ePath R4 Implementation Guide
1.0.1 - ci-build Japan

ePath R4 Implementation Guide - Local Development build (v1.0.1) built by the FHIR (HL7® FHIR® Standard) Build Tools. See the Directory of published versions

## Extension: EPathCarePlanEventElapsedDays - Detailed Descriptions

Active as of 2026-02-19

Definitions for the EPathCarePlanEventElapsedDays extension.

- Key Elements Table
- Differential Elements Table
- Snapshot Elements Table

Guidance on how to interpret the contents of this table can be foundhere

0. Extension
Definition | 病日 Optional Extension Element - found in all resources.
Short | EPath CarePlan EventElapsedDaysOptional Extensions Element
Control | 0..* This element is affected by the following invariants: ele-1
Is Modifier | false
Invariants | 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()`) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
2. Extension.extension
Definition | An Extension May be used to represent additional information that is not part of the basic definition of the element. 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 can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short | ExtensionAdditional content defined by implementations
Comments | 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.
Control | 0..0*
Type | Extension
Is Modifier | false
Summary | false
Alternate Names | extensions, user content
Invariants | 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 areUnordered 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.
Short | identifies the meaning of the extension
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.
Control | 1..1
Type | uri
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
Fixed Value | `http://e-path.jp/fhir/ePath/StructureDefinition/EPathCarePlanEventElapsedDays`
6. Extension.value[x]
Definition | 入院日から起算した当イベントの日数。当日が1から始まる日数。入院日より過去を示す場合は-1(入院日前日)からの負数で表す。（値0は存在しない）施設パスおよび適用後パス、適用後パスデータについては上記の通りであるが、ひな型パスについてはOATユニットが設定された最初の日を1とし、その日から始まる日数となる。 外来のケースにおいては、パス実施期間．開始日時の日を起算日とした当日が１から始まる日数を設定する。過去を示す場合は-1(開始日時の前日)からの負数で表す。また、4週後など日数が明確でない場合においても日数に換算して設定する。（値0は存在しない） Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short | 病日Value of extension
Control | 10..1
Type | integer, date, Meta, Address, Attachment, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, Signature, unsignedInt, time
[x] Note | SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))

Guidance on how to interpret the contents of this table can be foundhere

0. Extension
Definition | 病日
Short | EPath CarePlan EventElapsedDays
2. Extension.extension
Control | 0..0
4. Extension.url
Fixed Value | `http://e-path.jp/fhir/ePath/StructureDefinition/EPathCarePlanEventElapsedDays`
6. Extension.value[x]
Definition | 入院日から起算した当イベントの日数。当日が1から始まる日数。入院日より過去を示す場合は-1(入院日前日)からの負数で表す。（値0は存在しない）施設パスおよび適用後パス、適用後パスデータについては上記の通りであるが、ひな型パスについてはOATユニットが設定された最初の日を1とし、その日から始まる日数となる。 外来のケースにおいては、パス実施期間．開始日時の日を起算日とした当日が１から始まる日数を設定する。過去を示す場合は-1(開始日時の前日)からの負数で表す。また、4週後など日数が明確でない場合においても日数に換算して設定する。（値0は存在しない）
Short | 病日
Control | 1..?
Type | integer, date, Meta, Address, Attachment, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, Signature, unsignedInt, time
[x] Note | SeeChoice of Data Typesfor further information about how to use [x]
Primitive Value | This primitive element may be present, or absent, or replaced by an extension

Guidance on how to interpret the contents of this table can be foundhere

0. Extension
Definition | 病日
Short | EPath CarePlan EventElapsedDays
Control | 0..* This element is affected by the following invariants: ele-1
Is Modifier | false
Invariants | 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.
Short | Unique id for inter-element referencing
Control | 0..1
Type | string
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
4. Extension.extension
Definition | An Extension
Short | Extension
Control | 0..0
Type | Extension
Is Modifier | false
Summary | false
Invariants | 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 areUnordered and Open, and can be differentiated using the following discriminators: value @ url
6. Extension.url
Definition | Source of the definition for the extension code - a logical name or a URL.
Short | identifies the meaning of the extension
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.
Control | 1..1
Type | uri
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
Fixed Value | `http://e-path.jp/fhir/ePath/StructureDefinition/EPathCarePlanEventElapsedDays`
8. Extension.value[x]
Definition | 入院日から起算した当イベントの日数。当日が1から始まる日数。入院日より過去を示す場合は-1(入院日前日)からの負数で表す。（値0は存在しない）施設パスおよび適用後パス、適用後パスデータについては上記の通りであるが、ひな型パスについてはOATユニットが設定された最初の日を1とし、その日から始まる日数となる。 外来のケースにおいては、パス実施期間．開始日時の日を起算日とした当日が１から始まる日数を設定する。過去を示す場合は-1(開始日時の前日)からの負数で表す。また、4週後など日数が明確でない場合においても日数に換算して設定する。（値0は存在しない）
Short | 病日
Control | 1..1
Type | integer
[x] Note | SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)