1. Centers for Disease Control and Prevention. Heart Failure. 2016; https://www.cdc.gov/dhdsp/data_statistics/fact_sheets/fs_heart_failure.htm. Accessed Nov 16, 2016.
2. American College of Cardiology. Heart failure: differences between ICD-10-CM and ICD-9-CM terminology. http://www.acc.org/tools-and-practice-support/practice-solutions/coding-and-reimbursement/icd-10/monthly-tips/icd10%20tips/december-heart-failure-differences-between-icd-10-and-icd-9-cm-terminology.
3. ICD-10 LifeLine for Physicians. Diagnosis: congestive heart failure. https://www.beaumont.edu/Global/Doctor/ICD10/icd-10_lifeline_for_physicians-feb.26.pdf.
4. ACC/AHA 2005 Guideline Update for the Diagnosis and Management of Chronic Heart Failure in the Adult
5. ACCF/AHA guideline for the management of heart failure;Yancy;Circulation,2013