If taking out a device & putting a similar device is performed with an external approach the procedure is coded to the root operation Change & otherwise the procedure for taking out the device is coded to the root operation Removal & the procedure for putting in a new device is coded to the root operation.
A procedure to remove a device is coded to removal if it is not an integral part of another root operation & regardless of the approach or the original root operation by which the device was put in.
In the Root Operation Removal general body part values are used when the specific body part is not listed in the table.