Respiratory System (CB) ICD-10-PCS
The CB body system covers Nuclear Medicine procedures on respiratory system, with 16 ICD-10-PCS codes across 3 root operations, 13 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 · 16 codes
| Chars 1–3 | Root Operation | Codes | Billable |
|---|---|---|---|
| CB1 | Planar Nuclear Medicine ImagingIntroduction of radioactive materials into the body for single plane display of images developed from the capture of radioactive emissions | 7 | 6 |
| CB2 | Tomographic (Tomo) Nuclear Medicine ImagingIntroduction of radioactive materials into the body for three dimensional display of images developed from the capture of radioactive emissions | 5 | 4 |
| CB3 | Positron Emission Tomographic (PET) ImagingIntroduction of radioactive materials into the body for three dimensional display of images developed from the simultaneous capture, 180 degrees apart, of radioactive emissions | 4 | 3 |
The info icon shows the official root operation definition and previews the codes in that range.
About the CB Body System
These nuclear medicine codes cover imaging of the lungs and bronchi or the respiratory system. The procedures introduce radioactive material into the body and create images from its emissions.
Planar imaging produces a single-plane image. Tomographic imaging produces images with depth. Positron emission tomographic (PET) imaging also produces images with depth, using emissions captured simultaneously from opposite directions. The body part character distinguishes Lungs and Bronchi from Respiratory System.
Questions About This Page
How many codes are in the CB body system?
The CB body system contains 16 ICD-10-PCS codes in FY 2027, organized into 3 root operations. 13 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.
