Patient Centered Systems PCS are used to assess the patient.

The assessment has query links to interventions so that the patient is treated for all problems instead of the chief complaint.

Diagnosis based systems treat the main problem first. PCS assesses the patient and then determines the plan of care.

A plan of care is your plan to care for a patient. A standard of care is a standard grouping of interventions that a particular unit provides for all patients on that unit.

Patient specific interventions are based on problems.