I50.20 – Unspecified systolic (congestive) heart failure

ICD-10-CM 2027 diagnosis code · Other forms of heart disease

Billable code

ICD-10-CM code I50.20

Code: I50.20 (claims format: I5020)
Description: Unspecified systolic (congestive) heart failure
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 9. Diseases of the circulatory system (I00-I99)
Block: I30-I5A Other forms of heart disease
Parent codes: I50 › I50.2

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

I50 – Heart failure

Excludes2 (not included here):

cardiac arrest (I46.-)
neonatal cardiac failure (P29.0)

Code first:

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)

I50.2 – Systolic (congestive) heart failure

Applicable to:

Heart failure with reduced ejection fraction [HFrEF]
Systolic left ventricular heart failure

Excludes1 (not coded here):

combined systolic (congestive) and diastolic (congestive) heart failure (I50.4-)

Code also:

end stage heart failure, if applicable (I50.84)

Index terms for I50.20

Entries in the ICD-10-CM alphabetic index that lead to this code:

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

Related codes in I50.2

Frequently asked questions

What is ICD-10 code I50.20?

I50.20 is the ICD-10-CM code for unspecified systolic (congestive) heart failure, in the block I30-I5A (Other forms of heart disease).

Is I50.20 a billable code?

Yes. I50.20 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does I50.20 belong to?

It belongs to category I50 – Heart failure.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.