OBR - Observation Request (HL7 v2.4)
Versions: v2.3 v2.3.1 v2.4 v2.5.1 v2.6 v2.7.1
The OBR segment (Observation Request) has 47 fields in HL7 v2.4. Fields are addressed as
OBR-n; composite fields break into components OBR-n.m. Paste a message into the
parser to see every field annotated with this table.
| # | Name | Type | Len | Opt | Repeats | Table |
|---|---|---|---|---|---|---|
| 1 | Set ID - OBR | SI | 4 | Optional | No | |
| 2 | Placer Order Number | EI | 22 | Optional | No | |
| 3 | Filler Order Number | EI | 22 | Optional | No | |
| 4 | Universal Service Identifier | CE | 250 | Required | No | |
| 5 | Priority | ID | 2 | Optional | No | |
| 6 | Requested Date/Time | TS | 26 | Optional | No | |
| 7 | Observation Date/Time | TS | 26 | Optional | No | |
| 8 | Observation End Date/Time | TS | 26 | Optional | No | |
| 9 | Collection Volume * | CQ | 20 | Optional | No | |
| 10 | Collector Identifier * | XCN | 250 | Optional | Yes | |
| 11 | Specimen Action Code * | ID | 1 | Optional | No | 0065 |
| 12 | Danger Code | CE | 250 | Optional | No | |
| 13 | Relevant Clinical Info. | ST | 300 | Optional | No | |
| 14 | Specimen Received Date/Time * | TS | 26 | Optional | No | |
| 15 | Specimen Source | SPS | 300 | Optional | No | |
| 16 | Ordering Provider | XCN | 250 | Optional | Yes | |
| 17 | Order Callback Phone Number | XTN | 250 | Optional | Max 2 | |
| 18 | Placer Field 1 | ST | 60 | Optional | No | |
| 19 | Placer Field 2 | ST | 60 | Optional | No | |
| 20 | Filler Field 1 + | ST | 60 | Optional | No | |
| 21 | Filler Field 2 + | ST | 60 | Optional | No | |
| 22 | Results Rpt/Status Chng - Date/Time + | TS | 26 | Optional | No | |
| 23 | Charge to Practice + | MOC | 40 | Optional | No | |
| 24 | Diagnostic Serv Sect ID | ID | 10 | Optional | No | 0074 |
| 25 | Result Status + | ID | 1 | Optional | No | 0123 |
| 26 | Parent Result + | PRL | 400 | Optional | No | |
| 27 | Quantity/Timing | TQ | 200 | Optional | Yes | |
| 28 | Result Copies To | XCN | 250 | Optional | Max 5 | |
| 29 | Parent Number | EIP | 200 | Optional | No | |
| 30 | Transportation Mode | ID | 20 | Optional | No | 0124 |
| 31 | Reason for Study | CE | 250 | Optional | Yes | |
| 32 | Principal Result Interpreter + | NDL | 200 | Optional | No | |
| 33 | Assistant Result Interpreter + | NDL | 200 | Optional | Yes | |
| 34 | Technician + | NDL | 200 | Optional | Yes | |
| 35 | Transcriptionist + | NDL | 200 | Optional | Yes | |
| 36 | Scheduled Date/Time + | TS | 26 | Optional | No | |
| 37 | Number of Sample Containers * | NM | 4 | Optional | No | |
| 38 | Transport Logistics of Collected Sample * | CE | 250 | Optional | Yes | |
| 39 | Collector's Comment * | CE | 250 | Optional | Yes | |
| 40 | Transport Arrangement Responsibility | CE | 250 | Optional | No | |
| 41 | Transport Arranged | ID | 30 | Optional | No | 0224 |
| 42 | Escort Required | ID | 1 | Optional | No | 0225 |
| 43 | Planned Patient Transport Comment | CE | 250 | Optional | Yes | |
| 44 | Procedure Code | CE | 250 | Optional | No | 0088 |
| 45 | Procedure Code Modifier | CE | 250 | Optional | Yes | 0340 |
| 46 | Placer Supplemental Service Information | CE | 250 | Optional | Yes | 0411 |
| 47 | Filler Supplemental Service Information | CE | 250 | Optional | Yes | 0411 |
Synthetic example
OBR|1|HGP26-004471^HARBOURGP|MP26-778812^METROPATH|26604007^Full blood count^SCT|||20260822141500