Types of cardiac pacemakers and NBG codes

Code	Meaning
VOO	Asynchronous ventricular pacemaker; no adaptive rate control or antitachyarrhythmia functions
VVI	Ventricular "demand" pacemaker with electrogram-waveform telemetry; no adaptive rate control or antitachyarrhythmia functions
DVI	Multiprogrammable atrioventricular-sequential pacemaker; no adaptive rate control
DDD	Multiprogrammable "physiologic" dual-chamber pacemaker; no adaptive rate control or antitachyarrhythmia functions
DDI	Multiprogrammable DDI pacemaker (with dual-chamber pacing and sensing but without atrial-synchronous ventricular pacing); no adaptive rate control or antitachycardia functions
VVIR	Adaptive-rate VVI pacemaker with escape interval controlled adaptively by one or more unspecified variables
DDDR	Programmable DDD pacemaker with escape interval controlled adaptively by one or more unspecified variables

Ventricular_and_atrial_pace.htm

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