Question: What ICD-10-CM codes should I look to for systolic congestive heart failure? Ohio Subscriber Answer: You should report the following ICD-10-CM codes for systolic congestive heart failure: Don’t miss: HFrEF is the acronym for heart failure with reduced ejection fraction, which is also known as systolic heart failure. When a patient has systolic heart failure, the left ventricle of his heart is not able to contract normally, so his heart can’t pump with enough force to push enough blood into circulation.