A reference to a document of any kind for any purpose. While the term “document” implies a more narrow focus, for this resource this "document" encompasses *any* serialized object with a mime-type, it includes formal patient-centric documents (CDA), clinical notes, scanned paper, non-patient specific documents like policy text, as well as a photo, video, or audio recording acquired or used in healthcare. The DocumentReference resource provides metadata about the document so that the document can be discovered and managed. The actual content may be inline base64 encoded data or provided by direct reference. A reference to a document of any kind for any purpose. While the term “document” implies a more narrow focus, for this resource this "document" encompasses *any* serialized object with a mime-type, it includes formal patient-centric documents (CDA), clinical notes, scanned paper, non-patient specific documents like policy text, as well as a photo, video, or audio recording acquired or used in healthcare. The DocumentReference resource provides metadata about the document so that the document can be discovered and managed. The actual content may be inline base64 encoded data or provided by direct reference. If the element is present, it must have either a @value, an @id, or extensions Business identifiers assigned to this document reference by the performer and/or other systems. These identifiers remain constant as the resource is updated and propagates from server to server. An explicitly assigned identifier of a variation of the content in the DocumentReference. A procedure that is fulfilled in whole or in part by the creation of this media. The current state of the document reference. The status of the underlying document. Imaging modality used. This may include both acquisition and non-acquisition modalities. Specifies the particular kind of document referenced (e.g. History and Physical, Discharge Summary, Progress Note). This usually equates to the purpose of making the document referenced. A categorization for the type of document referenced - helps for indexing and searching. This may be implied by or derived from the code specified in the DocumentReference.type. Who or what the document is about. The document can be about a person, (patient or healthcare practitioner), a device (e.g. a machine) or even a group of subjects (such as a document about a herd of farm animals, or a set of patients that share a common exposure). The Encounter during which this document reference was created or to which the creation of this record is tightly associated. This list of codes represents the main clinical acts, such as a colonoscopy or an appendectomy, being documented. In some cases, the event is inherent in the type Code, such as a "History and Physical Report" in which the procedure being documented is necessarily a "History and Physical" act. Any other resource this document reference was created or to which the creation of this record is tightly associated. The anatomic structures included in the document. The kind of facility where the patient was seen. This property may convey specifics about the practice setting where the content was created, often reflecting the clinical specialty. The time period over which the service that is described by the document was provided. When the document reference was created. Identifies who is responsible for adding the information to the document. A participant who has authenticated the accuracy of the document. Identifies the organization or group who is responsible for ongoing maintenance of and access to the document. Relationships that this document has with other document references that already exist. Human-readable description of the source document. A set of Security-Tag codes specifying the level of privacy/security of the Document found at DocumentReference.content.attachment.url. Note that DocumentReference.meta.security contains the security labels of the data elements in DocumentReference, while DocumentReference.securityLabel contains the security labels for the document the reference refers to. The distinction recognizes that the document may contain sensitive information, while the DocumentReference is metadata about the document and thus might not be as sensitive as the document. For example: a psychotherapy episode may contain highly sensitive information, while the metadata may simply indicate that some episode happened. The document and format referenced. If there are multiple content element repetitions, these must all represent the same document in different format, or attachment metadata. A reference to a document of any kind for any purpose. While the term “document” implies a more narrow focus, for this resource this "document" encompasses *any* serialized object with a mime-type, it includes formal patient-centric documents (CDA), clinical notes, scanned paper, non-patient specific documents like policy text, as well as a photo, video, or audio recording acquired or used in healthcare. The DocumentReference resource provides metadata about the document so that the document can be discovered and managed. The actual content may be inline base64 encoded data or provided by direct reference. The type of attestation the authenticator offers. When the document was attested by the party. Who attested the document in the specified way. A reference to a document of any kind for any purpose. While the term “document” implies a more narrow focus, for this resource this "document" encompasses *any* serialized object with a mime-type, it includes formal patient-centric documents (CDA), clinical notes, scanned paper, non-patient specific documents like policy text, as well as a photo, video, or audio recording acquired or used in healthcare. The DocumentReference resource provides metadata about the document so that the document can be discovered and managed. The actual content may be inline base64 encoded data or provided by direct reference. The type of relationship that this document has with anther document. The target document of this relationship. A reference to a document of any kind for any purpose. While the term “document” implies a more narrow focus, for this resource this "document" encompasses *any* serialized object with a mime-type, it includes formal patient-centric documents (CDA), clinical notes, scanned paper, non-patient specific documents like policy text, as well as a photo, video, or audio recording acquired or used in healthcare. The DocumentReference resource provides metadata about the document so that the document can be discovered and managed. The actual content may be inline base64 encoded data or provided by direct reference. The document or URL of the document along with critical metadata to prove content has integrity. An identifier of the document constraints, encoding, structure, and template that the document conforms to beyond the base format indicated in the mimeType. A reference to a document of any kind for any purpose. While the term “document” implies a more narrow focus, for this resource this "document" encompasses *any* serialized object with a mime-type, it includes formal patient-centric documents (CDA), clinical notes, scanned paper, non-patient specific documents like policy text, as well as a photo, video, or audio recording acquired or used in healthcare. The DocumentReference resource provides metadata about the document so that the document can be discovered and managed. The actual content may be inline base64 encoded data or provided by direct reference. Code|uri|canonical.