Understanding the appropriate procedure and diagnosis codes for a particular study question is an important part of analyzing Medicare data. These codes are very specific and can change from year to year as new codes are added and others are discontinued.
There is no wear-out factor in the coil itself other than thermal cycling and the damage it may cause. Boots and wires do age, resulting in reduced insulation value over time. The key to correct ignition system diagnosis is to understand the details of how the system you are working on really functions. PAGE:
When you turn the key in an attempt to fire off your engine, the ignition ignitor will have to produce the signal to make the ignition coil work. The ignition ignitor on your vehicle is designed to last the lifespan of the vehicle. In some cases, this will not happen due to the wear and tear that this part can have over time. Usually, the ignition ignitor will not be checked as part of routine maintenance.