Due to the large number of new and revised procedure codes, the addenda changes demonstrating the specific revisions to the code titles are not included in the explanations below. Rather a summary of the changes is provided. The FY 2017 ICD-10-PCS updates, including the complete list of FY 2017 ICD-10-PCS code titles, addenda, and a conversion table showing changes from FY 2016 are available on the Centers for Medicare & Medicaid Services (CMS) website at: https://www.cms.gov/Medicare/Coding/ICD10/2017-ICD-10-PCS-and-GEMs.html
Over 3,800 new ICD-10-PCS codes are being implemented on October 1, 2016 and about 500 codes are being revised. The high volume of new and revised codes partly reflects lifting the lengthy partial code freeze that has been in effect since 2011. Otherwise, the volume of codes is related to the exponential effect of the code table structure in ICD-10-PCS. When a single new value is added to a row within a code table, it creates multiple new codes when combined with the existing values for other characters within that row.
The majority of new and revised codes are in Section 0-Medical and Surgical. There are also a small number of changes in Sections 3-Administration, 4-Measurement and Monitoring, 6-Extracorporeal Therapies, and X-New Technology. The specific changes are described below by section. Additions are shown as underlined, deletions are shown as strikeouts in the excerpts from the ICD-10-PCS Tables below.