Download Message Segment Specifications

Data Type Specifications
The following table describes the data types that may appear in the message segments.
Note: Brackets ([]) indicate that the enclosed data is optional.
Data Type
Category/
Data Type
Data Type Name
Notes/Format
Alphanumeric
ST
String
Any ACSII printable characters (ASCII decimal values between
32 and 126) with the exception of the defined delimiter
characters. Left justified with optional trailing spaces.
FT
Formatted text
String data with embedded formatting instructions.
CQ
Composite quantity
with units
<quantity (NM)> ^ <units (CE)>
NM
Numeric
Any of the ASCII numeric characters with an optional leading
sign (+ or -) and/or an optional decimal point.
Sequence ID
A non-negative integer in the form of a NM data type.
ID
Coded values for
HL7 tables
String data drawn from an HL7-defined table of legal values (see
Appendix A of HL7 2.3).
IS
Coded values for
user-defined tables
String data drawn from a site-defined table of legal values.
Hierarchic
designator
<namespace ID (IS)> ^ <universal ID (ST)> ^
<universal ID type (ID)>
Numerical
SI
Identifier
HD
Used only as part of EI and other data types.
EI
Entity identifier
<entity identifier (ST)> ^ <namespace ID (IS)>
^ <universal ID (ST)> ^<universal ID type (ID)>
PL
Person location
<point of care (IS)> ^ <room (IS)> ^ <bed (IS)>
^ <facility (HD)> ^ <location status (IS)> ^
<person location type (IS)> ^ <building (IS)>
^<floor (IS)> ^ <location description (ST)>
PT
Processing type
<processing ID (ID)> ^ <processing mode (ID)>
DT
Date
YYYY[MM[DD]]
TM
Time
HH[MM[SS[.S[S[S[S]]]]]][+/-ZZZZ]
TS
Time stamp
YYYY[MM[DD[HHMM[SS[.S[S[S[S]]]]]]]][+/ ZZZZ]^<degree of precision>
Date/Time
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• Chapter 3: Care360 Order HL7 Specification
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