The NK1 segment contains information about the patient’s other related parties, and any associated parties.  If necessary, multiple NK1 segments can be sent to patient accounts using the NK1-1-set ID field. If a person or organization fulfills multiple contact roles, for example, a person is an emergency contact and a next of kin, it is recommended to send a NK1 segment for each contact role (field 7).

NK1 Attributes

The NK1 fields are as follows:

SEQLENDTOPTRP/#ELEMENT NAME
14SIRSet ID – NK1
248XPNOYName
360CEORelationship
4106XADOYAddress
540XTNOYPhone Number
640XTNOYBusiness Phone Number
760CEOContact Role
88DTOStart Date
98DTOEnd Date
1060STONext of Kin / Associated Parties Job Title
1120JCCONext of Kin / Associated Parties Job Code/Class
1220CXONext of Kin / Associated Parties Employee Number
1390XONOYOrganization Name – NK1
1480CEOMarital Status
151ISOSex
1626TSODate/Time of Birth
172ISOYLiving Dependency
182ISOYAmbulatory Status
1980CEOYCitizenship
2060CEOPrimary Language
212ISOLiving Arrangement
2280CEOPublicity Code
231IDOProtection Indicator
242ISOStudent Indicator
2580CEOReligion
2648XPNOYMother’s Maiden Name
2780CEONationality
2880CEOYEthnic Group
2980CEOYContact Reason
3048XPNOYContact Person’s Name
3140XTNOYContact Person’s Telephone Number
32106XADOYContact Person’s Address
3332CXOYNext of Kin/Associated Party’s Identifiers
342ISOJob Status
3580CEOYRace
362ISOHandicap
3716STOContact Person Social Security Number

*Note: For the complete HL7 Standard, please go to the HL7 organization website.

In HL7 pipe and hat format, the NK1 segment (shown in red) for an ADT-A01 message would look like this:

MSH|^~\&|ADT1|MCM|LABADT|MCM|198808181126|SECURITY|ADT^A01|MSG00001|P|2.3|
EVN|A01|198808181123||
PID|||PATID1234^5^M11||JONES^WILLIAM^A^III||19610615|M||C|1200 N ELM STREET^^GREENSBORO^NC^27401‑1020|GL|(919)379‑1212|(919)271‑3434||S||PATID12345001^2^M10|123456789|987654^NC|
NK1|1|JONES^BARBARA^K|WIFE||||||NK^NEXT OF KIN||||||||||
PV1|1|I|2000^2012^01||||004777^LEBAUER^SIDNEY^J.|||SUR||||ADM|A0|

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