains how, by refining impairment criteria, adding targeted reflexives, and grounding decisions in medical guidance, insurers can increase straight-through processing rates and reduce cost while preserving sound risk selection.

Go deeper: Read the full study today.

Key takeaways

  • A meaningful portion of RMD referrals can be automated through better rule logic, reflexive questioning, and data integration – without affecting mortality.
  • Underwriters, medical directors, and technologists must collaborate to translate manual triggers into precise, evidence-based rules.
  • Continuous monitoring ensures sustainable efficiency, allowing MDs to focus on truly complex scenarios.

 

Think of early GPS navigation: Drivers were thrilled to get turn-by-turn directions, but first-generation systems often sent cars into dead-ends or traffic unless the maps were updated, the routes recalibrated, and the logic refined. The tool itself held enormous potential, but without accurate inputs and modernized rules, it could not deliver on the promise of seamless travel.

Automated underwriting (AU) is in a similar place today. It was designed to accelerate decisions, reduce friction, and expand straight-through processing (STP). Yet many AU programs still route a significant volume of cases to “refer to medical director” (RMD) because the underlying rules are outdated or overly cautious. These unnecessary referrals slow cycle times, add cost, and undermine the speed and efficiency AU was built to provide.

But there is a solution: Insurers can safely reduce 15%–40% of MD referrals by converting predictable manual triggers into refined, rules-based decisions supported by reflexive questions and medical guidance.

The result is faster decisions, lower cost, and preserved mortality outcomes.

Why excess RMDs persist – and why they matter

Many RMD triggers are remnants of manual underwriting eras when limited data forced underwriters to default to caution. Today, AU engines have access to prescription histories, lab data, electronic health records, and dynamic reflexive questioning. Still, many rules operate on outdated “better-safe-than-sorry” logic.

This misalignment creates several consequences:

  • Direct cost – MD time spent on cases that could be automated
  • Operational drag – RMD cases breaching service targets and requiring extra evidence or follow-up
  • Lost opportunities – Unnecessary RMDs preventing instant approval in direct-to-consumer (DTC) or agent-assisted channels

Just as early GPS systems became reliable only once routing logic and map data improved, AU becomes powerful only when rules evolve to reflect the available data and clinical realities.

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Dive deeper into this topic and walk through specific underwriting scenarios in detail.

Impairments where refined rules drive real gains

Examples abound in which updated rules and reflexive questions meaningfully reduce RMDs without compromising mortality. The three below show how the right approach can embed nuanced decisioning within automation.

Asthma: Separating the 95% from the true high-risk cases

Legacy manuals often flag asthma for MD review after two or more episodes, treating all recurrences as equal. Yet data shows that 95% of individuals with well-controlled asthma qualify for standard or near-standard rates.

A more precise approach would:

  • Ask reflexive questions about recent hospitalizations, ER visits, steroid burst use, ICU admissions, smoking status, and comorbid COPD
  • Include evidence checks or treatment-adherence indicators, such as consistency with prescribed maintenance therapy
  • Distinguish intermittent, well-controlled presentations from those with severe or unstable disease

This additional nuance allows AU systems to confidently auto-approve low-risk asthma applicants while still routing severe cases to MD review.

Obstructive sleep apnea (OSA): Letting treatment adherence carry weight

OSA is another area where outdated triggers cause unnecessary RMDs. Historically, disclosure of OSA – especially alongside a high BMI – sent cases directly to MDs. Yet treatment adherence dramatically alters mortality risk. In fact, consistent CPAP usage (≥4 hours per night) significantly reduces adverse cardiovascular outcomes.

The refined rule framework includes:

  • Differentiating between diagnoses from home sleep studies vs. formal lab studies, which are possible indicators of more moderate to severe OSA
  • Using reflexives to assess CPAP adherence, daytime symptoms, and recent accidents
  • Checking evidence sources for CPAP supply prescriptions
  • Escalating only severe, central, or poorly managed OSA cases to MD review

This converts what was once a near-automatic RMD into a condition suited for rule-based decisioning.

Diabetes and metabolic indicators: Interpreting lab data through automated thresholds

Lab-driven conditions, especially diabetes and liver enzyme elevations, have traditionally triggered RMDs for expert physician interpretation. Yet abundant population risk data exists tying specific hemoglobin A1c levels and liver enzyme patterns to mortality outcomes.

Modern AU engines can integrate:

  • A1c thresholds tailored by age and treatment type
  • Reflexive questions to clarify severity and detect end-organ complications
  • Third-party evidence sources such as prescription histories for diabetes medications
  • Rule-based distinctions between mild, moderate, and high-risk ranges

This shifts many diabetes cases into automated decision pathways, reserving MD review for extreme or inconsistent lab patterns.

A framework for converting manual triggers into refined AU rules

Translating manual guidance into measurable criteria

Many manual triggers express concern vaguely, with phrases such as “multiple episodes,” “abnormal labs,” or “recent relapse.” Modern AU requires translating these into specific, structured variables such as counts, recency windows, and numeric thresholds. These inputs allow the rules engine to mimic MD reasoning more faithfully.

Using reflexive questions strategically

Dynamic interrogation capabilities, such as those in RGA’s Aura Next underwriting engine, capture the nuance MDs typically request, but only when necessary. This preserves a short and simple application experience for healthy individuals while collecting depth where risk signals arise.

Partnering with medical directors

Refined rules must be vetted collaboratively. MDs provide clinical judgment on rating boundaries, rule thresholds, and cases where automation should remain conservative. RGA’s Global Underwriting Manual supports this process with research-backed guidance.

Pilot, measure, refine

Retrospective testing validates whether new rules replicate MD decisions. Controlled pilots confirm operational gains and ensure no unintended mortality impact. Continuous improvement maintains alignment with evolving medical knowledge.

Conclusion: Balancing efficiency with responsible oversight

Reducing unnecessary RMDs generates immediate value:

  • Higher STP and improved cycle times
  • Lower underwriting expenditures
  • Better customer and distributor experiences
  • More consistent risk assessment
  • More focused use of MD expertise

Guardrails remain essential. Rules must be carefully specified, data must be complete, and audits must catch edge cases. Automation should extend medical judgment, not replace it.


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Meet the Authors & Experts

Eddy Osman
Author
Eddy Osman

Executive Director, Aura Next

Nico Van Zyl Professional Headshot
Author
Dr. Nico van Zyl
Senior Vice President, Chief Medical Director
Aaron Mohammed bio photo
Author
Aaron Mohammed
 Director of Global Digital Underwriting