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:
In this coil, the electricity has a voltage high enough that it creates a spark in the spark plug, and this ignites the fuel and air combination. If this process does not operate the way it is supposed to, ignition coil symptoms appear. There are some ways to know when the ignition coil is going bad.