Sinus node dysfunction, previously known as sick sinus syndrome, describes disorders related to abnormal conduction and propagation of electrical impulses at the sinoatrial node. An abnormal atrial rate may result in the inability to meet physiologic demands, especially during periods of stress or physical activity.
Sinus node dysfunction is a disease that is characterized by the inability of the sinoatrial node of producing an adequate heart rate that meets the physiologic needs of an individual.
ICD-10 code I49. 5 for Sick sinus syndrome is a medical classification as listed by WHO under the range - Diseases of the circulatory system .
Sinus node dysfunction (SND) occurs as a result of disorders in automaticity, conduction, or both of the sinoatrial (SA) node. Local cardiac pathology, systemic diseases that involve the heart, and medications or toxins can all be responsible for abnormal SA node function and may result in SND.
"427.81 - Sinoatrial Node Dysfunction." ICD-10-CM, 10th ed., Centers for Medicare and Medicaid Services and the National Center for Health Statistics, 2018.
AF results in sinus node remodeling on a cellular and molecular basis that may promote SSS. However, not all patients with atrial fibrillation have SSS. Though “AF begets AF”, AF may also beget SSS; and SSS may also beget AF. Multiple studies have demonstrated that sinus node dysfunction may precede the onset of AF.
ICD-10 code I49. 9 for Cardiac arrhythmia, unspecified is a medical classification as listed by WHO under the range - Diseases of the circulatory system .
R00. 2 Palpitations - ICD-10-CM Diagnosis Codes.
427.9 - Cardiac dysrhythmia, unspecified. ICD-10-CM.
Overview. Sick sinus syndrome is a type of heart rhythm disorder. It affects the heart's natural pacemaker (sinus node), which controls the heartbeat. Sick sinus syndrome causes slow heartbeats, pauses (long periods between heartbeats) or irregular heartbeats (arrhythmias).
When something goes wrong with the sinoatrial node, you may develop a consistently slow heartbeat (sinus bradycardia) or the normal pacemaker activity may stop entirely (sinus arrest). If sinus arrest occurs, usually another area of the heart takes over pacemaker activity.
Diagnosing SSS To make the diagnosis, your doctor or cardiologist will perform the following tests. Electrocardiogram (ECG). An ECG test has a machine that records your heart's electrical currents. Sometimes your doctor will have you do this while exercising to see your heart's rhythm when your heartbeat is elevated.