ICD-10-CM Code I50.9

Heart failure, unspecified

Version 2020 Replaced Code Billable Code Cardiology

Valid for Submission

I50.9 is a billable code used to specify a medical diagnosis of heart failure, unspecified. The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code I50.9 might also be used to specify conditions or terms like acute congestive heart failure, acute exacerbation of chronic congestive heart failure, acute heart failure, acute heart failure co-occurrent with normal ejection fraction, acute on chronic heart failure co-occurrent with normal ejection fraction, benign hypertensive heart disease, etc

The code is commonly used in cardiology medical specialties to specify clinical concepts such as heart failure.

ICD-10:I50.9
Short Description:Heart failure, unspecified
Long Description:Heart failure, unspecified

Replaced Code

This code was replaced in the 2020 ICD-10 code set with the code(s) listed below. The National Center for Health Statistics (NCHS) has published an update to the ICD-10-CM diagnosis codes which became effective October 1, 2019. This code was replaced for the FY 2020 (October 1, 2019 - September 30, 2020).

  • 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

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code I50.9:

Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • Cardiac, heart or myocardial failure NOS
  • Congestive heart disease
  • Congestive heart failure NOS

Type 2 Excludes

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.
  • fluid overload unrelated to congestive heart failure E87.70

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code I50.9 are found in the index:


Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Acute congestive heart failure
  • Acute exacerbation of chronic congestive heart failure
  • Acute heart failure
  • Acute heart failure co-occurrent with normal ejection fraction
  • Acute on chronic heart failure co-occurrent with normal ejection fraction
  • Benign hypertensive heart disease
  • Benign hypertensive heart disease with congestive cardiac failure
  • Cardiac arrest after obstetrical surgery AND/OR other procedure including delivery
  • Cardiac arrest AND/OR failure following anesthesia AND/OR sedation in labor AND/OR delivery
  • Cardiac edema
  • Cardiac failure after obstetrical surgery AND/OR other procedure including delivery
  • Chronic congestive heart failure
  • Chronic heart failure
  • Chronic heart failure co-occurrent with normal ejection fraction
  • Compensated cardiac failure
  • Complication of obstetrical surgery AND/OR procedure
  • Complication of obstetrical surgery AND/OR procedure
  • Congestive heart failure
  • Congestive heart failure as early postoperative complication
  • Congestive heart failure as post-operative complication of cardiac surgery
  • Congestive heart failure as post-operative complication of non-cardiac surgery
  • Congestive heart failure due to cardiomyopathy
  • Congestive heart failure due to valvular disease
  • Congestive heart failure stage B
  • Congestive heart failure stage B
  • Congestive heart failure stage B due to ischemic cardiomyopathy
  • Congestive heart failure stage C
  • Congestive heart failure stage C
  • Congestive heart failure stage C due to Ischemic cardiomyopathy
  • Congestive heart failure stage D
  • Congestive rheumatic heart failure
  • Decompensated cardiac failure
  • Decompensated chronic heart failure
  • Diastolic dysfunction
  • Disorder confirmed
  • Exacerbation of congestive heart failure
  • Heart failure
  • Heart failure as a complication of care
  • Heart failure confirmed
  • Heart failure due to end stage congenital heart disease
  • Heart failure with normal ejection fraction
  • Heart failure with reduced ejection fraction
  • Heart failure with reduced ejection fraction
  • Heart failure with reduced ejection fraction
  • Heart failure with reduced ejection fraction
  • Heart failure with reduced ejection fraction due to cardiomyopathy
  • Heart failure with reduced ejection fraction due to coronary artery disease
  • Heart failure with reduced ejection fraction due to heart valve disease
  • Heart failure with reduced ejection fraction due to myocarditis
  • Hypertensive heart AND chronic kidney disease with congestive heart failure
  • Hypertensive heart and renal disease with heart failure
  • Hypertensive heart and renal disease with heart failure
  • Hypertensive heart and renal disease with both heart failure and renal failure
  • Hypertensive heart disease with congestive heart failure
  • Hypertensive heart failure
  • Low cardiac output syndrome
  • Low output heart failure
  • Malignant hypertensive heart disease
  • Malignant hypertensive heart disease with congestive heart failure
  • Nail changes associated with systemic disease
  • Normal cardiac ejection fraction
  • Obstetrical cardiac complication of anesthesia AND/OR sedation
  • Pleural effusion due to another disorder
  • Pleural effusion due to congestive heart failure
  • Red half-moon nail in congestive heart failure
  • Refractory heart failure
  • Symptomatic congestive heart failure
  • X-linked intellectual disability, cardiomegaly, congestive heart failure syndrome

Clinical Information

  • 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 SYSTOLIC-. heart failure caused by abnormal myocardial contraction during systole leading to defective cardiac emptying.
  • HEART FAILURE DIASTOLIC-. heart failure caused by abnormal myocardial relaxation during diastole leading to defective cardiac filling.

Diagnostic Related Groups

The ICD-10 code I50.9 is grouped in the following groups for version MS-DRG V37.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC).
applicable from 10/01/2020 through 09/30/2020.

  • 222 - CARDIAC DEFIBRILLATOR IMPLANT WITH CARDIAC CATHETERIZATION WITH AMI/HF/SHOCK WITH MCC
  • 223 - CARDIAC DEFIBRILLATOR IMPLANT WITH CARDIAC CATHETERIZATION WITH AMI/HF/SHOCK WITHOUT MCC

Convert I50.9 to ICD-9

  • 428.0 - CHF NOS (Approximate Flag)
  • 428.9 - Heart failure NOS (Approximate Flag)

Code Classification

  • Diseases of the circulatory system (I00–I99)
    • Other forms of heart disease (I30-I52)
      • Heart failure (I50)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Patients


Heart Failure

Heart failure is a condition in which the heart can't pump enough blood to meet the body's needs. Heart failure does not mean that your heart has stopped or is about to stop working. It means that your heart is not able to pump blood the way it should. It can affect one or both sides of the heart.

The weakening of the heart's pumping ability causes

  • Blood and fluid to back up into the lungs
  • The buildup of fluid in the feet, ankles and legs - called edema
  • Tiredness and shortness of breath

Common causes of heart failure are coronary artery disease, high blood pressure and diabetes. It is more common in people who are 65 years old or older, African Americans, people who are overweight, and people who have had a heart attack. Men have a higher rate of heart failure than women.

Your doctor will diagnose heart failure by doing a physical exam and heart tests. Treatment includes treating the underlying cause of your heart failure, medicines, and heart transplantation if other treatments fail.

NIH: National Heart, Lung, and Blood Institute


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