The PID segment is used by all applications as the primary means of communicating patient identification information. This segment contains permanent patient identifying and demographic information that, for the most part, is not likely to change frequently.

It should be noted that from V2.4 onwards the demographics of animals can also be sent in the PID segment (see PID-35 to PID-38).

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C.LenElementv2.7FHIR
11..4-SIO1-00104PID-1Set ID - PID-
2---W1-00105PID-2Patient ID4 mappings
3--CXR*-00106PID-3Patient Identifier List4 mappings
4---W1-00107PID-4Alternate Patient ID - PID4 mappings
5--XPNR*020000108PID-5Patient Namename[1]
6--XPNO*-00109PID-6Mother's Maiden Name2 mappings
7--DTMO1-00110PID-7Date/Time of Birth3 mappings
8--CWEO1000100111PID-8Administrative Sexgender
9---W1-00112PID-9Patient Aliasname[2]
10--CWEO*000500113PID-10Race-
11--XADO*-00114PID-11Patient Addressaddress[1]
12---W1-00115PID-12County Code4 mappings
13--XTNB*-00116PID-13Phone Number - Home2 mappings
14--XTNB*-00117PID-14Phone Number - Business2 mappings
15--CWEO1029600118PID-15Primary Languagecommunication.language
16--CWEO1000200119PID-16Marital StatusmaritalStatus
17--CWEO1000600120PID-17Religion2 mappings
18--CXO1-00121PID-18Patient Account NumberTableidentifier
19---W1-00122PID-19SSN Number - Patient5 mappings
20---W1-00123PID-20Driver's License Number - Patientidentifier[5]
21--CXO*-00124PID-21Mother's IdentifierTable$this
22--CWEO*018900125PID-22Ethnic Group-
23-250#STO1-00126PID-23Birth Place2 mappings
241-IDO1013600127PID-24Multiple Birth IndicatormultipleBirthBoolean
25-2=NMO1-00128PID-25Birth OrdermultipleBirthInteger
26--CWEO*017100129PID-26Citizenship3 mappings
27--CWEO1017200130PID-27Veterans Military Status-
28--CWEW1021200739PID-28Nationality3 mappings
29--DTMO1-00740PID-29Patient Death Date and TimedeceasedDateTime
301-IDO1013600741PID-30Patient Death IndicatordeceasedBoolean
311-IDO1013601535PID-31Identity Unknown Indicator-
32--CWEO*044501536PID-32Identity Reliability Code-
33--DTMO1-01537PID-33Last Update Date/TimeoccurredDateTime
34--HDO1-01538PID-34Last Update Facility3 mappings
35--CWEO1-01539PID-35Taxonomic Classification Code33 mappings
36--CWEB1044701540PID-36Breed CodeOptionality3 mappings
37-80=STO1-01541PID-37Strain-
38--CWEO2042901542PID-38Production Class Code-
39--CWEO*017101840PID-39Tribal Citizenship3 mappings
40--XTNO*-02289PID-40Patient Telecommunication Informationtelecom[3]
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