Anatomical Regions (XW) ICD-10-PCS
The XW body system covers New Technology procedures on anatomical regions, with 203 ICD-10-PCS codes across 3 root operations, 200 of them billable in fiscal year 2027. Each root operation defines a distinct procedural objective, and the info icons show the official definition with a preview of the codes inside.
Root Operations in This Body System 3 operations · 203 codes
| Chars 1–3 | Root Operation | Codes | Billable |
|---|---|---|---|
| XW0 | IntroductionPutting in or on a therapeutic, diagnostic, nutritional, physiological or prophylactic substance except blood or blood products | 179 | 178 |
| XW1 | TransfusionPutting in blood or blood products | 22 | 21 |
| XWH | InsertionPutting in a nonbiological appliance that monitors, assists, performs, or prevents aphysiological function but does not physically take the place of a body part | 2 | 1 |
The info icon shows the official root operation definition and previews the codes in that range.
About the XW Body System
These procedures put substances in or on the body, put in blood or blood products, or insert nonbiological appliances. Sites include muscle, peripheral and central veins, the upper and lower digestive tract, joints, and bones.
Introduction covers substances other than blood or blood products, including substances used for treatment, diagnosis, or nutrition. Transfusion puts in blood or blood products. Insertion puts in a nonbiological appliance that supports a body function without replacing a body part.
FY 2027 changes: The FY 2027 ICD-10-PCS update, effective October 1, 2026, added 14 codes, revised 2 code titles and deleted 18 codes in this body system. Tables with changes: XW0 Introduction and XW1 Transfusion.
Questions About This Page
How many codes are in the XW body system?
The XW body system contains 203 ICD-10-PCS codes in FY 2027, organized into 3 root operations. 200 of them are billable on inpatient claims.
What is a root operation?
The root operation is the third character of every ICD-10-PCS code and names the objective of the procedure. Drainage takes fluid out, Excision cuts out a portion of a body part, and Resection removes all of one. Picking the right root operation is the central skill of PCS coding, so each one above carries its official CMS definition.
Related References
Source: CMS FY 2027 ICD-10-PCS order file and code tables, effective October 1, 2026 through September 30, 2027.
