Which statement best describes how differential diagnosis relates to referral decisions?

• A. Differential diagnosis should be deferred until after billing.
• B. Differential diagnosis is unrelated to referrals.
• C. Differential diagnosis helps determine when to refer patients to other care providers.
• D. Differential diagnosis only applies to medical doctors.

Answer: (C)

Understanding how differential diagnosis informs referral decisions. Differential diagnosis is the process of listing possible causes for a patient’s symptoms and judging which are most likely or most dangerous. This framework guides what steps to take next, including when a referral to another provider is needed for further evaluation, testing, or specialized treatment. If the differential includes conditions outside your scope or serious conditions that require urgent or advanced care, referral is indicated. It also helps you recognize red flags that prompt escalation even when initial treatment could be managed elsewhere. So, using differential diagnosis to decide when to refer is the most appropriate way to ensure safe and appropriate patient care.