> ## Documentation Index
> Fetch the complete documentation index at: https://help.elationhealth.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Message Header (MSH)
R = required. O = optional `YYYYMMDDhhmm` are in 24hr format char(x) means maximum x characters
| seq | type | opt | Description |
| --- | ---------------- | --- | -------------------------------------------------------------------------------------------------------------------------------------- |
| 3 | char(5) | R | PATH: pathology report RAD: imaging/radiology report TRANS: transcription/hospital `reportNull` or all other values: laboratory report |
| 4 | char(50) | R | Sending Facility ID |
| 6 | char(50) | R | Receiving Facility ID |
| 7 | `YYYYMMDDhhmmss` | R | Date/Time Of Message |
```text text theme={null}
MSH|^~\&|TRANS|LVMH||SFMH|20160918200148|||||
MSH|^~\&|RAD|LVMH||SFMH|20160918200148|||||
```
