18.3.49 SNM - string of telephone number digits (2A.3.72)

HL7 Component Table - SNM - String of Telephone Number Digits

Core Framework									Base Standard Profile
Seq#	Description	Interpretation	Flags	Cardinality	Length	C.LEN	Vocabulary	Data Type	Implement	Cardinality	Vocabulary
SNM
1	String of telephone number digits			[0..1]				SNM

Definition: A string whose characters are limited to "+" and/or the decimal digits 0 through 9. As a string, leading zeros are always considered significant.

Used only in the XTN data type as of v2.7.

SNM is used for telephone numbers, so it is never appropriate to truncate values of type SNM.