Huli FHIR Core Implementation Guide (R4) - Local Development build (v0.1.0) built by the FHIR (HL7® FHIR® Standard) Build Tools. See the Directory of published versions
Extension: Huli Modified By
| Official URL: https://fhir.huli.ai/r4/StructureDefinition/huli-modified-by | Version: 0.1.0 | |||
| Active as of 2026-09-11 | Computable Name: HuliModifiedBy | |||
Audit attribution: the internal Huli user who last modified the appointment. Companion
to huli-created-by for audit attribution.
The actor can be ANY staff identity — practitioner, receptionist,
accountant, a service account, or the Huli "Sistema" sentinel — and is not
exposed as a resource on this API. The value is therefore a logical
reference: valueReference.identifier carries the Huli user id under
system = https://huli.io/fhir/identifier/user-id, with no literal
reference and no type (D-013). Earlier releases emitted a typed
Reference(Practitioner) literal; that mislabeled non-practitioner actors
and minted unresolvable references, and was retired.
Mapping: the id of the user who last modified the appointment, projected as
valueReference.identifier (logical reference).
Context of Use
-
Element ID:
Appointment
This extension may be used on the following element(s)
Usage info
Usages:
- Use this Extension: Huli Appointment
You can also check for usages in the FHIR IG Statistics
Formal Views of Extension Content
Description of Profiles, Differentials, Snapshots, and how the XML and JSON presentations work.
This structure is derived from Extension
| Name | Flags | Card. | Type | Description & Constraints Filter:   |
|---|---|---|---|---|
  Extension |
0..* | Extension | Huli Modified By | |
  extension |
0..0 | Extension | ||
| url |
1..1 | uri | "https://fhir.huli.ai/r4/StructureDefinition/huli-modified-by" | |
  value[x] |
1..1 | Reference() | Value of extension | |
 reference |
0..0 | Literal reference, Relative, internal or absolute URL | ||
| type |
0..0 | Type the reference refers to (e.g. "Patient") | ||
| identifier |
1..1 | Identifier | Logical reference, when literal reference is not known | |
| system |
1..1 | uri | The namespace for the identifier value Fixed Value: https://huli.io/fhir/identifier/user-id | |
 value |
1..1 | string | The value that is unique | |
| Documentation for this format | ||||
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| Extension |
0..* | Extension | Huli Modified By | |
 id |
0..1 | string | Unique id for inter-element referencing | |
| extension |
0..0 | Extension Slice: Unordered, Open by value:url | ||
| url |
1..1 | uri | "https://fhir.huli.ai/r4/StructureDefinition/huli-modified-by" | |
| value[x] |
1..1 | Reference() | Value of extension | |
| id |
0..1 | string | Unique id for inter-element referencing | |
| extension |
0..* | Extension | Additional content defined by implementations Slice: Unordered, Open by value:url | |
  identifier |
Σ | 1..1 | Identifier | Logical reference, when literal reference is not known |
 id |
0..1 | string | Unique id for inter-element referencing | |
| extension |
0..* | Extension | Additional content defined by implementations Slice: Unordered, Open by value:url | |
| use |
?!Σ | 0..1 | code | usual | official | temp | secondary | old (If known) Binding: IdentifierUse (required): Identifies the purpose for this identifier, if known . |
| type |
Σ | 0..1 | CodeableConcept | Description of identifier Binding: Identifier Type Codes (extensible): A coded type for an identifier that can be used to determine which identifier to use for a specific purpose. |
| system |
Σ | 1..1 | uri | The namespace for the identifier value Fixed Value: https://huli.io/fhir/identifier/user-id |
| value |
Σ | 1..1 | string | The value that is unique Example General: 123456 |
| period |
Σ | 0..1 | Period | Time period when id is/was valid for use |
| assigner |
Σ | 0..1 | Reference(Organization) | Organization that issued id (may be just text) |
| display |
Σ | 0..1 | string | Text alternative for the resource |
| Documentation for this format | ||||
This structure is derived from Extension
Summary
Simple Extension with the type Reference: Audit attribution: the internal Huli user who last modified the appointment. Companion
to huli-created-by for audit attribution.
The actor can be ANY staff identity — practitioner, receptionist,
accountant, a service account, or the Huli "Sistema" sentinel — and is not
exposed as a resource on this API. The value is therefore a logical
reference: valueReference.identifier carries the Huli user id under
system = https://huli.io/fhir/identifier/user-id, with no literal
reference and no type (D-013). Earlier releases emitted a typed
Reference(Practitioner) literal; that mislabeled non-practitioner actors
and minted unresolvable references, and was retired.
Mapping: the id of the user who last modified the appointment, projected as
valueReference.identifier (logical reference).
Differential View
This structure is derived from Extension
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| Extension |
0..* | Extension | Huli Modified By | |
| extension |
0..0 | Extension | ||
| url |
1..1 | uri | "https://fhir.huli.ai/r4/StructureDefinition/huli-modified-by" | |
| value[x] |
1..1 | Reference() | Value of extension | |
| reference |
0..0 | Literal reference, Relative, internal or absolute URL | ||
| type |
0..0 | Type the reference refers to (e.g. "Patient") | ||
| identifier |
1..1 | Identifier | Logical reference, when literal reference is not known | |
| system |
1..1 | uri | The namespace for the identifier value Fixed Value: https://huli.io/fhir/identifier/user-id | |
| value |
1..1 | string | The value that is unique | |
| Documentation for this format | ||||
Snapshot View
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| Extension |
0..* | Extension | Huli Modified By | |
| id |
0..1 | string | Unique id for inter-element referencing | |
| extension |
0..0 | Extension Slice: Unordered, Open by value:url | ||
| url |
1..1 | uri | "https://fhir.huli.ai/r4/StructureDefinition/huli-modified-by" | |
| value[x] |
1..1 | Reference() | Value of extension | |
| id |
0..1 | string | Unique id for inter-element referencing | |
| extension |
0..* | Extension | Additional content defined by implementations Slice: Unordered, Open by value:url | |
| identifier |
Σ | 1..1 | Identifier | Logical reference, when literal reference is not known |
| id |
0..1 | string | Unique id for inter-element referencing | |
| extension |
0..* | Extension | Additional content defined by implementations Slice: Unordered, Open by value:url | |
| use |
?!Σ | 0..1 | code | usual | official | temp | secondary | old (If known) Binding: IdentifierUse (required): Identifies the purpose for this identifier, if known . |
| type |
Σ | 0..1 | CodeableConcept | Description of identifier Binding: Identifier Type Codes (extensible): A coded type for an identifier that can be used to determine which identifier to use for a specific purpose. |
| system |
Σ | 1..1 | uri | The namespace for the identifier value Fixed Value: https://huli.io/fhir/identifier/user-id |
| value |
Σ | 1..1 | string | The value that is unique Example General: 123456 |
| period |
Σ | 0..1 | Period | Time period when id is/was valid for use |
| assigner |
Σ | 0..1 | Reference(Organization) | Organization that issued id (may be just text) |
| display |
Σ | 0..1 | string | Text alternative for the resource |
| Documentation for this format | ||||
This structure is derived from Extension
Summary
Simple Extension with the type Reference: Audit attribution: the internal Huli user who last modified the appointment. Companion
to huli-created-by for audit attribution.
The actor can be ANY staff identity — practitioner, receptionist,
accountant, a service account, or the Huli "Sistema" sentinel — and is not
exposed as a resource on this API. The value is therefore a logical
reference: valueReference.identifier carries the Huli user id under
system = https://huli.io/fhir/identifier/user-id, with no literal
reference and no type (D-013). Earlier releases emitted a typed
Reference(Practitioner) literal; that mislabeled non-practitioner actors
and minted unresolvable references, and was retired.
Mapping: the id of the user who last modified the appointment, projected as
valueReference.identifier (logical reference).
Other representations of profile: CSV, Excel, Schematron
Terminology Bindings
| Path | Status | Usage | ValueSet | Version | Source |
| Extension.value[x].identifier.use | Base | required | IdentifierUse | 📍4.0.1 | FHIR Std. |
| Extension.value[x].identifier.type | Base | extensible | IdentifierType | 📍4.0.1 | FHIR Std. |
Constraints
| Id | Grade | Path(s) | Description | Expression |
| ele-1 | error | **ALL** elements | All FHIR elements must have a @value or children |
hasValue() or (children().count() > id.count())
|
| ext-1 | error | **ALL** extensions | Must have either extensions or value[x], not both |
extension.exists() != value.exists()
|