The 2nd character defines the particular body system or general physiological system or anatomical region involved.
Osteopathic procedure codes have a first character value of “7”. The body system character contains the value anatomical regions. There is only one root operation in the osteopathic section.
The 4th character specifies the body region on which the osteopathic manipulation is performed. The approach for osteopathic manipulations is always External. The sixth character specifies the method by which the manipulation is accomplished. The seventh character is not specified in the osteopathic section and always has the value No Qualifier.