The document analyzes cost sharing structures for inpatient facility costs among Marketplace plans in 37 states in 2015. It finds that bronze plans most commonly involved coinsurance or copayments plus coinsurance for inpatient costs, while silver, gold, and platinum plans increasingly involved only copayments or no costs after deductibles. Average copayments per day or stay were highest for bronze plans at $780 and decreased as plan levels increased to platinum. Coinsurance rates also decreased from an average of 32% for bronze to 20% for gold and platinum plans.