Perhaps recognizing the massive undertaking for coding and HIM departments in 2015 with the implementation of ICD-10, the latest CPT® update includes a relatively small 367 changes for 2016.
Per CPT1, modifier -52 is used when a service or procedure is partially reduced or eliminated at the provider's discretion. Such a situation is identified by using the service's usual HCPCS/CPT code and adding modifier -52, signifying that the service is reduced.
Some interesting tidbits of information can be gleaned from the most recent release of the AHA Coding Clinic for ICD-10-CM/PCS to help coders as they work in the new code set.
