ICD-9 Dual Coding
An example CD:Where 989.5 is: "Toxic effect of venom" and E905.9 is: "Bite or sting"
ICD-9DualCoding_ICD-9DualCoding
http://purl.bioontology.org/ontology/HL7/ICD-9DualCoding_ICD-9DualCoding