Patient presents with symptoms suggestive of high-degree atrioventricular (AV) block.  Presenting complaints may include dizziness, syncope, presyncope, fatigue, shortness of breath, or palpitations.  On examination, the patient may exhibit bradycardia, hypotension, or signs of heart failure.  Electrocardiogram (ECG) findings demonstrate high-degree AV block, characterized by significantly prolonged PR intervals, dropped QRS complexes, or a complete dissociation between atrial and ventricular activity.  The diagnosis of high-degree AV block is confirmed based on ECG interpretation meeting established diagnostic criteria.  Differential diagnoses considered include sinus bradycardia, second-degree AV block, and other conduction system disorders.  Risk factors assessed include ischemic heart disease, cardiomyopathy, myocarditis, electrolyte imbalances, and medications such as beta-blockers, calcium channel blockers, and digoxin.  Treatment plan may include observation, temporary pacing, or permanent pacemaker implantation, depending on the severity of symptoms and hemodynamic stability.  Patient education provided on medication management, pacemaker care if applicable, and follow-up appointments.  ICD-10 code I44.2, Atrioventricular block, complete, will be utilized for billing and coding purposes.  Continued monitoring of cardiac rhythm and symptoms is warranted.