AHA Coding Clinic® for ICD-9 - 1987 September - October
His Bundle Electrocardiogram, 37.29
His bundle electrocardiogram, 37.29, is an intracardiac recording of the heart's electrical activity. The technique involves the use of a transvenous electrode catheter (special catheter with three separate electrodes) introduced via the femoral vein and positioned in the right ventricle near the tricuspid valve. The characteristic atrial, His bundle, and ventricular depolarizations are recorded and intervals timed. The His bundle is part of the heart's conduction system. Transmission of cardiac impulse is conducted sequentially through specialized atrial conducting tracts, atrioventricular node, the bundle of His, the bundle branches, the Purkinje fibers, and finally the ventricular muscle. The conduction...
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Article Overview
This premium article provides a general overview of His bundle electrocardiography, including how the recording is obtained, where the catheter is positioned, and what parts of the cardiac conduction system are assessed. It is aimed at readers who want background on the procedure and its clinical context in electrophysiology, especially when evaluating atrioventricular conduction concerns. The article stays at a conceptual level and does not function as a coding decision guide.
Why This Topic Matters
Understanding this procedure helps coders, clinicians, and revenue cycle staff distinguish a specialized intracardiac electrophysiology study from other cardiac diagnostic tests and recognize why it may be used in conduction-system evaluation.
What You Will Learn
- What a His bundle electrocardiogram is in broad terms
- How the recording is performed at a high level
- What parts of the cardiac conduction system are involved
- Why the study may be used in conduction-system assessment
Who Should Read This
- Medical coders
- Cardiology and electrophysiology staff
- Clinical documentation specialists
- Revenue cycle professionals
- Health information management professionals
Codes Discussed
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