Five states offer lessons in measuring care coordination: As states and providers undertake new strategies to integrate care, early lessons are accumulating. A new report from the National Academy for State Health Policy (NASHP) summarizes results from five states that participated in the three-year ABCD III initiative (Assuring Better Child Health and Development), which sought to improve care coordination between primary care providers (PCPs) and providers of community services to Medicaid-eligible children up to three years of age who were identified via screening as having potential developmental delays. The care coordination strategies were piloted and evaluated in Arkansas, Illinois, Minnesota, Oklahoma, and Oregon. ABCD III focused specifically on improving referral and follow-up communication between PCPs and Part C Early Intervention providers. The states explored ways to pay for care coordination (for example, via medical homes), facilitate systematic communication (for example, via standardized forms, data sharing agreements, and privacy policies), and support and sustain coordination across systems (for example, via structured quality improvement projects and electronic data systems that automate measurement). The 26-page report, which is available on the NASHP Web site at nashp.org/sites/default/files/measuring.improving.care_.coordination.pdf, describes the evaluation methods, summarizes results, and highlights lessons learned from the states’ experiences evaluating care coordination.