This is the ValueSet that contains codes in both Smoking Status Type (http://cts.nlm.nih.gov/fhir/ValueSet/2.16.840.1.113762.1.4.1267.6) and Cigarette Smoking Before and During Pregnancy (http://hl7.org/fhir/us/bfdr/ValueSet/cigarette-smoking-before-during-pregnancy).