HL7 Data types

Data types in HL7 Message

Group	Data type Code	Data Type Name
Alphanumeric
	ST	String
	TX	Text Data
	FT	Formatted text
Numerical	CQ	Composite Quantity with Units
	MO	Money
	NM	Numeric
	SI	Sequence
	SN	Structured Number
Identifier
	ID	Coded values from HL7 Look up List
	IS	Coded values from user defined
	HD	Hierarchic designator
	EI	Entity identifier
	RP	Reference pointer
	PL	Person location
	PT	Processing type
Date and Time	DT	Date Only
	TM	Time Only
	TS	Time Stamp
Code Values	CE	Coded Element
	CF	Coded element with formatted values
	TN	Telephone Number
	XAD	Extended Address
	XPN	Extended Person Name
	XON	Extended composite name and ID number for organizations
	XTN	Extended telecommunications number

Examples :
1. Example for TS Date and Time data type in MSH Segment as follows
MSH|^~\&|aaa|My CLINICAL LAB|aaa|A232|201309050000||ORU^R01||P|2.3|

Format:
yyyyMMddHHmmss.SZ

Other Examples :
200202150930
20040822143045 [indicates date/time of Aug. 22, 2004 2:30 PM and 45 seconds]
20040822143045-0800 [indicates date/time of Aug. 22, 2004 2:30 PM and 45 seconds PST]