I42.1

Applicable To

• Hypertrophic subaortic stenosis idiopathic)

Approximate Synonyms

• Cardiomyopathy, hypertrophic obstructive

• Hypertrophic obstructive cardiomyopathy

• Idiopathic hypertrophic subaortic stenosis

Clinical Information

• A condition in which the myocardium is hypertrophied without an obvious cause. The hypertrophy is generally asymmetric and may be associated with obstruction of the ventricular outflow tract.

• A form of cardiac muscle disease, characterized by left and/or right ventricular hypertrophy hypertrophy, left ventricular; hypertrophy, right ventricular), frequent asymmetrical involvement of the heart septum, and normal or reduced left ventricular volume. Risk factors include hypertension; aortic stenosis; and gene mutation; familial hypertrophic cardiomyopathy).

• Myocardial disease characterized by hypertrophy, involving mainly the interventricular septum, interfering with left ventricular emptying.

Details

• I42.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

• The 2023 edition of ICD-10-CM I42.1 became effective on October 1, 2022.

• This is the American ICD-10-CM version of I42.1 – other international versions of ICD-10 I42.1 may differ.