Value Set and Code System Information
Code System Name NullFlavor
Value Set Code PHVS_NullFlavor_HL7_V3
Value Set Name Null Flavor (HL7 V3)
Value Set Version 1
Value Set Concept Details
Concept Code NASK
Preferred Concept Name not asked
Value Set Concept Status Published
Value Set Concept Status Date 10/31/2008
Value Set Concept Description This information has not been sought (e.g., patient was not asked)
Sequence
Code System Concept Details
Code System Concept Name not asked
Code System Concept Status Published
Code System Preferred Concept Name not asked
Date Created
Date Revised 05/01/2009
Associated Value Sets
Value Set Name Version(s)
Contributory Tobacco Use (NCHS)  3 
Employment Status (ODH)  1 
HIV Status (STD)  3 ,  2 ,  1 
Null Flavor (HL7 V3)  1 
Race Category including Null Flavor  1 
Work Schedule (ODH)  1 
YNRD (CDC)  4 ,  3 ,  2 ,  1