Table of Contents Goodwill impairment - Interventional segment /s/ ERNST & YOUNG LLP We have served as the Company's auditor since 1959. New York, New York November 27, 2019 49 At September 30, 2019, the Company’s goodwill assigned to the Interventional segment was $12.6 billion. As discussed in Note 1 of the consolidated financial statements, goodwill is tested for impairment at least annually at the reporting unit level using quantitative models. Auditing management’s annual goodwill impairment test was complex and highly judgmental due to the significant estimation required in determining the fair value of the reporting units. In particular, the fair value estimates were sensitive to significant assumptions such as the discount rate, revenue growth rate, operating margin, and terminal value, which are affected by expectations about future market or economic conditions. We obtained an understanding, evaluated the design and tested the operating effectiveness of controls over the Company’s goodwill impairment review process. For example, we tested controls over management’s review of the inputs and assumptions to the goodwill impairment analysis. To test the estimated fair value of the Company’s reporting units, our audit procedures included, among others, assessing fair value methodology, evaluating the prospective financial information used by the Company in its valuation analysis and involving our valuation specialists to assist in testing the significant assumptions discussed above. We compared the significant assumptions used by management to current industry and economic trends, historical financial results, and other relevant factors that would affect the significant assumptions. We assessed the historical accuracy of management’s estimates and performed sensitivity analyses of significant assumptions to evaluate the changes in the fair value of the reporting units. In addition, we tested the reconciliation of the fair value of the reporting units to the market capitalization of the Company. Description of the Matter How We Addressed the Matter in Our Audit