I45.9

Applicable To

• Heart block NOS

• Stokes-Adams syndrome

Approximate Synonyms

• Cardiac dysrhythmia heart rhythm disorder)

• Conduction disorder of the heart

Clinical Information

• A condition of fainting spells caused by heart block, often an atrioventricular block, that leads to bradycardia and drop in cardiac output. When the cardiac output becomes too low, the patient faints syncope). In some cases, the syncope attacks are transient and in others cases repetitive and persistent.

• A disorder affecting the conduction system that sends electrical signals in the myocardium.

• A disorder characterized by pathological irregularities in the cardiac conduction system.

• Abnormality in rhythm of heartbeat, including rate, regularity, and/or sequence of activation abnormalities

• An episode of sudden and transient loss of consciousness sometimes associated with seizures. It is caused by a sudden decrease of the cardiac output that results from a sudden cardiac dysrhythmia. Typically patients develop an initial pallor, followed by facial flush during recovery.

• An impairment of transmission of the cardiac electrical impulse along the fibers normally responsible impulse propagation.

• Impaired conduction of cardiac impulse that can occur anywhere along the conduction pathway, such as between the sinoatrial node and the right atrium sa block) or between atria and ventricles av block). Heart blocks can be classified by the duration, frequency, or completeness of conduction block. Reversibility depends on the degree of structural or functional defects.

• Impairment of conduction in heart excitation; often applied specifically to atrioventricular heart block.

Details

• I45.9 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 I45.9 became effective on October 1, 2022.

• This is the American ICD-10-CM version of I45.9 – other international versions of ICD-10 I45.9 may differ.