Cost-Related Medication Nonadherence After the Inflation Reduction Act

The Inflation Reduction Act’s 2024 prescription changes to Medicare Part D were associated with a 4.9% reduction in cost-related medication nonadherence among Medicare beneficiaries relative to privately insured beneficiaries, with an even larger decline (7.8%) among those with multiple chronic conditions. However, no corresponding improvement was observed in broader measures of health care-related financial strain, suggesting that additional policy interventions may be needed to address patient challenges with health care costs.