HL7 Electronic Health Record System Functional Model, Release 2.1.1
2.1.1 - Normative

HL7 Electronic Health Record System Functional Model, Release 2.1.1, published by HL7 International / Electronic Health Records. This guide is not an authorized publication; it is the continuous build for version 2.1.1 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/ehrsfm-ig/ and changes regularly. See the Directory of published versions

## Extension: requirements-change-info

Official URL: http://hl7.org/ehrs/uv/ehrsfmr2/StructureDefinition/requirements-change-info | Version: 2.1.1
Standards status: Normative Active as of 2025-12-13 | Maturity Level: 1 | Computable Name: RequirementsChangeInfo

Requirements or Statement Criteria Change Indicator

Context of Use

This extension may be used on the following element(s)

- Element ID: `Requirements`
- Element ID: `Requirements.statement`

Usage info

Usages:

- This Extension is not used by any profiles in this Implementation Guide

You can also check for usages in the FHIR IG Statistics

### Formal Views of Extension Content

Description Differentials, Snapshots, and other representations.

- Differential Table
- Snapshot Table
- Statistics/References
- All

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | Extension
url |  | 1..1 | uri | "http://hl7.org/ehrs/uv/ehrsfmr2/StructureDefinition/requirements-change-info"
value[x] |  | 0..1 | code | Value of extension Binding: Requirement Change Indicators (required)
Documentation for this format

#### Terminology Bindings (Differential)

Path | Status | Usage | ValueSet | Version | Source
Extension.value[x] | Base | required | Requirement Change Indicators | 📦2.1.1 | This IG

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | Extension
id |  | 0..1 | id | Unique id for inter-element referencing
extension |  | 0..* | Extension | Additional content defined by implementations Slice: Unordered, Open by value:url
url |  | 1..1 | uri | "http://hl7.org/ehrs/uv/ehrsfmr2/StructureDefinition/requirements-change-info"
value[x] |  | 0..1 | code | Value of extension Binding: Requirement Change Indicators (required)
Documentation for this format

#### Terminology Bindings

Path | Status | Usage | ValueSet | Version | Source
Extension.value[x] | Base | required | Requirement Change Indicators | 📦2.1.1 | This IG

#### 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()`

Summary

Simple Extension with the type code: Requirements or Statement Criteria Change Indicator

Maturity: 1

Differential ViewDifferential View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | Extension
url |  | 1..1 | uri | "http://hl7.org/ehrs/uv/ehrsfmr2/StructureDefinition/requirements-change-info"
value[x] |  | 0..1 | code | Value of extension Binding: Requirement Change Indicators (required)
Documentation for this format

#### Terminology Bindings (Differential)

Path | Status | Usage | ValueSet | Version | Source
Extension.value[x] | Base | required | Requirement Change Indicators | 📦2.1.1 | This IG

Snapshot View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | Extension
id |  | 0..1 | id | Unique id for inter-element referencing
extension |  | 0..* | Extension | Additional content defined by implementations Slice: Unordered, Open by value:url
url |  | 1..1 | uri | "http://hl7.org/ehrs/uv/ehrsfmr2/StructureDefinition/requirements-change-info"
value[x] |  | 0..1 | code | Value of extension Binding: Requirement Change Indicators (required)
Documentation for this format

#### Terminology Bindings

Path | Status | Usage | ValueSet | Version | Source
Extension.value[x] | Base | required | Requirement Change Indicators | 📦2.1.1 | This IG

#### 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()`

Summary

Simple Extension with the type code: Requirements or Statement Criteria Change Indicator

Maturity: 1

Other representations of profile: CSV, Excel, Schematron