## DataType: ContactPoint

ContactType is used by telecome elements to descibe how to connect with a patient, practitioner, organization or server (e.g., phone, email, fax, etc..). It is of type [ContactPoint](http://hl7.org/fhir/2018Jan/datatypes.html#ContactPoint).

| Name | Card | Type | Comments 
|---|---|---|---|
|system| `1`..1 | code | Required |
|value| `1`..1 | string | Required |
|use| 0..1 | code | Can be used for home, work, mobile as extra information on top of ".rank". When ".rank" is not specificed, ".use = home" will be treated as the ".rank = 1" |
|rank| 0..1 | positiveInt | Can be used to indicate 1 (Primary) , 2 (Secondary), etc..., and is the preferred way to indicate phone use priority.  |
| ~~period~~ | ~~0..1~~ | ~~Period~~ | |