Clinical Document Architecture - Local Development build (v2.0.1-sd-202510-matchbox-patch) built by the FHIR (HL7® FHIR® Standard) Build Tools. See the Directory of published versions
| Official URL: http://hl7.org/cda/stds/core/StructureDefinition/oid | Version: 2.0.1-sd-202510-matchbox-patch | |||
| Active as of 2025-10-29 | Computable Name: oid | |||
A globally unique string representing an ISO Object Identifier (OID) in a form that consists only of numbers and dots (e.g., '2.16.840.1.113883.3.1').
Usages:
You can also check for usages in the FHIR IG Statistics
Description of Template, Differentials, Snapshots and how the different presentations work.
This structure is derived from string
| Name | Flags | Card. | Type | Description & Constraints    Filter:  ![]() ![]()  | 
|---|---|---|---|---|
![]()  | 
C | 0..* | string | Primitive Type string Constraints: oid-pattern  | 
![]() ![]()  | 
0..0 | xml:id (or equivalent in JSON) | ||
![]() ![]()  | 
0..0 | Extension | ||
  Documentation for this format | ||||
| Id | Grade | Path(s) | Description | Expression | 
| oid-pattern | error | string | Must conform to OID (#.#.#), UUID (32 hexadecimal digits separated by hyphens), or RUID (a letter followed by any combination of letters, numbers or hyphens) | 
      matches('^[0-2](\\.(0|[1-9][0-9]*))+$')
     | 
  
| Name | Flags | Card. | Type | Description & Constraints    Filter:  ![]() ![]()  | 
|---|---|---|---|---|
![]()  | 
C | 0..* | string | Primitive Type string Constraints: oid-pattern  | 
  Documentation for this format | ||||
| 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())
     | 
  
| oid-pattern | error | string | Must conform to OID (#.#.#), UUID (32 hexadecimal digits separated by hyphens), or RUID (a letter followed by any combination of letters, numbers or hyphens) | 
      matches('^[0-2](\\.(0|[1-9][0-9]*))+$')
     | 
  
| Name | Flags | Card. | Type | Description & Constraints    Filter:  ![]() ![]()  | 
|---|---|---|---|---|
![]()  | 
C | 0..* | string | Primitive Type string Constraints: oid-pattern  | 
![]() ![]()  | 
0..1 | string | Primitive value for string Max Length:1048576  | |
  Documentation for this format | ||||
| 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())
     | 
  
| oid-pattern | error | string | Must conform to OID (#.#.#), UUID (32 hexadecimal digits separated by hyphens), or RUID (a letter followed by any combination of letters, numbers or hyphens) | 
      matches('^[0-2](\\.(0|[1-9][0-9]*))+$')
     | 
  
This structure is derived from string
Differential View
This structure is derived from string
| Name | Flags | Card. | Type | Description & Constraints    Filter:  ![]() ![]()  | 
|---|---|---|---|---|
![]()  | 
C | 0..* | string | Primitive Type string Constraints: oid-pattern  | 
![]() ![]()  | 
0..0 | xml:id (or equivalent in JSON) | ||
![]() ![]()  | 
0..0 | Extension | ||
  Documentation for this format | ||||
| Id | Grade | Path(s) | Description | Expression | 
| oid-pattern | error | string | Must conform to OID (#.#.#), UUID (32 hexadecimal digits separated by hyphens), or RUID (a letter followed by any combination of letters, numbers or hyphens) | 
      matches('^[0-2](\\.(0|[1-9][0-9]*))+$')
     | 
  
Key Elements View
| Name | Flags | Card. | Type | Description & Constraints    Filter:  ![]() ![]()  | 
|---|---|---|---|---|
![]()  | 
C | 0..* | string | Primitive Type string Constraints: oid-pattern  | 
  Documentation for this format | ||||
| 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())
     | 
  
| oid-pattern | error | string | Must conform to OID (#.#.#), UUID (32 hexadecimal digits separated by hyphens), or RUID (a letter followed by any combination of letters, numbers or hyphens) | 
      matches('^[0-2](\\.(0|[1-9][0-9]*))+$')
     | 
  
Snapshot View
| Name | Flags | Card. | Type | Description & Constraints    Filter:  ![]() ![]()  | 
|---|---|---|---|---|
![]()  | 
C | 0..* | string | Primitive Type string Constraints: oid-pattern  | 
![]() ![]()  | 
0..1 | string | Primitive value for string Max Length:1048576  | |
  Documentation for this format | ||||
| 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())
     | 
  
| oid-pattern | error | string | Must conform to OID (#.#.#), UUID (32 hexadecimal digits separated by hyphens), or RUID (a letter followed by any combination of letters, numbers or hyphens) | 
      matches('^[0-2](\\.(0|[1-9][0-9]*))+$')
     | 
  
This structure is derived from string
Other representations of profile: CSV, Excel, Schematron