CB3 Positron Emission Tomographic (PET) Imaging - Respiratory System ICD-10-PCS
The CB3 code range contains 4 ICD-10-PCS codes for Positron Emission Tomographic (PET) Imaging procedures on the respiratory system. 3 of the codes are billable and valid for inpatient claim submission in fiscal year 2026.
Root Operation Definition
Positron Emission Tomographic (PET) Imaging: Introduction of radioactive materials into the body for three dimensional display of images developed from the simultaneous capture, 180 degrees apart, of radioactive emissions.
Codes in the CB3 Range 4 codes · 3 billable
- CB3 Nuclear Medicine, Respiratory System, Positron Emission Tomographic (PET) ImagingNon-billable header
- CB32KZZ Positron Emission Tomographic (PET) Imaging of Lungs and Bronchi using Fluorine 18 (F-18)
- CB32YZZ Positron Emission Tomographic (PET) Imaging of Lungs and Bronchi using Other Radionuclide
- CB3YYZZ Positron Emission Tomographic (PET) Imaging of Respiratory System using Other Radionuclide
About the CB3 Code Range
The ICD-10-PCS root operation Positron Emission Tomographic (PET) Imaging (CB3) refers to a specialized nuclear medicine procedure that creates detailed images of the body's internal structures by detecting positron emissions. This operation is essential for evaluating physiological function and metabolism within targeted body systems.
Within the Nuclear Medicine classification, CB3 PET Imaging is specifically applied to the Respiratory System, including the lungs and bronchi. The codes reflect different radionuclides used during imaging, such as Fluorine 18 (F-18) in CB32KZZ and other radionuclides in CB32YZZ and CB3YYZZ. These distinctions allow providers to accurately document the type of PET imaging performed, ensuring precise clinical records and facilitating appropriate diagnostic and treatment planning based on the metabolic activity observed in respiratory tissues.
Questions About This Page
How many billable codes are in the CB3 range?
Of the 4 codes in this range, 3 are billable and valid for inpatient claim submission from October 1, 2025 through September 30, 2026. Table header codes group them but cannot be reported on claims.
What does the CB3 range classify?
The range classifies Positron Emission Tomographic (PET) Imaging procedures, introduction of radioactive materials into the body for three dimensional display of images developed from the simultaneous capture, 180 degrees apart, of radioactive emissions, performed on the respiratory system. Each code adds the body part, approach, device, and qualifier in characters four through seven, and links to its own reference page.
Related References
Source: CMS FY 2026 ICD-10-PCS order file and code tables, effective October 1, 2025 through September 30, 2026.
