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Patient Identity Subjects

The patient Identity subject is an identity subject that identifies a patient.

Patient subjects have the following attributes:

Subject Label	“Patient”
Subject type	Identity
Synchronization	Constant
Security	None
Subject Dependencies	None
Mapping Agent Coupon Value	-1

A patient can be identified using different identifiers by different applications at a site. For example, different applications may use application-specific medical record numbers to identify the same patient. Site-defined suffixes of subject identifier items identify the patient in different applications. A Patient-Link-enabled application should be configurable to use the appropriate suffix (or suffixes) when getting or setting context data.

Patient subjects have the following standard context data items. A Patient Linked application should set the value for at least one of the items listed in the following table:

Patient Subject Identifier Item Name	Meaning	Data Type	Semantic Constraints on Values	Case Sensitivity
Patient.Id.MRN.Suffix	Patient's medical record number, per PID-2	ST	HL7 Table 0203 Identifier Type = MR	No
Patient.Id.MPI	Patient's identifier in the “Master Patient Index”, per PID-2	ST	HL7 Table 0203 Identifier Type = PT or PI (as agreed upon by context sharing systems) and Assigning Authority represents the MPI system	No
Patient.Id.NationalIdNumber	Patient's national identifier number, per PID-2	ST	HL7 Table 0203 Identifier Type = PT and Assigning Authority represents agreed upon National Authority	No
Patient.Id.IdList	A list of patient identifiers for a patient, per PID-3	CX	May be a repeating set of CX item values, each of which contains one identifier that denotes the same patient (Driver's license and social security number may be among these identifiers)	No

An application can optionally set values for the corroborating items listed in the following table:

Patient Subject Corroborating Item Name	Meaning	Data Type	Semantic Constraints on Values	Case Sensitivity
Patient.Co.PatientName	Patient's legal name, per PID-5	XPN	Table 0200	No
Patient.Co.AliasName	Alias name for the patient, per PID-9	XPN	Table 0200	No
Patient.Co.DateTimeOfBirth	Patient's Date and time of birth, per PID-7	TS	None	No
Patient.Co.Sex	Patient's gender, per PID-8	IS	Table 0001	No
Patient.Co.DLN	Patient's driver's license number, per PID-20	DLN	None	No
Patient.Co.SSN	Patient's Social Security Number, per PID-19	ST	None	No

Examples of Patient Subject Items are listed in the following table:

Example Item Names	Example Item Values
Patient.Id.MPI	001KM002130-JJXXX-98
Patient.Id.MRN.St_Elsewhere_Clinic	SEC-KMAR-00hjd7792
Patient.Id.MRN.St_Somewhere_Clinic	SSC-KMAR-00WSB887455
Patient.Co.DateTimeOfBirth	19580317
Patient.Co.PatientName	Jason^King^^^^
Patient.Id.IdList.1	001KM002130-JJXXX-98^^^^PI^^^
Patient.Id.IdList.2	SEC-KMAR-00hjd7792^^^St_Elsewhere_Clinic&&^MR^^^
Patient.Id.IdList.3	SSC-KMAR-00WSB887455^^^St_Somewhere_Clinic&&^MR^^^