RWD35 Coding Trends of Single Gene and Next Generation Sequencing Tests for Patients with Advanced Non-Small Cell Lung Cancer Using a EHR-Linked Claims Database

Coding, billing and reimbursement complexities limit use of claims data in assessing real-world biomarker testing, both single gene test (SGT) and next-generation sequencing (NGS). Using an electronic health record (EHR) database linked to claims, and EHR as the gold standard, we assessed the impact of different reimbursement coding algorithms on identifying biomarker tests in claims over time.