9. An accidental disclosure occurs when:

Answer

An accidental disclosure refers to an unintentional release, sharing, or exposure of Protected Health Information (PHI) to unauthorized individuals without malicious intent. Option 4 (PHI is unintentionally shared with someone) correctly defines this concept. In contrast, intentionally selling PHI is a deliberate violation, using PHI for treatment is a permitted and intended use under privacy regulations, and having PHI overheard despite reasonable safeguards typically falls under incidental disclosures rather than negligent or accidental breaches.