Heart failure (I50)
The ICD-10 code I50 covers various forms of heart failure, a condition where the heart struggles to pump blood effectively. This section includes specific codes for different types such as systolic, diastolic, left ventricular, right heart, combined, and high-output heart failure, helping healthcare providers identify the precise nature of the condition.
These codes are essential for coding detailed diagnoses like I50.1 for left ventricular failure, often known as chronic left-sided heart failure or acute congestive heart failure, and I50.21 for acute systolic heart failure, which may also be referred to as heart failure with reduced ejection fraction. Other distinctions include I50.31 for acute diastolic heart failure, commonly termed heart failure with normal ejection fraction, and I50.81 for right heart failure, sometimes called right ventricular failure or cardiac ascites. Recognizing these synonyms alongside their ICD-10 codes helps with accurate medical documentation and billing. Codes like I50.9 cover unspecified heart failure cases, including several synonyms such as congestive heart failure and heart failure following cardiac surgery. Understanding this range of codes improves clarity when documenting heart failure types in medical records and claims.
Diseases of the circulatory system (I00–I99)
Other forms of heart disease (I30-I5A)
I50 Heart failure
- I50.1 Left ventricular failure, unspecified
I50.2 Systolic (congestive) heart failure
- I50.20 Unspecified systolic (congestive) heart failure
- I50.21 Acute systolic (congestive) heart failure
- I50.22 Chronic systolic (congestive) heart failure
- I50.23 Acute on chronic systolic (congestive) heart failure
I50.3 Diastolic (congestive) heart failure
- I50.30 Unspecified diastolic (congestive) heart failure
- I50.31 Acute diastolic (congestive) heart failure
- I50.32 Chronic diastolic (congestive) heart failure
- I50.33 Acute on chronic diastolic (congestive) heart failure
I50.4 Combined systolic (congestive) and diastolic (congestive) heart failure
- I50.40 Unspecified combined systolic (congestive) and diastolic (congestive) heart failure
- I50.41 Acute combined systolic (congestive) and diastolic (congestive) heart failure
- I50.42 Chronic combined systolic (congestive) and diastolic (congestive) heart failure
- I50.43 Acute on chronic combined systolic (congestive) and diastolic (congestive) heart failure
I50.8 Other heart failure
I50.81 Right heart failure
- I50.810 Right heart failure, unspecified
- I50.811 Acute right heart failure
- I50.812 Chronic right heart failure
- I50.813 Acute on chronic right heart failure
- I50.814 Right heart failure due to left heart failure
- I50.82 Biventricular heart failure
- I50.83 High output heart failure
- I50.84 End stage heart failure
- I50.89 Other heart failure
- I50.9 Heart failure, unspecified
Heart failure (I50)
Instructional Notations
Code First
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.
- 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
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
Clinical Terms
The following clinical terms provide additional context, helping users better understand the clinical background and common associations for each diagnosis listed in this section. Including related terms alongside ICD-10-CM codes supports coders, billers, and healthcare professionals in improving accuracy, enhancing documentation, and facilitating research or patient education.
Diastole
Post-systolic relaxation of the HEART, especially the HEART VENTRICLES.
Heart Failure
A heterogeneous condition in which the heart is unable to pump out sufficient blood to meet the metabolic need of the body. Heart failure can be caused by structural defects, functional abnormalities (VENTRICULAR DYSFUNCTION), or a sudden overload beyond its capacity. Chronic heart failure is more common than acute heart failure which results from sudden insult to cardiac function, such as MYOCARDIAL INFARCTION.
Heart Failure, Diastolic
Heart failure caused by abnormal myocardial relaxation during DIASTOLE leading to defective cardiac filling.
Heart Failure, Systolic
Heart failure caused by abnormal myocardial contraction during SYSTOLE leading to defective cardiac emptying.
Systole
Period of contraction of the HEART, especially of the HEART VENTRICLES.
