Urinary System (BT) ICD-10-PCS
The BT body system covers Imaging procedures on urinary system, with 322 ICD-10-PCS codes across 5 root operations, 312 of them billable in fiscal year 2026. 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 5 operations · 322 codes
| Chars 1–3 | Root Operation | Codes | Billable |
|---|---|---|---|
| BT0 | Plain RadiographyPlanar display of an image developed from the capture of external ionizing radiation on photographic or photoconductive plate | 90 | 88 |
| BT1 | FluoroscopySingle plane or bi-plane real time display of an image developed from the capture of external ionizing radiation on fluorescent screen. The image may also be stored by either digital or analog means | 106 | 104 |
| BT2 | Computerized Tomography (CT Scan)Computer-reformatted digital display of multiplanar images developed from the capture of multiple exposures of external ionizing radiation | 72 | 70 |
| BT3 | Magnetic Resonance Imaging (MRI)Computer reformatted digital display of multiplanar images developed from the capture of radio frequency signals emitted by nuclei in a body site excited within a magnetic field | 32 | 30 |
| BT4 | UltrasonographyReal time display of images of anatomy or flow information developed from the capture of reflected and attenuated high frequency sound waves | 22 | 20 |
The info icon shows the official root operation definition and previews the codes in that range.
About the BT Body System
The ICD-10-PCS root operation BT refers to Imaging of the Urinary System. This operation involves capturing visual representations of urinary anatomy for diagnostic purposes without physically altering the body.
Within this category, several imaging modalities are used to examine urinary structures. For example, Plain Radiography (BT0) produces planar images using external ionizing radiation captured on photographic plates. Fluoroscopy (BT1) offers real-time X-ray imaging on fluorescent screens, useful for dynamic assessments. More advanced techniques include Computerized Tomography (CT Scan) (BT2), which creates detailed multiplanar images through multiple exposures, and Magnetic Resonance Imaging (MRI) (BT3), which uses magnetic fields and radiofrequency signals to generate detailed anatomical images. Lastly, Ultrasonography (BT4) utilizes high-frequency sound waves to provide real-time images of structures and blood flow. These urinary system imaging codes allow precise documentation of the diagnostic method applied during patient evaluation.
Questions About This Page
How many codes are in the BT body system?
The BT body system contains 322 ICD-10-PCS codes in FY 2026, organized into 5 root operations. 312 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 2026 ICD-10-PCS order file and code tables, effective October 1, 2025 through September 30, 2026.
