The World’s Most Expensive Prescription

When we think of expensive prescriptions, most of us imagine high-cost drugs or cutting-edge therapies. But the most costly “treatment” in health care is something far less obvious: a missed diagnosis.

A missed or delayed diagnosis can lead to years of unnecessary suffering, repeated visits, wasted testing, and ultimately higher costs for both patients and the health system. The National Academy of Medicine has called diagnostic error a “blind spot” in medicine, estimating that nearly every person in the U.S. will experience a diagnostic error in their lifetime.¹

For women, the impact is especially striking:

• Endometriosis: takes an average of 7–10 years to diagnose.²
• Cardiovascular disease: women’s heart symptoms are more often misattributed to anxiety or stress, leading to delayed treatment.³
• Autoimmune conditions: such as lupus, may take up to 4.6 years from symptom onset to diagnosis.⁴

Every year of delay is costly—not just in dollars, but in productivity, trust, and quality of life.

A Framework for Accuracy

1. History first. Studies show that up to 80–90% of diagnostic accuracy comes from the history alone.⁵
2. Broad differential. Start wide, including both common and serious possibilities. Then filter carefully.
3. Exam, labs, and imaging. These should refine—not replace—your reasoning.
4. Iteration matters. Some conditions require multiple visits to reveal their true course.

Providers and students often face work overload: balancing limited time for patient care, with documentation, learning, and complex presentations. This is where structured tools can help.

That’s why I built Access Diagnosis—an AI-powered framework that helps clinicians:

• Ask the right history questions
• Build a thorough differential diagnosis
• Choose relevant exams, labs, and imaging
• Identify when empiric treatment or follow-up is most appropriate

Because the most expensive prescription is a missed diagnosis—and the most valuable tool is one that helps us get it right the first time.

References

1. National Academies of Sciences, Engineering, and Medicine. Improving Diagnosis in Health Care. Washington, DC: The National Academies Press; 2015. doi:10.17226/21794
2. American College of Obstetricians and Gynecologists. Management of Endometriosis. ACOG Practice Bulletin No. 114. Obstet Gynecol. 2010;116(1):223–236.
3. Mehta LS, Beckie TM, DeVon HA, et al. Acute Myocardial Infarction in Women: A Scientific Statement From the American Heart Association. Circulation. 2016;133(9):916–947. doi:10.1161/CIR.0000000000000351
4. American Autoimmune Related Diseases Association (AARDA). Autoimmune Disease in America Survey. 2019.
5. Hampton JR, Harrison MJ, Mitchell JR, Prichard JS, Seymour C. Relative contributions of history-taking, physical examination, and laboratory investigation to diagnosis and management of medical outpatients. BMJ. 1975;2(5969):486–489. doi:10.1136/bmj.2.5969.486