Definition: The entity identifier defines a given entity within a specified series of identifiers.
The EI is appropriate for, but not limited to, machine or software generated identifiers. The generated identifier goes in the first component. The remaining components, 2 through 4, are known as the assigning authority; they identify the machine/system responsible for generating the identifier in component 1.
4
| Comp# | FHIR | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 168 | - | - | O | - | EI.1 | Entity Identifier | ||
| 2 | 169 | - | - | O | EI.2 | Namespace ID | |||
| 3 | 170 | - | - | C | - | EI.3 | Universal ID | ||
| 4 | 171 | 6 | - | C | EI.4 | Universal ID Type |
128
5