Where used:
| Class | INTERVENTION CLASSIFICATION ASSOCIATION | has an attribute PATIENT PROCEDURE CODING SIGNIFICANCE |
| Data Element | PRIMARY OPERATION (OPCS-4) | references in description PATIENT PROCEDURE CODING SIGNIFICANCE |
| Data Element | PRIMARY PROCEDURE (OPCS) | references in description PATIENT PROCEDURE CODING SIGNIFICANCE |
| Data Element | PRIMARY PROCEDURE (READ) | references in description PATIENT PROCEDURE CODING SIGNIFICANCE |