Description
Return their JSON-array key.
Clinical identifiers and references have a namespace, target, and sometimes a version or contained-resource scope. Parsing their spelling does not resolve the target or establish semantic identity.
Return their JSON-array key.
When to use this tool
Use FHIR Identifier System Value Pair when you need one supported clinical-reference or scoped-identifier component.
How to use the tool and how it works
- Enter system, value. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read key. Use the output convention below.
Require system with a URI-like scheme prefix and no whitespace or ASCII control characters, plus nonempty value. Return their JSON-array key.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| system | System | Required. Text; maximum UTF-16 length 8192. |
| value | Value on the measurement or record basis stated above. | Required. Text; maximum UTF-16 length 8192. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| key | Key | Required. Text; maximum UTF-16 length 8192. |
{
"input": {
"system": "urn:example:mrn",
"value": "00123"
},
"output": {
"key": "[\"urn:example:mrn\",\"00123\"]"
}
}Limitations and assumptions
- This is a scoped identifier pair rather than full URI validation or a registry lookup; assignment, uniqueness, identity, and clinical semantics are not verified.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
Alternative or Complementary methods
Use a complete standard-aware resolver and verify terminology, resource identity, and applicable profiles separately.
References
Similar or alternative tools
- Terminology Code System Token
Return a JSON-array key with version or null when unknown.
- FHIR Coding Version Display Pair
Return a JSON-array identityKey of system, version, and code, and independent nonempty version and display flags.