Abstract Body (Do not enter title and authors here): Background:
Patients with heart failure (HF) often have difficulty obtaining life-saving medications due to coverage barriers, such as prior authorizations (PA) and high out of pocket (OOP) costs. To promote better insurance coverage of high value therapies, the AHA/ACC/HFSA added Value Statements to HF guidelines to inform policymakers about medication cost effectiveness. We assessed whether these guidelines influenced Medicare drug coverage policies for two life-saving, costly HF medications: angiotensin receptor neprilysin inhibitors (ARNI – guideline “high value”) and sodium glucose cotransporter 2 inhibitors (SGLT2i – guideline “intermediate value”).

Methods:
We performed an observational study of Medicare drug plans from 4/2020-4/2023 to assess for changes in ARNI and SGLT2i coverage after Value Statement publication (4/2022), and subsequent Medicare plan online update (10/2022). The primary outcome was any barrier to drug coverage (PA, tier ≥ 3 OOP cost-sharing, step therapy, or no coverage). Analysis utilized interrupted time series and difference-in-difference (DiD) approaches. DiD analyses used direct oral anticoagulants as a control due to similar cost and utilization as ARNI and SGLT2i, but with no Value Statement.

Results:
Among 7,396 Medicare drug plans, 94.3%-97.4% had coverage barriers to ARNI and 93.2%-96.6% to SGLT2i. The majority of barriers were due to tier ≥ 3 OOP cost-sharing requirements (ARNI: 94.3%-95.8%; SGLT2i: 93.2%-95.6%). Coverage barriers remained stable in 4/2022, and declined slightly in 10/2022 (Figure). In DiD analyses, the presence of a Value Statement was associated with a ~1 percentage point decline in coverage barriers for ARNI and SGLT2i.

Conclusion:
Coverage barriers to ARNI and SGLT2i were common and did not change much in response to Value Statements in HF Guidelines. Increased consideration for Value Statements by Medicare policy-makers is needed to meaningfully improve access to high value therapies.