2025 ICD-10-CM code I45.4
Nonspecific intraventricular block. This condition affects the heart's electrical conduction system, specifically the ventricles.
Medical necessity for the diagnosis and management of nonspecific intraventricular block (I45.4) is established by the presence of signs, symptoms, or abnormal ECG findings suggestive of impaired cardiac conduction. Further investigation and treatment are often necessary to evaluate the underlying cause and prevent potential complications, such as complete heart block or arrhythmias.
Diagnosis and management of nonspecific intraventricular block falls under the purview of cardiologists or electrophysiologists.
- Chapter 9: Diseases of the circulatory system (I00-I99)
- I45 Other conduction disorders I45.0 Right fascicular block I45.1 Other and unspecified right bundle-branch block I45.10 Unspecified right bundle-branch block I45.19 Other right bundle-branch block I45.2 Bifascicular block I45.3 Trifascicular block I45.4 Nonspecific intraventricular block I45.5 Other specified heart block I45.6 Pre-excitation syndrome I45.8 Other specified conduction disorders I45.81 Long QT syndrome I45.89 Other specified conduction disordersI45.9 Conduction disorder, unspecified
In simple words: This code describes a problem with the electrical system in your heart. The electrical signals that tell your heart to beat aren't traveling the usual way to the lower chambers of your heart (the ventricles). This can affect how efficiently your heart pumps blood.
Nonspecific intraventricular block (also known as bundle-branch block NOS) is a disorder of the heart's electrical conduction system where the electrical impulses to the ventricles are not transmitted normally.The ventricles are responsible for pumping blood to the body.The heart has four chambers: two atria and two ventricles, each set separated by a partition. Electrical currents within the heart cause it to contract, starting in the right atrium, spreading to both atria, and then traveling to the ventricles. This electrical pathway divides into thinner cables: two for the left ventricle and one for the right. In an intraventricular block, these electrical currents don't flow normally through the ventricular cables.
Example 1: A patient presents with an abnormal electrocardiogram (ECG) showing a delayed conduction of electrical impulses within the ventricles, but the specific block cannot be classified as right bundle branch block or left bundle branch block. The diagnosis of nonspecific intraventricular block (I45.4) is made., During a routine physical, a patient is found to have an irregular heartbeat. An ECG reveals a nonspecific delay in the conduction of electrical impulses within the ventricles, leading to the diagnosis of I45.4., A patient with a history of heart disease undergoes an ECG as part of their regular check-up. The ECG reveals a previously undiagnosed nonspecific intraventricular block (I45.4).
Documentation should include a detailed interpretation of the electrocardiogram (ECG) findings indicating the presence of a nonspecific intraventricular block. The documentation should also include the patient's symptoms, related medical history, and any associated conditions.
** It is important to differentiate I45.4 from other, more specific forms of heart block. If the documentation specifies the location or type of block (e.g., right bundle branch block, left bundle branch block), a more specific code should be used.
- Specialties:Cardiology
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