Final answer:
A pre-existing condition refers to a medical condition diagnosed, treated, or both before the effective date of coverage.
Step-by-step explanation:
A pre-existing condition refers to a medical condition that was diagnosed, treated, or both within a specified period of time immediately preceding the enrollee's effective date of coverage.
For example, if an individual had a history of asthma and then applies for health insurance, the insurance company may consider asthma as a pre-existing condition and may impose certain restrictions on coverage related to that condition.
Learn more about Pre-existing condition