Diagnostic error is the leading cause of medical malpractice claims in the US, and is estimated to cause 40,000-80,000 deaths annually. One in every ten diagnoses is wrong and one in every thousand ambulatory diagnostic encounters result in harm. The Society to Improve Diagnosis in Medicine (SIDM) is committed to: Encouraging research Promoting education, and Building awareness …among all the stakeholder groups that can have impact. As patients, clinicians, researchers, educators, insurers, and healthcare professionals, we seek to understand the nature, causes, and remedies for diagnostic errors. Our ultimate goal is to reduce misdiagnosis-related harm and ensure that diagnosis is timely, accurate, reliable, efficient, and safe.