Procedure Profile

Canonical	../StructureDefinition/nexus-emr-core-procedure
Status	draft · 1.26.0
Base	Procedure (constraint)
Source	FSH · JSON

Defines the Nexus EMR FHIR profile for Procedure resources, based on CA-Core Procedure constraints, for aggregating data from multiple EMRs.

Salient fields

The profile's synthesized-accessor contract: fields TypedFhir surfaces as first-class typed properties, each computed from the instance by a restricted FHIRPath expression. See Salient Fields for what they are, how they shape LLM contexts, and how to declare them.

Key	Type	Expression	Rendered as	Description
code	coded	code		Procedure performed with raw code support i
status	code	status		preparation | in-progress | completed | entered-in-error i
performed	dateTime	performedDateTime \| performedPeriod.start		When the procedure was performed i
reason_code	coded	reasonCode		Coded reason procedure performed i
body_site	coded	bodySite		Target body sites i
outcome	coded	outcome		The result of procedure i

code

Short	Procedure performed with raw code support
Definition	The specific procedure that was performed. REQUIRED: text element for human readability RECOMMENDED: Standard terminology codes (CPT, SNOMED CT, LOINC, etc.) OPTIONAL: Raw EMR procedure codes for source system preservation Nexus EMR does not mandate a specific coding system for procedures. The text element ensures human readability even when coded values are not recognized.
Comments	Where this code was mapped from a source system's own vocabulary, carry the raw coding alongside the mapped one, flagged userSelected = true. See Carrying the raw code.
Expression	code
Type	coded
Prose inherited from	Procedure.code

status

Short	preparation | in-progress | completed | entered-in-error
Definition	A code specifying the state of the procedure. Generally this will be completed or entered-in-error.
Comments	This is a modifier element. The status affects the interpretation of the procedure.
Expression	status
Type	code
Prose inherited from	Procedure.status

performed

Short	When the procedure was performed
Definition	The date, period, or age when the procedure was performed. For procedures that span time, use Period.
Comments	Use the appropriate data type: dateTime for single point in time, Period for procedures spanning time.
Expression	performedDateTime | performedPeriod.start
Type	dateTime
Prose inherited from	Procedure.performed[x]

reason_code

Short	Coded reason procedure performed
Definition	The coded reason why the procedure was performed. This may be a coded entity of some type, or may simply be present as text.
Comments	Use Procedure.reasonCode when a code sufficiently describes the reason. Use Procedure.reasonReference when referencing a resource, which allows more information to be conveyed, such as onset date. Procedure.reasonCode and Procedure.reasonReference are not meant to be duplicative. For a single reason, either Procedure.reasonCode or Procedure.reasonReference can be used. Procedure.reasonCode may be a summary code, or Procedure.reasonReference may be used to reference a very precise definition of the reason using Condition | Observation | Procedure | DiagnosticReport | DocumentReference. Both Procedure.reasonCode and Procedure.reasonReference can be used if they are describing different reasons for the procedure.
Expression	reasonCode
Type	coded
Prose inherited from	Procedure.reasonCode

body_site

Short	Target body sites
Definition	Detailed and structured anatomical location information.
Comments	Multiple body sites can be specified for procedures affecting multiple areas.
Expression	bodySite
Type	coded
Prose inherited from	Procedure.bodySite

outcome

Short	The result of procedure
Definition	The outcome of the procedure - successful, partially successful, unsuccessful, etc.
Comments	If outcome contains narrative text only, it can be captured using the CodeableConcept.text.
Expression	outcome
Type	coded
Prose inherited from	Procedure.outcome