Code systems
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atc | 87 | 11 | Open | Formalized |
cis | 18 | 100 | Liberal | Formalized |
cvc | 83 | 29 | Liberal | Structured |
cvx | 90 | 16 | Open | |
gt_standard | 1 | |||
nuva | 100 | 100 | Open | Regular, unstructured |
snomed-ct | 81 | 4 | Closed | Formalized |