PACIO Re-Assessment Timepoints Implementation Guide
1.0.0 - STU 1

PACIO Re-Assessment Timepoints Implementation Guide, published by HL7 Community-Based Care and Privacy Working Group. This is not an authorized publication; it is the continuous build for version 1.0.0). This version is based on the current content of https://github.com/HL7/fhir-pacio-rt/ and changes regularly. See the Directory of published versions

## Extension: BasedOnClinicalImpression - Detailed Descriptions

Active as of 2022-10-03

Definitions for the clinicalImpression extension.

1. Extension
Definition | This extension allows Re-Assessment Timepoint Encounters to be linked to the formal assessments that define the start and end of the timepoint. Each linked ClinicalImpression instance represents a completed assessment, such as an MDS 5-day or OASIS 120-day Follow-up. The instance will include links to the Observation instances that document the discrete results of the assessment.
Control | 0..* This element is affected by the following invariants: ele-1
Invariants | Defined on this element ele-1: All FHIR elements must have a @value or children (: hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (: extension.exists() != value.exists())
2. Extension.id
Definition | Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Control | 0..1
Type | string
3. Extension.extension
Definition | An Extension
Control | 0..0
Type | Extension
Invariants | Defined on this element ele-1: All FHIR elements must have a @value or children (: hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (: extension.exists() != value.exists())
Slicing | This element introduces a set of slices on Extension.extension. The slices are unordered and Open, and can be differentiated using the following discriminators: value @ url
4. Extension.url
Definition | Source of the definition for the extension code - a logical name or a URL.
Control | 1..1
Type | uri
Comments | The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Fixed Value | http://hl7.org/fhir/us/pacio-rt/StructureDefinition/clinicalImpression
5. Extension.value[x]
Definition | Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Control | 0..1
Type | Reference(ClinicalImpression)
[x] Note | See Choice of Data Types for further information about how to use [x]
Invariants | Defined on this element ele-1: All FHIR elements must have a @value or children (: hasValue() or (children().count() > id.count()))