| Permitted value | Language | Designation | Definition |
|---|---|---|---|
| WHO grading - standard form - 1st edition | EN | 1st edition | WHO grading - standard form - 1st edition |
| WHO grading - standard form - 2nd edition | EN | 2nd edition | WHO grading - standard form - 2nd edition |
| WHO grading - standard form - 3rd edition | EN | 3rd Edition | WHO grading - standard form - 3rd edition |
| WHO grading - standard form - 4th edition | EN | 4th Edition | WHO grading - standard form - 4th edition |
| WHO grading - standard form - 5th edition | EN | 5th Edition | WHO grading - standard form - 5th edition |
| WHO grading - standard form - 6th Edition | EN | 6th Edition | WHO grading - standard form - 6th Edition |
| WHO grading - standard form - 7th Edition | EN | 7th Edition | WHO grading - standard form - 7th Edition |
| WHO grading - standard form - Not known | EN | Not known | WHO grading - standard form - Not known |