Do ICD-10 diagnosis codes accurately identify acute heart failure hospitalization and differentiate HFrEF from HFpEF in a national Medicare sample?
ICD-10 codes are valid and reliable tools for identifying acute heart failure hospitalizations and differentiating between HFrEF and HFpEF in Medicare claims data.
ICD-10 principal diagnosis identified acute HF hospitalization with a high positive predictive value. Systolic and diastolic ICD-10 diagnoses reliably identified heart failure with reduced ejection fraction and HFpEF when EF 50% was used as the cutoff.
Bates et al. (Mon,) studied this question.