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How to Code Common Cardiac Conditions October 28, 2021

How to Code Common Cardiac Conditions

The term cardiovascular disease (CVD) refers to conditions that affect the heart or blood vessels. Also, the World Health Organization (WHO) estimates 17.9 million people died from cardiovascular diseases in 2019, representing 32% of all global deaths. A majority of these deaths resulted from heart attacks and strokes. Overall, CVD is the most severe disorder afflicting the majority of Americans. 

Before discussing CVD in further detail, let’s examine documentation and diagnosis coding for cardiac conditions to ensure accurate and compliant practices. 

The table below shows the ICD-10 diagnosis codes for common cardiac conditions.

COMMON DIAGNOSESICD-10 DIAGNOSES CODESDEFINITION
Arch obstructionQ25.1Coarctation of the aorta
Q25.21Interrupted aortic arch
ArrhythmiasI47.0-I47.9Re-entry ventricular arrhythmia
I47.1Supraventricular tachycardia 
147.2Ventricular tachycardias
147.9Paroxysmal tachycardia, unspecified
Cardiac arrestI46.2Cardiac arrest due to underlying cardiac condition
I46.8Cardiac arrest, due to other underlying condition
I46.9Cardiac arrest, due to unspecified condition
CardiomyopathiesI42.0Dilated cardiomyopathy
142.1Obstructive hypertrophic cardiomyopathy
142.2Other hypertrophic cardiomyopathy
142.3Endomyocardial (eosinophilic) disease
142.4Endocardial fibroelastosis
142.5Other restrictive cardiomyopathy
142.6Alcoholic cardiomyopathy
142.7Cardiomyopathy due to drug and external agent
142.8Other cardiomyopathies
142.9Cardiomyopathy, unspecified
Source:  Extracorporeal Life Support Organization 2021

COMMON DIAGNOSESICD-10 DIAGNOSES CODESDEFINITION
Common arterial trunkQ20.0Truncus arteriosus
Congenital malformations of pulmonary and tricuspid valvesQ22.0Pulmonary valve atresia and intact ventricular septum
Q22.1Congenital pulmonary valve stenosis
Q22.2Congenital pulmonary valve insufficiency
Q22.3Other congenital malformations of the pulmonary valve including bicuspid and quadricuspid valves
Q22.4Congenital tricuspid stenosis
Q22.5Ebstein’s anomaly
Q22.6Hypoplastic right heart syndrome; tricuspid atresia
Q22.8Other congenital malformations of the tricuspid valve
Q22.9Congenital malformations of the tricuspid valve, unspecified
Discordant ventriculoarterial connectionQ20.3D- transposition of the great arteries, Aorta from the right ventricle, and pulmonary artery from the left ventricle.
Q20.5Corrected transposition of the great vessels, L-TGA
Double inlet left ventricleQ20.4Single ventricle
Double outlet right ventricleQ20.1Origin of both great vessels from the right ventricle. Includes Taussig-Bing anomaly
EndocarditisI33.0Acute and subacute infective endocarditis
Heart FailureI50.1-150.9Heart failure includes systolic, diastolic, and combined heart failure as well acute heart failure, chronic heart failure, and acute chronic heart failure.
I50.41Acute systolic (congestive) and diastolic (congestive) heart failure
I5.43Acute on chronic systolic (congestive) and diastolic (congestive) heart failure
I50.9Heart failure, unspecified
Hypoplastic left heart syndromeQ23.4HLHS includes all combinations of mitral stenosis/atresia and aortic stenosis/atresia
Q21.0Ventricular septal defect
Atrial septal defectQ21.1Includes PFO, Secundum ASD, coronary sinus ASD, and sinus venosus ASD. Does not include ostium primum ASD
Atrioventricular septal defectQ21.2Includes all forms of AVSD or endocardial cushion defects including primum ASD
Tetralogy of FallotQ21.3Includes TOF, TOF with pulmonary atresia, and TOF with absent pulmonary valve
Q21.4Aortopulmonary septal defect
Q21.8Other congenital malformations of cardiac septa
Q21.9Congenital malformation of the cardiac septum, unspecified
Total anomalous pulmonary venous connectionQ26.2Includes cardiac, supra cardiac, and infra cardiac TAPVC
Malformation of coronary vesselsQ24.5Includes anomalous origins of coronary arteries; coronary artery atresia; arteriovenous fistula; coronary aneurysm; myocardial bridging; and others
MyocarditisI40.0Infective myocarditis (excludes rheumatic heart disease)
140.1Isolated myocarditis
140.8Other acute myocarditis
140.9Acute myocarditis, unspecified
Source:  Extracorporeal Life Support Organization 2021

COMMON DIAGNOSESICD-10 DIAGNOSES CODESDEFINITION
Myocardial InfarctionI21.01-I21.4ST elevation and non ST elevation myocardial infarction
Poisoning with cardiovascular effectsT46.0X1A-T46.996DPoisoning by, adverse effect of and underdosing of agents primarily affecting the cardiovascular system
Pulmonary EmbolismI26.0-I26.01
I26.02Saddle embolus of the pulmonary artery with acute cor pulmonale
ShockR57.0Cardiogenic shock
R57.8Other shock
Aortic Valvular DiseaseI35.9Nonrheumatic aortic valve disorder, unspecified
Mitral Valvular DiseaseI34.0-I34.9Nonrheumatic mitral valve disorders
I34.9Nonrheumatic mitral valve disorder, unspecified
Source:  Extracorporeal Life Support Organization 2021

Through this guide, ordering physicians can ensure accurate ICD-10 diagnostic codes for cardiac conditions.

Coronary Artery Disease (CAD)

The other term for coronary artery disease (CAD) is sometimes called ischemic heart disease. CAD is the narrowing and hardening of the coronary arteries (the blood vessels that supply oxygen and blood to the heart). According to the Centers for Disease Control and Prevention (CDC), coronary artery disease (CAD) is the most common form of heart disease in the United States.

The table below shows ICD-10 codes for CAD:

ICD-10 CODES CADDESCRIPTION
I25Chronic ischemic heart disease
I25.1Atherosclerotic heart disease of native coronary artery
I25.10Atherosclerotic heart disease of native coronary artery, without angina pectoris
I25.11Atherosclerotic heart disease of native coronary artery with angina pectoris
I25.110Atherosclerotic heart disease of native coronary artery with unstable angina pectoris
I25.111Atherosclerotic heart disease of native coronary artery with unstable angina pectoris, with documented spasm
I25.118Atherosclerotic heart disease of native coronary artery with other forms of angina pectoris
I25.119Atherosclerotic heart disease of native coronary artery with unspecified angina pectoris

Tap Into Our Expertise

For professionals in the healthcare industry, knowledge of ICD-10 codes is essential in reporting common cardiovascular diseases. Our team can ensure accurate medical billing and coding for optimal reimbursement, as well!

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