This value set includes codes based on the following rules:

• Include these codes as defined in http://hl7.org/fhir/v3/MaritalStatus version 2016-11-11

  Code	Display	Definition
  A	Annulled	Marriage contract has been declared null and to not have existed
  D	Divorced	Marriage contract has been declared dissolved and inactive
  I	Interlocutory	Subject to an Interlocutory Decree.
  L	Legally Separated	Legally Separated
  M	Married	A current marriage contract is active
  P	Polygamous	More than 1 current spouse
  S	Never Married	No marriage contract has ever been entered
  T	Domestic partner	Person declares that a domestic partner relationship exists.
  U	unmarried	Currently not in a marriage contract.
  W	Widowed	The spouse has died

• Include these codes as defined in http://hl7.org/fhir/v3/NullFlavor version 2016-11-11

  Code	Display	Definition
  UNK	unknown	Description:A proper value is applicable, but not known. Usage Notes: This means the actual value is not known. If the only thing that is unknown is how to properly express the value in the necessary constraints (value set, datatype, etc.), then the OTH or UNC flavor should be used. No properties should be included for a datatype with this property unless: Those properties themselves directly translate to a semantic of "unknown". (E.g. a local code sent as a translation that conveys 'unknown') Those properties further qualify the nature of what is unknown. (E.g. specifying a use code of "H" and a URL prefix of "tel:" to convey that it is the home phone number that is unknown.)

This value set expansion contains 11 concepts.

                       Usage Notes: This means the actual value is not known.  If the only thing that is unknown is how to properly express the value in the necessary constraints (value set, datatype, etc.), then the OTH or UNC flavor should be used.  No properties should be included for a datatype with this property unless:

                    
                       Those properties themselves directly translate to a semantic of "unknown".  (E.g. a local code sent as a translation that conveys 'unknown')
                       Those properties further qualify the nature of what is unknown.  (E.g. specifying a use code of "H" and a URL prefix of "tel:" to convey that it is the home phone number that is unknown.)