| Format/Length: | See DATE | 
| HES Item: | OPDATE1 | 
| National Codes: | |
| Default Codes: | 
Notes:
PRIMARY PROCEDURE DATE is the same as attribute ACTIVITY DATE where the ACTIVITY DATE TYPE is National Code 'Primary Procedure Date'.
This data element is also known by these names:
| Context | Alias | 
|---|---|
| plural | PRIMARY PROCEDURE DATES | 
