FHIR IG analytics| Package | hl7.fhir.uv.xver-r4b.r3 |
| Resource Type | StructureDefinition |
| Id | StructureDefinition-ext-R4B-MedicationKnowledge.medicineClassification.json |
| FHIR Version | R3 |
| Source | http://hl7.org/fhir/uv/xver-r4b.r3/0.1.0/StructureDefinition-ext-R4B-MedicationKnowledge.medicineClassification.html |
| URL | http://hl7.org/fhir/4.3/StructureDefinition/extension-MedicationKnowledge.medicineClassification |
| Version | 0.1.0 |
| Status | active |
| Date | 2026-03-17T21:02:03.8104715+00:00 |
| Name | ExtensionMedicationKnowledge_MedicineClassification |
| Title | R4B: Categorization of the medication within a formulary or classification system (new) |
| Realm | uv |
| Authority | hl7 |
| Description | R4B: `MedicationKnowledge.medicineClassification` (new:BackboneElement) |
| Purpose | This extension is part of the cross-version definitions generated to enable use of the element `MedicationKnowledge.medicineClassification` as defined in FHIR R4B in FHIR STU3. The source element is defined as: `MedicationKnowledge.medicineClassification` 0..* `BackboneElement` Across FHIR versions, the element set has been mapped as: * R4B: `MedicationKnowledge.medicineClassification` 0..* `BackboneElement` Following are the generation technical comments: Element `MedicationKnowledge.medicineClassification` is not mapped to FHIR STU3, since FHIR R4B `MedicationKnowledge` is not mapped. Element `MedicationKnowledge.medicineClassification` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element). |
| Type | Extension |
| Kind | complex-type |
| ConceptMap | ||
| hl7.fhir.uv.xver-r4b.r3#0.1.0 | R4B-MedicationKnowledge-element-map-to-R3 | Cross-version mapping for FHIR R4B MedicationKnowledge to FHIR STU3 Basic |
No resources found
No extension usage examples found
Note: links and images are rebased to the (stated) source
Generated Narrative: StructureDefinition ext-R4B-MedicationKnowledge.medicineClassification
| Name | Flags | Card. | Type | Description & Constraints |
|---|---|---|---|---|
  Extension | 0..* | Extension | R4B: Categorization of the medication within a formulary or classification system (new) | |
  Slices for extension | 1..* | Extension | Extension Slice: Unordered, Open by value:url | |
   extension:type | 1..1 | Extension | R4B: The type of category for the medication (for example, therapeutic classification, therapeutic sub-classification) (new) | |
  url | 1..1 | uri | "type" | |
  value[x] | 1..1 | CodeableConcept | The type of category for the medication (for example, therapeutic classification, therapeutic sub-classification) | |
 extension:classification | 0..* | Extension | R4B: Specific category assigned to the medication (new) | |
 url | 1..1 | uri | "classification" | |
| value[x] | 0..1 | CodeableConcept | Specific category assigned to the medication | |
| url | 1..1 | uri | "http://hl7.org/fhir/4.3/StructureDefinition/extension-MedicationKnowledge.medicineClassification" | |
 value[x] | 0..0 | Value of extension | ||
| Documentation for this format | ||||
FHIR
FHIRsmith{
"resourceType": "StructureDefinition",
"id": "ext-R4B-MedicationKnowledge.medicineClassification",
"text": {
"status": "extensions",
"div": "<!-- snip (see above) -->"
},
"extension": [
{
"url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
"valueCode": "fhir"
},
{
"extension": [
{
"url": "packageId",
"valueId": "hl7.fhir.uv.xver-r4b.r3"
},
{
"url": "version",
"valueString": "0.1.0"
},
{
"url": "uri",
"valueUri": "http://hl7.org/fhir/uv/xver/ImplementationGuide/hl7.fhir.uv.xver-r4b.r3"
}
],
"url": "http://hl7.org/fhir/StructureDefinition/package-source"
},
{
"url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
"valueInteger": 0,
"_valueInteger": {
"extension": [
{
"url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-conformance-derivedFrom",
"valueUri": "http://hl7.org/fhir/uv/xver/ImplementationGuide/hl7.fhir.uv.xver-r4b.r3"
}
]
}
},
{
"url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
"valueCode": "trial-use",
"_valueCode": {
"extension": [
{
"url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-conformance-derivedFrom",
"valueUri": "http://hl7.org/fhir/uv/xver/ImplementationGuide/hl7.fhir.uv.xver-r4b.r3"
}
]
}
}
],
"url": "http://hl7.org/fhir/4.3/StructureDefinition/extension-MedicationKnowledge.medicineClassification",
"version": "0.1.0",
"name": "ExtensionMedicationKnowledge_MedicineClassification",
"title": "R4B: Categorization of the medication within a formulary or classification system (new)",
"status": "active",
"experimental": false,
"date": "2026-03-17T21:02:03.8104715+00:00",
"publisher": "FHIR Infrastructure",
"contact": [
{
"name": "FHIR Infrastructure",
"telecom": [
{
"system": "url",
"value": "http://www.hl7.org/Special/committees/fiwg"
}
]
}
],
"description": "R4B: `MedicationKnowledge.medicineClassification` (new:BackboneElement)",
"jurisdiction": [
{
"coding": [
{
"system": "http://unstats.un.org/unsd/methods/m49/m49.htm",
"code": "001",
"display": "World"
}
]
}
],
"purpose": "This extension is part of the cross-version definitions generated to enable use of the\r\nelement `MedicationKnowledge.medicineClassification` as defined in FHIR R4B\r\nin FHIR STU3.\r\n\r\nThe source element is defined as:\r\n`MedicationKnowledge.medicineClassification` 0..* `BackboneElement`\r\n\r\nAcross FHIR versions, the element set has been mapped as:\r\n* R4B: `MedicationKnowledge.medicineClassification` 0..* `BackboneElement`\r\n\r\nFollowing are the generation technical comments:\r\nElement `MedicationKnowledge.medicineClassification` is not mapped to FHIR STU3, since FHIR R4B `MedicationKnowledge` is not mapped.\nElement `MedicationKnowledge.medicineClassification` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
"fhirVersion": "3.0.2",
"mapping": [
{
"identity": "rim",
"uri": "http://hl7.org/v3",
"name": "RIM Mapping"
}
],
"kind": "complex-type",
"abstract": false,
"contextType": "resource",
"context": [
"Basic"
],
"type": "Extension",
"baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension",
"derivation": "constraint",
"snapshot": {
"element": [
{
"id": "Extension",
"path": "Extension",
"short": "R4B: Categorization of the medication within a formulary or classification system (new)",
"definition": "R4B: `MedicationKnowledge.medicineClassification` (new:BackboneElement)",
"comment": "Element `MedicationKnowledge.medicineClassification` is not mapped to FHIR STU3, since FHIR R4B `MedicationKnowledge` is not mapped.\nElement `MedicationKnowledge.medicineClassification` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
"min": 0,
"max": "*",
"base": {
"path": "Extension",
"min": 0,
"max": "*"
},
"condition": [
"ele-1"
],
"constraint": [
{
"key": "ele-1",
"severity": "error",
"human": "All FHIR elements must have a @value or children",
"expression": "hasValue() | (children().count() > id.count())",
"xpath": "@value|f:*|h:div",
"source": "http://hl7.org/fhir/StructureDefinition/Element"
},
{
"key": "ext-1",
"severity": "error",
"human": "Must have either extensions or value[x], not both",
"expression": "extension.exists() != value.exists()",
"xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])",
"source": "http://hl7.org/fhir/StructureDefinition/Extension"
}
],
"isModifier": false
},
{
"id": "Extension.id",
"path": "Extension.id",
"representation": [
"xmlAttr"
],
"short": "xml:id (or equivalent in JSON)",
"definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
"min": 0,
"max": "1",
"base": {
"path": "Element.id",
"min": 0,
"max": "1"
},
"type": [
{
"code": "string"
}
],
"mapping": [
{
"identity": "rim",
"map": "n/a"
}
]
},
{
"id": "Extension.extension",
"path": "Extension.extension",
"slicing": {
"discriminator": [
{
"type": "value",
"path": "url"
}
],
"description": "Extensions are always sliced by (at least) url",
"ordered": false,
"rules": "open"
},
"short": "Extension",
"definition": "An Extension",
"min": 1,
"max": "*",
"base": {
"path": "Element.extension",
"min": 0,
"max": "*"
},
"type": [
{
"code": "Extension"
}
]
},
{
"id": "Extension.extension:type",
"path": "Extension.extension",
"sliceName": "type",
"short": "R4B: The type of category for the medication (for example, therapeutic classification, therapeutic sub-classification) (new)",
"definition": "R4B: `MedicationKnowledge.medicineClassification.type` (new:CodeableConcept)",
"comment": "Element `MedicationKnowledge.medicineClassification.type` is part of an existing definition because parent element `MedicationKnowledge.medicineClassification` requires a cross-version extension.\nElement `MedicationKnowledge.medicineClassification.type` is not mapped to FHIR STU3, since FHIR R4B `MedicationKnowledge` is not mapped.\nElement `MedicationKnowledge.medicineClassification.type` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
"requirements": "Element `MedicationKnowledge.medicineClassification.type` is part of an existing definition because parent element `MedicationKnowledge.medicineClassification` requires a cross-version extension.\nElement `MedicationKnowledge.medicineClassification.type` is not mapped to FHIR STU3, since FHIR R4B `MedicationKnowledge` is not mapped.\nElement `MedicationKnowledge.medicineClassification.type` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
"min": 1,
"max": "1",
"base": {
"path": "Element.extension",
"min": 0,
"max": "*"
},
"type": [
{
"code": "Extension"
}
]
},
{
"id": "Extension.extension:type.id",
"path": "Extension.extension.id",
"representation": [
"xmlAttr"
],
"short": "xml:id (or equivalent in JSON)",
"definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
"min": 0,
"max": "1",
"base": {
"path": "Element.id",
"min": 0,
"max": "1"
},
"type": [
{
"code": "string"
}
],
"mapping": [
{
"identity": "rim",
"map": "n/a"
}
]
},
{
"id": "Extension.extension:type.extension",
"path": "Extension.extension.extension",
"slicing": {
"discriminator": [
{
"type": "value",
"path": "url"
}
],
"description": "Extensions are always sliced by (at least) url",
"rules": "open"
},
"short": "Additional Content defined by implementations",
"definition": "May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
"comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
"alias": [
"extensions",
"user content"
],
"min": 0,
"max": "*",
"base": {
"path": "Element.extension",
"min": 0,
"max": "*"
},
"type": [
{
"code": "Extension"
}
],
"mapping": [
{
"identity": "rim",
"map": "n/a"
}
]
},
{
"id": "Extension.extension:type.url",
"path": "Extension.extension.url",
"representation": [
"xmlAttr"
],
"short": "identifies the meaning of the extension",
"definition": "Source of the definition for the extension code - a logical name or a URL.",
"comment": "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.",
"min": 1,
"max": "1",
"base": {
"path": "Extension.url",
"min": 1,
"max": "1"
},
"type": [
{
"code": "uri"
}
],
"fixedUri": "type",
"mapping": [
{
"identity": "rim",
"map": "N/A"
}
]
},
{
"id": "Extension.extension:type.value[x]",
"path": "Extension.extension.value[x]",
"short": "The type of category for the medication (for example, therapeutic classification, therapeutic sub-classification)",
"definition": "The type of category for the medication (for example, therapeutic classification, therapeutic sub-classification).",
"min": 1,
"max": "1",
"base": {
"path": "Extension.value[x]",
"min": 0,
"max": "1"
},
"type": [
{
"code": "CodeableConcept"
}
],
"mapping": [
{
"identity": "rim",
"map": "N/A"
}
]
},
{
"id": "Extension.extension:classification",
"path": "Extension.extension",
"sliceName": "classification",
"short": "R4B: Specific category assigned to the medication (new)",
"definition": "R4B: `MedicationKnowledge.medicineClassification.classification` (new:CodeableConcept)",
"comment": "Element `MedicationKnowledge.medicineClassification.classification` is part of an existing definition because parent element `MedicationKnowledge.medicineClassification` requires a cross-version extension.\nElement `MedicationKnowledge.medicineClassification.classification` is not mapped to FHIR STU3, since FHIR R4B `MedicationKnowledge` is not mapped.\nElement `MedicationKnowledge.medicineClassification.classification` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
"requirements": "Element `MedicationKnowledge.medicineClassification.classification` is part of an existing definition because parent element `MedicationKnowledge.medicineClassification` requires a cross-version extension.\nElement `MedicationKnowledge.medicineClassification.classification` is not mapped to FHIR STU3, since FHIR R4B `MedicationKnowledge` is not mapped.\nElement `MedicationKnowledge.medicineClassification.classification` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
"min": 0,
"max": "*",
"base": {
"path": "Element.extension",
"min": 0,
"max": "*"
},
"type": [
{
"code": "Extension"
}
]
},
{
"id": "Extension.extension:classification.id",
"path": "Extension.extension.id",
"representation": [
"xmlAttr"
],
"short": "xml:id (or equivalent in JSON)",
"definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
"min": 0,
"max": "1",
"base": {
"path": "Element.id",
"min": 0,
"max": "1"
},
"type": [
{
"code": "string"
}
],
"mapping": [
{
"identity": "rim",
"map": "n/a"
}
]
},
{
"id": "Extension.extension:classification.extension",
"path": "Extension.extension.extension",
"slicing": {
"discriminator": [
{
"type": "value",
"path": "url"
}
],
"description": "Extensions are always sliced by (at least) url",
"rules": "open"
},
"short": "Additional Content defined by implementations",
"definition": "May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
"comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
"alias": [
"extensions",
"user content"
],
"min": 0,
"max": "*",
"base": {
"path": "Element.extension",
"min": 0,
"max": "*"
},
"type": [
{
"code": "Extension"
}
],
"mapping": [
{
"identity": "rim",
"map": "n/a"
}
]
},
{
"id": "Extension.extension:classification.url",
"path": "Extension.extension.url",
"representation": [
"xmlAttr"
],
"short": "identifies the meaning of the extension",
"definition": "Source of the definition for the extension code - a logical name or a URL.",
"comment": "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.",
"min": 1,
"max": "1",
"base": {
"path": "Extension.url",
"min": 1,
"max": "1"
},
"type": [
{
"code": "uri"
}
],
"fixedUri": "classification",
"mapping": [
{
"identity": "rim",
"map": "N/A"
}
]
},
{
"id": "Extension.extension:classification.value[x]",
"path": "Extension.extension.value[x]",
"short": "Specific category assigned to the medication",
"definition": "Specific category assigned to the medication (e.g. anti-infective, anti-hypertensive, antibiotic, etc.).",
"min": 0,
"max": "1",
"base": {
"path": "Extension.value[x]",
"min": 0,
"max": "1"
},
"type": [
{
"code": "CodeableConcept"
}
],
"mapping": [
{
"identity": "rim",
"map": "N/A"
}
]
},
{
"id": "Extension.url",
"path": "Extension.url",
"representation": [
"xmlAttr"
],
"short": "identifies the meaning of the extension",
"definition": "Source of the definition for the extension code - a logical name or a URL.",
"comment": "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.",
"min": 1,
"max": "1",
"base": {
"path": "Extension.url",
"min": 1,
"max": "1"
},
"type": [
{
"code": "uri"
}
],
"fixedUri": "http://hl7.org/fhir/4.3/StructureDefinition/extension-MedicationKnowledge.medicineClassification",
"mapping": [
{
"identity": "rim",
"map": "N/A"
}
]
},
{
"id": "Extension.value[x]",
"path": "Extension.value[x]",
"short": "Value of extension",
"definition": "Value of extension - may be a resource or one of a constrained set of the data types (see Extensibility in the spec for list).",
"min": 0,
"max": "0",
"base": {
"path": "Extension.value[x]",
"min": 0,
"max": "1"
},
"type": [
{
"code": "base64Binary"
},
{
"code": "boolean"
},
{
"code": "code"
},
{
"code": "date"
},
{
"code": "dateTime"
},
{
"code": "decimal"
},
{
"code": "id"
},
{
"code": "instant"
},
{
"code": "integer"
},
{
"code": "markdown"
},
{
"code": "oid"
},
{
"code": "positiveInt"
},
{
"code": "string"
},
{
"code": "time"
},
{
"code": "unsignedInt"
},
{
"code": "uri"
},
{
"code": "Address"
},
{
"code": "Age"
},
{
"code": "Annotation"
},
{
"code": "Attachment"
},
{
"code": "CodeableConcept"
},
{
"code": "Coding"
},
{
"code": "ContactPoint"
},
{
"code": "Count"
},
{
"code": "Distance"
},
{
"code": "Duration"
},
{
"code": "HumanName"
},
{
"code": "Identifier"
},
{
"code": "Money"
},
{
"code": "Period"
},
{
"code": "Quantity"
},
{
"code": "Range"
},
{
"code": "Ratio"
},
{
"code": "Reference"
},
{
"code": "SampledData"
},
{
"code": "Signature"
},
{
"code": "Timing"
},
{
"code": "Meta"
}
],
"mapping": [
{
"identity": "rim",
"map": "N/A"
}
]
}
]
},
"differential": {
"element": [
{
"id": "Extension",
"path": "Extension",
"short": "R4B: Categorization of the medication within a formulary or classification system (new)",
"definition": "R4B: `MedicationKnowledge.medicineClassification` (new:BackboneElement)",
"comment": "Element `MedicationKnowledge.medicineClassification` is not mapped to FHIR STU3, since FHIR R4B `MedicationKnowledge` is not mapped.\nElement `MedicationKnowledge.medicineClassification` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
"min": 0,
"max": "*",
"base": {
"path": "Extension",
"min": 0,
"max": "*"
},
"isModifier": false
},
{
"id": "Extension.extension",
"path": "Extension.extension",
"slicing": {
"discriminator": [
{
"type": "value",
"path": "url"
}
],
"ordered": false,
"rules": "open"
},
"min": 1,
"max": "*",
"base": {
"path": "Extension.extension",
"min": 0,
"max": "*"
}
},
{
"id": "Extension.extension:type",
"path": "Extension.extension",
"sliceName": "type",
"short": "R4B: The type of category for the medication (for example, therapeutic classification, therapeutic sub-classification) (new)",
"definition": "R4B: `MedicationKnowledge.medicineClassification.type` (new:CodeableConcept)",
"comment": "Element `MedicationKnowledge.medicineClassification.type` is part of an existing definition because parent element `MedicationKnowledge.medicineClassification` requires a cross-version extension.\nElement `MedicationKnowledge.medicineClassification.type` is not mapped to FHIR STU3, since FHIR R4B `MedicationKnowledge` is not mapped.\nElement `MedicationKnowledge.medicineClassification.type` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
"requirements": "Element `MedicationKnowledge.medicineClassification.type` is part of an existing definition because parent element `MedicationKnowledge.medicineClassification` requires a cross-version extension.\nElement `MedicationKnowledge.medicineClassification.type` is not mapped to FHIR STU3, since FHIR R4B `MedicationKnowledge` is not mapped.\nElement `MedicationKnowledge.medicineClassification.type` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
"min": 1,
"max": "1",
"base": {
"path": "Extension.extension",
"min": 0,
"max": "*"
}
},
{
"id": "Extension.extension:type.url",
"path": "Extension.extension.url",
"min": 1,
"max": "1",
"base": {
"path": "Extension.url",
"min": 1,
"max": "1"
},
"fixedUri": "type"
},
{
"id": "Extension.extension:type.value[x]",
"path": "Extension.extension.value[x]",
"short": "The type of category for the medication (for example, therapeutic classification, therapeutic sub-classification)",
"definition": "The type of category for the medication (for example, therapeutic classification, therapeutic sub-classification).",
"min": 1,
"max": "1",
"base": {
"path": "Extension.value[x]",
"min": 0,
"max": "1"
},
"type": [
{
"code": "CodeableConcept"
}
]
},
{
"id": "Extension.extension:classification",
"path": "Extension.extension",
"sliceName": "classification",
"short": "R4B: Specific category assigned to the medication (new)",
"definition": "R4B: `MedicationKnowledge.medicineClassification.classification` (new:CodeableConcept)",
"comment": "Element `MedicationKnowledge.medicineClassification.classification` is part of an existing definition because parent element `MedicationKnowledge.medicineClassification` requires a cross-version extension.\nElement `MedicationKnowledge.medicineClassification.classification` is not mapped to FHIR STU3, since FHIR R4B `MedicationKnowledge` is not mapped.\nElement `MedicationKnowledge.medicineClassification.classification` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
"requirements": "Element `MedicationKnowledge.medicineClassification.classification` is part of an existing definition because parent element `MedicationKnowledge.medicineClassification` requires a cross-version extension.\nElement `MedicationKnowledge.medicineClassification.classification` is not mapped to FHIR STU3, since FHIR R4B `MedicationKnowledge` is not mapped.\nElement `MedicationKnowledge.medicineClassification.classification` has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element).",
"min": 0,
"max": "*",
"base": {
"path": "Extension.extension",
"min": 0,
"max": "*"
}
},
{
"id": "Extension.extension:classification.url",
"path": "Extension.extension.url",
"min": 1,
"max": "1",
"base": {
"path": "Extension.url",
"min": 1,
"max": "1"
},
"fixedUri": "classification"
},
{
"id": "Extension.extension:classification.value[x]",
"path": "Extension.extension.value[x]",
"short": "Specific category assigned to the medication",
"definition": "Specific category assigned to the medication (e.g. anti-infective, anti-hypertensive, antibiotic, etc.).",
"min": 0,
"max": "1",
"base": {
"path": "Extension.value[x]",
"min": 0,
"max": "1"
},
"type": [
{
"code": "CodeableConcept"
}
]
},
{
"id": "Extension.url",
"path": "Extension.url",
"min": 1,
"max": "1",
"base": {
"path": "Extension.url",
"min": 1,
"max": "1"
},
"fixedUri": "http://hl7.org/fhir/4.3/StructureDefinition/extension-MedicationKnowledge.medicineClassification"
},
{
"id": "Extension.value[x]",
"path": "Extension.value[x]",
"min": 0,
"max": "0",
"base": {
"path": "Extension.value[x]",
"min": 0,
"max": "1"
}
}
]
}
}