Musculoskeletal System (CP) ICD-10-PCS
The CP body system covers Nuclear Medicine procedures on musculoskeletal system, with 126 ICD-10-PCS codes across 3 root operations, 120 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 3 operations · 126 codes
| Chars 1–3 | Root Operation | Codes | Billable |
|---|---|---|---|
| CP1 | Planar Nuclear Medicine ImagingIntroduction of radioactive materials into the body for single plane display of images developed from the capture of radioactive emissions | 52 | 50 |
| CP2 | Tomographic (Tomo) Nuclear Medicine ImagingIntroduction of radioactive materials into the body for three dimensional display of images developed from the capture of radioactive emissions | 64 | 62 |
| CP5 | Nonimaging Nuclear Medicine ProbeIntroduction of radioactive materials into the body for the study of distribution and fate of certain substances by the detection of radioactive emissions; or, alternatively, measurement of absorption of radioactive emissions from an external source | 10 | 8 |
The info icon shows the official root operation definition and previews the codes in that range.
About the CP Body System
The ICD-10-PCS root operation CP in the Nuclear Medicine section refers to procedures involving the introduction of radioactive materials into the body to study the Musculoskeletal System. This operation focuses on capturing radioactive emissions to create diagnostic images or measurements.
Specifically, Musculoskeletal Nuclear Medicine CP procedures include several imaging techniques. Planar Nuclear Medicine Imaging (code CP1) produces single-plane images based on radioactive emissions. More advanced is Tomographic Nuclear Medicine Imaging (code CP2), which generates three-dimensional images for detailed visualization. Alternatively, the Nonimaging Nuclear Medicine Probe (code CP5) involves investigating the distribution or behavior of substances within the musculoskeletal system through detection or measurement of radioactive emissions, without creating images. These distinct applications allow precise diagnostic evaluation of musculoskeletal conditions using nuclear medicine techniques.
Questions About This Page
How many codes are in the CP body system?
The CP body system contains 126 ICD-10-PCS codes in FY 2026, organized into 3 root operations. 120 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.
