| Code | Complete | Precise | License | Maintained |
|---|---|---|---|---|
| atc | 83 | 10 | Open | Formalized |
| cis | 16 | 100 | Liberal | Formalized |
| cnk | 10 | 100 | ||
| cvc | 81 | 27 | Liberal | Structured |
| cvx | 88 | 15 | Open | |
| gt_standard | 1 | |||
| infarmed | 7 | 98 | ||
| nuva | 100 | 100 | Open | Regular, unstructured |
| snomed-ct | 78 | 0 | Closed | Formalized |