If your patient’s heart failure is not due to his or her hypertension, report separate codes for hypertension (I10) and heart failure (e.g., I50.-, I51.4-I51.9) and document accordingly. Heart failure is assumed to be due to hypertension when coded using I11.0, “Hypertensive heart disease with heart failure.” In ICD-10, the word “with” presumes a causal relationship between the two conditions linked by this term.
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