what is the icd 10 code for mobitz ii

by Dr. Linwood Lehner 6 min read

426.12 - Mobitz (type) II atrioventricular block.

Not Valid for Submission

426.12 is a legacy non-billable code used to specify a medical diagnosis of mobitz (type) ii atrioventricular block. This code was replaced on September 30, 2015 by its ICD-10 equivalent.

Convert 426.12 to ICD-10

The following crosswalk between ICD-9 to ICD-10 is based based on the General Equivalence Mappings (GEMS) information:

Information for Medical Professionals

References found for the code 426.12 in the Index of Diseases and Injuries:

Information for Patients

An arrhythmia is a problem with the rate or rhythm of your heartbeat. It means that your heart beats too quickly, too slowly, or with an irregular pattern. When the heart beats faster than normal, it is called tachycardia. When the heart beats too slowly, it is called bradycardia.

ICD-9 Footnotes

General Equivalence Map Definitions The ICD-9 and ICD-10 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

What is Mobitz type 1?

Mobitz type I is a type of 2 nd degree AV block, which refers to an irregular cardiac rhythm (arrhythmia), that reflects a conduction block in the electrical conduction system of the heart. The heart is a muscular organ composed of four chambers: two upper chambers—the right and left atria—, and two lower chambers— the right and left ventricles.

What causes Mobitz block?

Other causes of Mobitz type I block include a heart attack, disorders affecting the heart muscle walls (cardiomyopathies), inflammation of the heart muscle ( myocarditis ), infection of the inner layer of the heart ( endocarditis ), inherited heart defects, infiltrative and autoimmune disorders, and cardiac surgical procedures.

Can Mobitz block cause dizziness?

Some individuals may occasionally feel light-headedness, dizziness, or fatigue when exercising. More rarely, Mobitz type I block may lead to a sudden and temporary loss of consciousness, also known as a syncope, caused by a brief decrease in the oxygen supply to the brain.

Is Mobitz a heart block?

Yes, Mobitz type I is also known as Wenckebach block or 2 nd degree heart block type I. All three names refer to the same ECG rhythm and can be used interchangeably.

Is Mobitz II a good rhythm?

Mobitz I is a benign rhythm that generally reflects a block at the AV node, and typically results in a good prognosis. On the other hand, Mobitz II reflects a block after the AV node, either at the bundle of His or its branches, and often results in a poorer prognosis, as it has a higher risk of progressing to a 3 rd degree AV block.

Does Mobitz I have a sinus node?

In Mobitz I, the sinus node is healthy and fires right on time, so the P waves come at regular intervals. However, atrial impulses travelling through the AV node take longer and longer to conduct at each subsequent impulse, causing a progressive prolongation of the PR interval, until one impulse is completely blocked.

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