I50.43
Acute on chronic combined systolic (congestive) and diastolic (congestive) heart failure
HCC risk adjustment mapping
CMS-HCC V28
Acute on Chronic Heart Failure
CMS-HCC ESRD V24
Congestive Heart Failure
RxHCC V08
Heart Failure
Coding notes
Excludes 1 never coded together · Excludes 2 may co-exist
end stage heart failure, if applicable (I50.84)
Combined systolic and diastolic left ventricular heart failure Heart failure with reduced ejection fraction and diastolic dysfunction
heart failure complicating abortion or ectopic or molar pregnancy (O00-O07, O08.8) heart failure due to hypertension (I11.0) heart failure due to hypertension with chronic kidney disease (I13.-) heart failure following surgery (I97.13-) obstetric surgery and procedures (O75.4) rheumatic heart failure (I09.81)
certain conditions originating in the perinatal period (P04-P96) certain infectious and parasitic diseases (A00-B99) complications of pregnancy, childbirth and the puerperium (O00-O9A) congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99) endocrine, nutritional and metabolic diseases (E00-E88) injury, poisoning and certain other consequences of external causes (S00-T88) neoplasms (C00-D49) symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94) systemic connective tissue disorders (M30-M36) transient cerebral ischemic attacks and related syndromes (G45.-)
Official Guidelines for I50.43
FY 2026 ›Sections that reference I50.43
- I.C.9.a.1)Hypertension with Heart Disease
Hypertension with heart conditions classified to I50.-, Heart failure, I51.4, Myocarditis, unspecified, I51.89, Other ill-defined heart diseases, and I51.9, Heart disease, …
- I.C.9.a.3)Hypertensive Heart and Chronic Kidney Disease
… If heart failure is present, assign an additional code from category I50 to identify the type of heart failure. …
Sections whose FY 2026 text names I50.43, its I50 category, or a range containing it — the chapter guidance above is the authoritative source.
Find I50.43 in the alphabetic index
6 index paths lead to this code
- Failure, failed › heart › with › decompensation › combined systolic and diastolic
- Failure, failed › heart › diastolic › combined with systolic › acute › and
- Failure, failed › heart › diastolic › combined with systolic › chronic › and
- Failure, failed › Note: heart failure stages A, B, C, and D are based on the American College of Cardiology and American Heart Association stages of heart failure, which complement and should not be confused with the New York Heart Association Classification of Heart Failure, into Class I, Class II, Class III, and Class IV › systolic › combined with diastolic › acute › and
- Failure, failed › Note: heart failure stages A, B, C, and D are based on the American College of Cardiology and American Heart Association stages of heart failure, which complement and should not be confused with the New York Heart Association Classification of Heart Failure, into Class I, Class II, Class III, and Class IV › systolic › combined with diastolic › chronic › and
- Failure, failed › heart › with › decompensation › with › reduced ejection fraction › with diastolic dysfunction