# Value Sets
The following value sets are used in this implementation guide:

urn:iso:std:iso:11073:10101
 - This URN identifies the IEEE 11073 10101 nomenclature codes. These codes are used extensively in this profile.

http://hl7.org/fhir/IEEE.ASN1
 - This URL identifies the IEEE ASN.1 BITs field codes

http://pcha.org/phd/documents/reg-cert-codes
 - This URL identifies the Continua certified device and transports interface codes

http://pcha.org/phd/documents/reg-cert-wan-codes
 - This URL identifies the Continua certified Health and Fitness interface codes

urn:oid:1.2.840.10004.1.1.1.0.0.1.0.0.1.2680
 - This OID identifies the IEEE EUI coding system

http://loinc.org
 - This URL identifies the LOINC coding system

http://hl7.org/fhir/ValueSet/observation-valueabsentreason
 - This URL identifies the FHIR data absent reason codes