Appendix 1:

Diagnosis Codes used to Identify Heart Failure

Diagnosis Codes	Heart Failure
ICD-9-CM Codes	“39891”, “428”, “40201”, “40211”, “40291”, “40401”, “40411”, “40491”, “40403”, “40413”, “40493”
ICD-10 Codes	“I0981”, “I501”, “I5020”, “I5021”, “I5022”, “I5023”, “I5030”, “I5031”, “I5032”, “I5033”, “I5040”, “I5041”, “I5042”, “I5043”, “I50810”, “I50811”, “I50812”, “I50813”, “I50814”, “I5082”, “I5083”, “I5084”, “I5089”, “I509”, “I110”, “I130”, “I132”

Abbreviation: CM, Clinical Modification; ICD, International Classification of Disease