Impact of Medicare Continuous Subcutaneous Insulin Infusion Policies in Patients With Type 1 Diabetes

The Centers for Medicare and Medicaid Services (CMS) has numerous requirements for coverage of continuous subcutaneous insulin infusion (CSII; insulin pump). Due to recent improvements in diabetes treatment, people with type 1 diabetes are living longer, resulting in an increase in the number of individuals who are eligible for Medicare and are impacted by CMS policies regarding CSII.

Two hundred forty-one adults with type 1 diabetes who had been on CSII with CMS coverage for at least 6 months were surveyed. Median age was 67 years, mean A1c was 7.0%, 64% were women, 93% were white, and the median type 1 diabetes duration was 42 years. Participants reported median CSII use of 15 years and 82% were on CSII before starting CMS.

Of those starting CSII while on CMS, challenges included cost of supplies (29%) or the insulin pump (24%). The majority (57.5%) reported issues with obtaining supplies, the most common problems being delays in release of supplies (29%), difficulty getting paperwork completed (23.5%), and seeing a health care provider every 90 days (18%). Participants reported changing their CSII behaviors because of supply delays (39%) including leaving site in place >3 days (64%), and reusing pump supplies (34%). Consequently, participants reported adverse outcomes including more erratic (48%) or higher (42%) blood glucose and pain or irritation at sites (34%).

This study concluded that current CMS CSII policies promote adverse CSII behaviors and outcomes in type 1 diabetes and thus call for changes in the CMS CSII policies.