---
schema_version: "1"
id: d460c08ccd0e9bce60d22fc6444dd8bb923a213096f2e313316c17514c0cbae1
title: Identifier
collection: legacydeveloper
version: current
locale: en-us
portal_url: https://docs.salesforce.com/legacydeveloper/current/en-us/life_sciences_dev_guide/map_fhir_Identifier.md
canonical_url: https://developer.salesforce.com/docs/atlas.en-us.life_sciences_dev_guide.meta/life_sciences_dev_guide/map_fhir_Identifier.htm
source_site: developer.salesforce.com
content_type: documentation
content_hash: b11812fca4dc488ed4f9c35ba7df03047a05602b1a109c3e6fa0925d8d6f534d
description: The Identifier FHIR resource maps to the Identifier object in Salesforce.
---
# Identifier

The Identifier FHIR resource maps to the Identifier object in Salesforce.

## FHIR V4.0 - Clinical Data Model Mapping

Here’s how the fields defined by FHIR for [Identifier](https://www.hl7.org/fhir/datatypes.html#Identifier) map to the fields in Salesforce.

Table 1. Identifier - Salesforce
| Identifier Resource | Salesforce Field | Type | Salesforce Cardinality | Notes |
| --- | --- | --- | --- | --- |
| use | Identifier​.IdUsage​Type | Picklist | 0.1 | FHIR defines identifier​.use as a code set. However, the Salesforce implementation of Identifier​.IdUsage​Type is a dynamic picklist because of the limited list of possible values. |
| type | Identifier​.IdTypeId | Polymorphic Lookup: CodeSet, CodeSet​Bundle | 0.1 | N/A |
| system | Identifier​.Source​System | String | 0.1 | FHIR defines identifier​.system as a URI. However, the Salesforce implementation of Identifier​.Source​System is a string because Salesforce doesn’t support the URI data type. |
| value | Identifier​.IdValue | String | 0.1 | N/A |
| period | Identifier​.Effective​Date | DateTime | 0.1 | In Salesforce’s implementation, identifier​.period is split into two fields, Identifier​.Effective​Date and Identifier​.End​Date. |
| period | Identifier​.End​Date | DateTime | 0.1 | In Salesforce’s implementation, identifier​.period is split into two fields, Identifier​.Effective​Date and Identifier​.End​Date. |
| assigner | Identifier​.Issuing​Authority​Id | Lookup: Account | 0.1 | N/A |

#### See Also

- [Identifier](https://developer.salesforce.com/docs/atlas.en-us.life_sciences_dev_guide.meta/life_sciences_dev_guide/hc_r4_api_objects_Identifier.htm "Represents identifier information for multiple objects. This object is available in API version 51.0 and later.")