| Format/Length: | an7 YYYY-MM |
| National Codes: | |
| Default Codes: |
Notes:
YEAR AND MONTH OF BIRTH is the year and month of the recorded PERSON BIRTH DATE.
For the National Neonatal Data Set - Two Year Neonatal Outcomes Assessment, YEAR AND MONTH OF BIRTH is submitted instead of DATE TIME OF BIRTH, where the data set record is anonymised.
