Format/Length:	n3
National Codes:
Default Codes:	999 - Not known i.e. date of birth not known and age cannot be estimated

Notes:
AGE AT CDS ACTIVITY DATE is derived as the number of completed years between the PERSON BIRTH DATE of the PATIENT and the CDS ACTIVITY DATE.

AGE AT CDS ACTIVITY DATE is used by the Secondary Uses Service to derive the Healthcare Resource Group 4. Failure to correctly populate this data element is likely to result in an incorrect Healthcare Resource Group, usually associated with lower levels of healthcare resource.

For further information, please refer to the Secondary Uses Service Guidance page.

 

This data element is also known by these names:

Context	Alias
plural	AGES AT CDS ACTIVITY DATES