This code system http://hl7.org/fhir/uv/epi-test/CodeSystem/questi-dimens-cs defines the following codes:

Code	Display	Definition
None	None	None
F	Female	Female
M	Male	Male
O	Other Gender	Other Gender
ND	Non-disclosed Gender	Non-disclosed Gender
0	Non Smoker
1	1-5
2	6-20
3	>20
SINGLE	single
SOME	Some
SOME23	Some (2-3)
MANY	Many
Low	Low	Low
Medium	Medium	Medium
High	High	High
U	Unemployed/Retired
EM	Employed Manual
ENM	Employed non Manual