What about health inormation causes it to be PHI?

Health information is considered Protected Health Information (PHI) when it contains any identifiable details that can be linked to an individual, such as names, addresses, or social security numbers, combined with health-related data. This classification ensures that personal health details are safeguarded under laws like HIPAA, which aims to protect patient privacy and confidentiality. PHI can include a wide range of information, from medical records to billing information, as long as it pertains to an individual's health and can identify them.