Components: <identifier (ST)> ^ <text (ST)> ^ <name of coding system (ST)> ^ <alternate identifier (ST)> ^ <alternate text (ST)> ^ <name of alternate coding system (ST)>

Definition: This field contains the codes that should be those provided by NCCLS[2]. The following list is not exhaustive; it includes only examples.

Length≤60
6 components
1O-identifier
2O-text
3O-name of coding system
4O-alternate identifier
5O-alternate text
6O-name of alternate coding system