6.2.4 Post-coordinated Codes and Has Concept Modifier Relationship
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### 6.2.4 Post-coordinated Codes and Has Concept Modifier Relationship

Though it may not be explicitly shown in a particular Template, the use of any coded Concept Name in any Content Item may be defined in a post-coordinated rather than pre-coordinated manner, unless explicitly forbidden by the IOD or the Template.

Accordingly, any such Content Item may have any number of Target Content Items via a "HAS CONCEPT MOD" relationship, even if not explicitly specified in a Template. Each Target Content Item of such a relationship may be more complicated than a single Content Item if the IOD permits (i.e., the post-coordinated concept may potentially be defined by a complex sub-tree).

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6.2.3 Inclusion of Templates | Home | 6.2.5 Extension of Templates