I49.5

Applicable To

• Tachycardia-bradycardia syndrome

Approximate Synonyms

• Bradycardia tachycardia syndrome

• Sinus node dysfunction

• Tachycardia-bradycardia

Clinical Information

• A condition caused by dysfunctions related to the sinoatrial node including impulse generation cardiac sinus arrest) and impulse conduction sinoatrial exit block). It is characterized by persistent bradycardia, chronic atrial fibrillation, and failure to resume sinus rhythm following cardioversion. This syndrome can be congenital or acquired, particularly after surgical correction for heart defects.

• A constellation of signs and symptoms which may include syncope, fatigue, dizziness, and alternating periods of bradycardia and atrial tachycardia, which is caused by sinoatrial node dysfunction.

• A disorder characterized by a dysrhythmia with alternating periods of bradycardia and atrial tachycardia accompanied by syncope, fatigue and dizziness.

Details

• I49.5 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 I49.5 became effective on October 1, 2022.

• This is the American ICD-10-CM version of I49.5 – other international versions of ICD-10 I49.5 may differ.