An EMR is an electronic health record system that keeps track of patient’s medical history specific to particular provider. It’s a digital version of paper charts maintained by providers. People who are in patient care(doctor, clinician, radiologist, pharmacist etc.) will access EMR to view and update medical records frequently.
An EHR is an electronic health record system that keeps track of patient’s medical history from more than one providers.
A Personal health record (PHR) is a tool used to collect, track and share past and current about your health or the health of someone in your care.
EHR and PHR are similar in nature (conforms to interoperable standards) but with some differences. EHR fully managed by providers whereas PHR is fully managed, shared and controlled by patient and can aggregate data from multiple sources. EHR’s are available to multiple providers without patient consent whereas PHR is available only on patient’s consent.
PHR are of two types based on who owns and controls the data, tethered PHR and interoperable. Tethered PHR is linked with EHR of multiple providers whereas interoperable PHR is independent of health providers and are more specific to the patient.