9.1 Health Insurance Concepts and Defining the Insured
Key Takeaways
- Health insurance pools premiums to transfer the financial risk of medical expense and income loss to the insurer.
- Morbidity (sickness/injury rates), not mortality, is the core actuarial assumption that prices health and disability coverage.
- Deductible, coinsurance, copay, and out-of-pocket maximum are the four cost-sharing levers tested on every exam.
- An eligible dependent typically includes a spouse and children up to age 26 under the ACA, regardless of student or marital status.
- Insurable interest in health insurance must exist at the time of application but need not continue to claim time.
Why Health Insurance Exists
Health insurance is the mechanism by which the financial consequences of sickness and injury are transferred from an individual to an insurer through the pooling of premiums. Many insureds pay relatively small premiums; the pool funds the large, unpredictable claims of the few who become ill or injured. This is the law of large numbers applied to morbidity rather than mortality.
Where life insurance prices the probability of death, health insurance prices two related perils: the cost of medical care and the loss of income while disabled. Morbidity tables estimate both the frequency (how often a loss occurs) and the severity (how costly and how long it lasts) of sickness and injury.
Morbidity vs. Mortality
Morbidity is the incidence of sickness and accidents within a defined group. It rises with age and varies by occupation, gender, and lifestyle. Because a person can become sick repeatedly while dying only once, morbidity claims are far more frequent than mortality claims, which is why health premiums are level-rated and adjusted more often than life premiums.
The Four Cost-Sharing Levers
Exam questions hinge on distinguishing four out-of-pocket terms. Memorize the order in which they apply during a claim.
| Term | Definition | Applies |
|---|---|---|
| Deductible | Fixed amount the insured pays before the plan pays anything | First, per year |
| Copayment | Flat dollar amount per service (e.g., $30 office visit) | At point of service |
| Coinsurance | Percentage split after the deductible (e.g., 80/20) | After deductible |
| Out-of-pocket maximum | Annual ceiling on insured's total cost share | Caps the year |
Key Point: Once the out-of-pocket maximum is reached, the plan pays 100% of covered expenses for the remainder of the calendar year. Premiums never count toward the deductible or the out-of-pocket maximum.
Worked Example
A plan has a $2,000 deductible, 80/20 coinsurance, and a $6,000 out-of-pocket maximum. The insured incurs $30,000 of covered charges. The insured pays the first $2,000 (deductible). On the remaining $28,000, the 20% coinsurance share would be $5,600, but combined with the $2,000 deductible that totals $7,600 — over the cap. The insured therefore pays only $6,000; the insurer pays $24,000.
Defining the Insured and Dependents
The insured is the person whose health is covered. A health policy may also cover eligible dependents: a spouse and children. Under the Affordable Care Act, dependent children may remain on a parent's plan until age 26, regardless of marital, student, residency, or tax-dependent status. Some states extend this further.
Insurable Interest in Health Insurance
An applicant must have an insurable interest in the person insured. For health coverage this interest must exist at the time of application but, unlike property insurance, does not need to exist at the time of loss. Individuals are presumed to have unlimited insurable interest in their own health and that of their immediate family. Employers have an insurable interest in employees for group coverage.
Defining the Insured: Dependents, Newborns, and Coordination
Health policies must spell out exactly who is covered. The insured is the primary applicant; dependents typically include a spouse and children up to the federal age-26 limit under the ACA. Federal law requires automatic newborn coverage from the moment of birth, with notice and any added premium usually due within 31 days; coverage for an adopted child attaches from placement on the same 31-day notice rule.
Cost-Sharing Vocabulary You Must Know Cold
- Premium - the recurring charge to keep coverage in force.
- Deductible - the amount the insured pays before the plan pays.
- Coinsurance - the percentage split after the deductible (e.g., 80/20).
- Copayment - a flat dollar charge per service.
- Out-of-pocket maximum - the annual ceiling after which the plan pays 100%.
Worked Numeric
With a $1,500 deductible, 80/20 coinsurance, and a $5,000 out-of-pocket max, a $20,000 hospital bill is paid as follows: the insured pays the first $1,500, then 20% of the remaining $18,500 = $3,700, for $5,200 - but the out-of-pocket max caps the insured's total at $5,000, and the plan pays the rest.
Perils, Probationary Periods, and Coverage Triggers
Health policies respond to two broad perils: accident (sudden, unforeseen bodily injury) and sickness (illness or disease). Some policies impose a probationary period - a stretch after issue during which sickness (but usually not accident) is not covered - to deter buying coverage in anticipation of a known condition. A pre-existing-condition provision may temporarily exclude a condition the applicant had before coverage, though the ACA bars pre-existing exclusions on compliant major-medical plans.
Eligibility and Total Disability Concepts
Group health uses eligibility periods and an enrollment period during which an employee may join without evidence of insurability; late enrollees may face underwriting. The exam also tests the definition of a total disability in disability-related health benefits and the difference between occupational (work-related, often covered by workers' comp) and non-occupational coverage. Most group health and disability plans are non-occupational, expecting workers' compensation to handle job-related injuries - a distinction worth memorizing because it determines which policy pays a given claim.
A health plan has a $2,000 deductible, 80/20 coinsurance, and a $6,000 out-of-pocket maximum. The insured incurs $30,000 of covered charges in one year. How much does the insured pay?
Which actuarial concept is the primary basis for pricing health and disability insurance?