The List resource already includes guidance on medical history as follows: "The List resource is a flat, possibly ordered, collection of records. List resources are used in many places, including allergies, medications, alerts, family history,* medical history*, etc. List resources can be used to support patient-specific clinical lists as well as lists that manage workflows such as tracking patients, managing teaching cases, etc. Resources supported by the List resource can be homogenous - consisting of only one type of resource (e.g., allergy list); as well as *heterogeneous *- containing a variety of resources (e.g., a problem list including Conditions , AllergyIntolerances , recent Procedures , etc.)." List will have more examples included per http://gforge.hl7.org/gf/project/fhir/tracker/?action=TrackerItemEdit&tracker_item_id=11473 Within the scope of Condition, expand usage section to include example of condition as a result of a procedure: Amputee-BKA could be a condition following a surgical procedure of amputation