It is vital that efforts are made to find the CAD number, as this enables linkage of the record to ambulance data. Your A&E department should have access to the ambulance sheet (if paper) or the electronic ambulance record using the ambulance web viewer.
The CAD number varies depending on the Ambulance Trust. The correct format for Ambulance Trusts have been highlighted below:
| Ambulance Trust: | Format: |
| East Midlands Ambulance Service | 8 digits |
| East of England Ambulance Service | e-PCR: 10 digits with – as a separator |
| Paper record: 10 digits formed of date & 4 digits | |
| Isle of Wight | 11 digits reference starting “S” and then the date & 4 digits |
| London Ambulance Service | 4 digits |
| North East Ambulance Service | 8 digits |
| North West Ambulance Service | 8 digits |
| South Central Ambulance Service | 11 digits reference starting with “S” and then the date & 4 digits that starts back at 0 one second after midnight each day in the following format: SYYMMDD0000 |
| South East Coast Ambulance Service | e-PCR: any of the following 3 will be accepted as ‘CAD’: |
| 1. Daily ID (four-digits) | |
| 2. Full CAD ID (eight-digits) | |
| 3. Case reference (twelve-character). | |
| Paper record: 4 digits | |
| South West Ambulance Service | 8 digit numerical field unique to each incident |
| West Midlands Ambulance Service | 8 digits |
| Yorkshire Ambulance Service | 8 digits (was previously 7 digits however the limit has now been reached) |
Hospital teams can use this as a guide to ensure they are assigning to the right ambulance teams and entering the correct CAD numbers. If you have any issues identifying the CAD please try contacting the relevant ambulance teams. Logged in users can access contact information here: https://www.strokeaudit.org/Resources/Team-Codes-and-Contact-Lists.aspx