A narrative text explanation of the meaning of a that may exceed the maximum permitted length for a .
Notes
Textual definitions are optional and are only provided for a limited number of , where there is a requirement additional detail.
Textual definitions are distributed as with a .
A file that conforms to the standard format is used to distribute textual definitions. However, descriptions in this file have a maximum permitted length of 4096 characters.
Textual definitions should not be confused with the formal logic definitions of concepts expressed using or .
Example
One use of textual definitions is to indicate alignment of a with a specific clinical definition of a condition. For example has the following textual definition: