A misdiagnosis case generally involves a healthcare provider failing to diagnose a condition correctly or failing to recognize that a condition required further testing, referral, or follow-up. Sometimes the problem is a wrong label placed on symptoms. Other times the diagnosis is “almost right” but still misses key red flags, or the provider rules out serious conditions too early. In Arizona, diagnostic errors may arise in many settings, including primary care visits, emergency departments, urgent care, imaging centers, and specialty clinics.
It’s also important to understand that a bad outcome alone does not automatically mean the provider is legally at fault. Medicine is complex, and some conditions can be difficult to identify early. The legal question is whether the provider’s medical judgment and actions fell below what would be considered reasonable in similar circumstances. When that standard is not met, and the diagnostic failure causes harm, a claim may be possible.
Misdiagnosis claims often look like a timeline problem: symptoms begin, a patient is evaluated, tests occur, and the medical team documents a clinical conclusion. If the record shows that critical findings were overlooked, abnormal results were not acted on, or follow-up was delayed without adequate justification, the diagnostic pathway becomes central to the case.


