1.2 Adverse Selection and the Underwriting Process

Adverse Selection Defined

Adverse selection is the tendency of people most likely to experience a loss to seek or continue insurance in greater proportion than those less likely to experience loss. Left unchecked, adverse selection would cause a pool to fill with high-risk members, premiums would have to rise to cover the heavier claims, lower-risk members would leave, and the pool would unravel — a classic insurance death spiral.

The underwriting process exists primarily to control adverse selection so each rate pool stays homogeneous. By evaluating each applicant before issuance, the underwriter separates risks into classes with similar expected loss, prices each class appropriately, and keeps the pool's actual experience close to the actuarial assumption.

The Underwriter's Job

Underwriting in accident and health insurance is the selection of risks for acceptance, classification, and pricing. The underwriter's three core questions are:

1. Will we accept the risk? (accept, modify, or decline)
2. At what rate class? (preferred, standard, substandard, table-rated, or declined)
3. Under what terms? (policy type, benefit amounts, elimination period, exclusions, riders, rated premium)

The underwriter must balance two pressures. Underwriting too loosely admits excessive risk and causes losses. Underwriting too tightly starves the insurer of premium volume and competitive market share. A sound underwriting manual codifies the balance so decisions are consistent and non-discriminatory.

Sources of Underwriting Information

The underwriter rarely decides on the application alone. The standard information sources are:

How the Sources Fit Together

A typical individual health case flows like this: the applicant completes the application and the agent's report; the insurer runs an MIB check; if MIB returns a code or the application discloses a condition, the underwriter orders an APS and/or a paramedical exam; for high face amounts or financial underwriting concerns, an inspection report may be ordered. The underwriter then classifies the risk.

Risk Classification

After gathering information, the underwriter assigns the applicant to a risk class. Common classes for individual health and disability business include:

• Preferred — better-than-average morbidity/mortality risk; lowest premium.
• Standard — average risk; standard premium.
• Substandard (table-rated) — higher-than-average risk; rated premium, often expressed as a percentage or table letter/number (e.g., Table A through Table J or a flat extra).
• Declined — risk too great to insure on any reasonable terms.

Substandard cases may be written with a flat extra (a fixed dollar amount per unit of coverage added to the premium), a table rating (a percentage loading on the standard premium), an exclusion rider (a specific condition excluded from coverage), or a reduced benefit / modified benefit structure. The goal is to charge a premium commensurate with the extra risk while keeping coverage available.

FCRA Notice and Adverse Underwriting Decisions

Because the MIB report and an inspection report are consumer reports under the Fair Credit Reporting Act (FCRA), an insurer that takes an adverse underwriting action based wholly or partly on information in a consumer report must give the applicant a notice. The notice must:

• State that a consumer report contributed to the adverse decision,
• Identify the consumer reporting agency (for example, MIB or the inspection-report vendor) by name and contact information, and
• Inform the applicant of the right to obtain a copy of the report and to dispute its accuracy.

This is not a denial letter from a doctor — it is a federally required disclosure that a consumer report drove an unfavorable underwriting outcome. An adverse underwriting decision for FCRA purposes is broader than a simple decline; it includes charging a higher premium, reducing benefits, adding an exclusion rider, or applying a table rating because of information in the report.

What Underwriting Cannot Do

Underwriting must be non-discriminatory. The underwriter may classify on the basis of legitimate risk factors — age, health history, occupation, avocation, tobacco use — but may not unfairly discriminate on grounds prohibited by state and federal law. Health status underwriting in the individual major-medical market was largely reshaped by the ACA's guaranteed-issue and community-rating rules, but these principles still govern disability income, LTC, supplemental, and other A&H products outside the ACA's medical-loss-restriction scope.

Exam Signals for Underwriting

• Applicant knew more than the insurer and the pool filled with sick lives → adverse selection.
• Underwriter orders the applicant's doctor's records → Attending Physician Statement (APS).
• Underwriter orders blood and urine screens through a contracted examiner → paramedical exam.
• Insurer charges a higher premium partly because of an MIB code → adverse underwriting decision; FCRA notice required.
• Applicant placed in Table C → substandard / table-rated classification.

Underwriting is the gatekeeper that keeps the law of large numbers honest; the next section drills into the single most-tested underwriting source, the MIB.