For group health plan eligibility, a gap in coverage must not exceed how many days to avoid affecting pre-existing condition determinations?

• A. 30 days
• B. 63 days
• C. 90 days
• D. 120 days

Answer: (B)

Gaps in creditable coverage determine whether a preexisting condition rule can apply. If you have a break in coverage, the plan looks at how long that gap lasts to decide if prior medical history can be used to exclude or limit coverage for preexisting conditions. The key threshold is 63 days: a gap of 63 days or less is treated as continuous coverage for the purpose of preexisting condition determinations, so no exclusion based on that gap is triggered. If the gap exceeds 63 days, the new plan may apply preexisting condition provisions based on the period before coverage resumed. Gap length can be counted across multiple plans, as long as no single continuous break exceeds 63 days.