Data Set Constraints applied to the Critical Care Minimum Data Set.
Key to Data Set Constraint Column Headings:
| Column Name | Column Meaning | Column Options | |
| Format/Length | Indicates any differences between the Format/Length of the item in the NHS Data Model and Dictionary and the data set specification | None = The Format/Length is the same as the NHS Data Model and Dictionary | Any other entry = The Format/Length is different in the data set specification to the NHS Data Model and Dictionary |
| Range | Indicates whether a range value constraint has been applied in the data set specification | None = There is no range value constraint applied in the data set specification | Any other entry = Shows the range value constraint applied in the data set specification |
| Pattern Match | Indicates whether a data pattern, to which the data must conform, has been applied in the data set specification | None = There is no data pattern, to which the data must conform, applied in the data set specification | Any other entry = Shows the data pattern, to which the data must conform, applied in the data set specification |
Data Set Constraints:
| Data Element | Format/Length | Range | Pattern Match | Reason / Comment |
| CRITICAL CARE DISCHARGE DESTINATION | n2 | None | None | Existing Format/Length states max an3 -Data Set allows n2 |