https://www.hl7.org/fhir/DSTU2/careplan.html https://www.hl7.org/fhir/DSTU2/clinicalimpression.html Care Plan and Clinical Impression API retrieves two resources: CarePlan and ClinicalImpression. Care Plans are used in many of areas of healthcare with a variety of scopes. They can be as simple as a general practitioner keeping track of when their patient is next due for a tetanus immunization, to a detailed plan for an oncology patient that covers diet, chemotherapy, radiation, lab work, and counseling containing detailed timing, relationships, pre-conditions, and goals. Performing a clinical assessment is a fundamental part of a clinician's workflow, performed repeatedly throughout the day. There is wide variance in how clinical impressions are recorded. Some clinical assessments result in an impression recorded as a single text note in the patient 'record' (e.g. "Progress satisfactory, continue with treatment"), while others are associated with careful, detailed record keeping of the evidence gathered, the reasoning leading to a differential diagnosis, and the actions taken during or planned, as a result of the clinical assessment, and there is a continuum between these. Responses to these controllers can be narrowed using date ranges based on the encounter start and end dates. NOTE: The number of records returned can be limited and is defaulted to 500.