HL7 ORL^O22 (General Laboratory Order Acknowledgment Message)
ORL^O22 is the HL7v2 general laboratory order acknowledgment message message, defined in HL7v2 from v2.4 through v2.8.2. Its v2.8.2 structure carries 21 segments and groups, 7 of them required.
Full message structure (v2.8.2)
Every segment and group the standard defines for ORL^O22, in order, straight from the machine-readable specification. Indented rows sit inside the repeating group above them. R is required, O optional, C conditional; ∞ means the group or segment may repeat without a defined limit.
| Segment / group | Usage | Repeats |
|---|---|---|
| MSH | R | 1 |
| MSA | R | 1 |
| ERR | O | ∞ |
| SFT | O | ∞ |
| UAC | O | 1 |
| NTE | O | ∞ |
| RESPONSE (group) | O | 1 |
| PID | R | 1 |
| PRT | O | ∞ |
| ORDER (group) | O | ∞ |
| ORC | R | 1 |
| PRT | O | ∞ |
| TIMING (group) | O | ∞ |
| TQ1 | R | 1 |
| TQ2 | O | ∞ |
| OBSERVATION_REQUEST (group) | O | 1 |
| OBR | R | 1 |
| PRT | O | ∞ |
| SPECIMEN (group) | O | ∞ |
| SPM | R | 1 |
| SAC | O | ∞ |
Which HL7v2 versions changed ORL^O22?
ORL^O22 has been defined since v2.4. Consecutive versions sharing an identical structure are grouped, so a single row spanning several versions means nothing changed across them.
| Versions | What changed |
|---|---|
| v2.4 | First defined, with 16 segments and groups. |
| v2.5 - v2.5.1 | Added SFT, SPM, TQ1, TQ2. Removed OBX. |
| v2.6 | Added ROL, UAC. |
| v2.7 - v2.8.2 | Added PRT. Removed ROL. |