ICD-9-CM Vol. 1 Diagnostic Codes →
7. DISEASES OF THE CIRCULATORY SYSTEM (390-459) →
section notes
OTHER FORMS OF HEART DISEASE (420-429) →
section notes
428 Heart failure →
section notes
428.2 Systolic heart failure →
section notes
428.20   Systolic hrt failure NOS
428.21   Ac systolic hrt failure
428.22   Chr systolic hrt failure
428.23   Ac on chr syst hrt fail
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