Health Insurance Basics and Policy Provisions
Cost-sharing and renewability
Health policies use deductibles, coinsurance, copayments, and out-of-pocket maximums. A deductible is paid first; coinsurance is a percentage split after the deductible; an out-of-pocket maximum caps covered in-network spending. Renewability categories matter: cancelable policies can be canceled; optionally renewable policies can be canceled on renewal; conditionally renewable policies can be nonrenewed only for stated conditions; guaranteed renewable policies guarantee renewal but allow class-based premium increases; noncancelable policies guarantee both renewal and premium.
Policy provisions
Common provisions include grace periods, reinstatement, incontestability, waiting or probationary periods, preexisting-condition rules, claims procedures, coordination of benefits, and conversion privileges. Managed care includes HMO, PPO, and POS arrangements; HMOs often use a gatekeeper and emphasize in-network care.
Traps
Guaranteed renewable does not freeze premiums. Coordination of benefits determines primary and secondary payers; for dependent children, the birthday rule often applies. A preexisting condition is not simply any prior illness; it depends on the look-back and coverage rules.
Worked example
An insured has a $1,000 deductible and 80/20 coinsurance on a covered $11,000 bill. Subtract the deductible to get $10,000; the insurer pays 80%, or $8,000, and the insured pays $2,000 coinsurance plus the $1,000 deductible. Rule of thumb: deductible first, then coinsurance, then the out-of-pocket maximum.