This is the ValueSet that contains codes in both Results Specimen Collection Method - IPS (http://hl7.org/fhir/uv/ips/ValueSet/results-specimen-collection-method-uv-ips) and Specimen Collection Method (http://cts.nlm.nih.gov/fhir/ValueSet/2.16.840.1.113762.1.4.1267.44).