ICD-10-PCS Code For Respiratory System: Procedure Code Group Overview

The International Classification of Diseases, Tenth Revision, Procedure Coding System (ICD-10-PCS) code group CB2Y includes procedures performed to obtain three-dimensional diagnostic images of the respiratory system using introduced radioactive materials. These ICD-10-PCS codes are used for inpatient documentation when tomographic nuclear medicine imaging of the respiratory system is performed with radionuclide administration to evaluate pulmonary anatomy or function. Accurate coding within the ICD-10-PCS CB2Y group is essential for proper inpatient reimbursement, as it captures the specific imaging procedure performed and supports clinical documentation accuracy.

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Respiratory System Tomographic (Tomo) Nuclear Medicine Imaging Procedure Overview

Procedures in this group involve tomographic nuclear medicine imaging of the respiratory system, using introduced radioactive materials to produce three-dimensional images from captured radioactive emissions. The procedures target the respiratory system and are performed by administering a radionuclide and acquiring tomographic image data for diagnostic evaluation. Accurate ICD-10-PCS coding of these procedures ensures the inpatient record reflects the imaging performed and supports appropriate reimbursement and clinical documentation integrity.

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
C	Section	Nuclear Medicine
B	Body System	Respiratory System
2	Operation	Tomographic (Tomo) Nuclear Medicine Imaging
Y	Body Part	Respiratory System

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ICD-10-PCS Code For Respiratory System: Procedure Code Group Overview

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Respiratory System Tomographic (Tomo) Nuclear Medicine Imaging Procedure Overview

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
C	Section	Nuclear Medicine
B	Body System	Respiratory System
2	Operation	Tomographic (Tomo) Nuclear Medicine Imaging
Y	Body Part	Respiratory System

When to Use

Use a code from this group when a patient undergoes tomographic nuclear medicine imaging of the respiratory system with introduction of a radionuclide for diagnosis or functional assessment. Do not use these codes for planar nuclear medicine respiratory studies or non-nuclear tomographic imaging modalities.

ICD-10-PCS Codes

1 rows

ICD-10-PCS Code	Description
CB2YYZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Respiratory System using Other Radionuclide

Typical Clinical Scenarios

An elderly inpatient with suspected pulmonary embolism who is hemodynamically stable but has contraindications to contrast CT (severe renal impairment or contrast allergy) is admitted for evaluation of pulmonary perfusion. Tomographic nuclear medicine imaging of the respiratory system is performed after intravenous administration of a radionuclide to obtain three-dimensional perfusion images and assess for segmental perfusion defects. Typical codes: CB2YYZZ
A hospitalized patient with complex chronic lung disease (eg, COPD with unexplained hypoxemia) is scheduled for a diagnostic workup to evaluate regional ventilation–perfusion relationships prior to consideration of advanced therapies; tomographic nuclear medicine imaging is ordered to provide detailed 3D functional assessment of the respiratory system. The study uses an introduced radionuclide to generate tomographic images that help guide clinical decision-making about treatment options and oxygenation strategies. Typical codes: CB2YYZZ
An inpatient who developed acute postoperative respiratory deterioration after thoracic surgery is evaluated to distinguish lobar collapse from ongoing perfusion abnormality; tomographic nuclear medicine imaging of the respiratory system with radionuclide administration is performed to obtain three-dimensional images of pulmonary ventilation and perfusion for rapid diagnostic clarification. The results assist the clinical team in determining whether interventions such as bronchoscopy or targeted therapies are needed. Typical codes: CB2YYZZ

ICD-10-PCS Code For Lungs And Bronchi: Procedure Code Group Overview

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

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When to Use

ICD-10-PCS Codes

1 rows

ICD-10-PCS Code	Description
CB2YYZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Respiratory System using Other Radionuclide

Typical Clinical Scenarios

An elderly inpatient with suspected pulmonary embolism who is hemodynamically stable but has contraindications to contrast CT (severe renal impairment or contrast allergy) is admitted for evaluation of pulmonary perfusion. Tomographic nuclear medicine imaging of the respiratory system is performed after intravenous administration of a radionuclide to obtain three-dimensional perfusion images and assess for segmental perfusion defects. Typical codes: CB2YYZZ
A hospitalized patient with complex chronic lung disease (eg, COPD with unexplained hypoxemia) is scheduled for a diagnostic workup to evaluate regional ventilation–perfusion relationships prior to consideration of advanced therapies; tomographic nuclear medicine imaging is ordered to provide detailed 3D functional assessment of the respiratory system. The study uses an introduced radionuclide to generate tomographic images that help guide clinical decision-making about treatment options and oxygenation strategies. Typical codes: CB2YYZZ
An inpatient who developed acute postoperative respiratory deterioration after thoracic surgery is evaluated to distinguish lobar collapse from ongoing perfusion abnormality; tomographic nuclear medicine imaging of the respiratory system with radionuclide administration is performed to obtain three-dimensional images of pulmonary ventilation and perfusion for rapid diagnostic clarification. The results assist the clinical team in determining whether interventions such as bronchoscopy or targeted therapies are needed. Typical codes: CB2YYZZ

ICD-10-PCS Code For Lungs And Bronchi: Procedure Code Group Overview

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

Published by

Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

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ICD-10-PCS Code For Respiratory System: Procedure Code Group Overview

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Respiratory System Tomographic (Tomo) Nuclear Medicine Imaging Procedure Overview

Code Attributes

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ICD-10-PCS Code For Respiratory System: Procedure Code Group Overview

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Respiratory System Tomographic (Tomo) Nuclear Medicine Imaging Procedure Overview

Code Attributes

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

References

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

References

ICD-10-PCS Code For Respiratory System: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Respiratory System: Procedure Code Group Overview policy alerts

Respiratory System Tomographic (Tomo) Nuclear Medicine Imaging Procedure Overview

Code Attributes

ICD-10-PCS Code For Respiratory System: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Respiratory System: Procedure Code Group Overview policy alerts

Respiratory System Tomographic (Tomo) Nuclear Medicine Imaging Procedure Overview

Code Attributes

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

What procedures are included in the CB2Y ICD-10-PCS code group?

What is the primary use of `CB2YYZZ` within inpatient records?

Which ICD-10-PCS section and operation describe these procedures?

Why is accurate coding of CB2Y important for inpatient reimbursement?

Does the content provide treatment recommendations or external imaging details?

References

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

What procedures are included in the CB2Y ICD-10-PCS code group?

What is the primary use of `CB2YYZZ` within inpatient records?

Which ICD-10-PCS section and operation describe these procedures?

Why is accurate coding of CB2Y important for inpatient reimbursement?

Does the content provide treatment recommendations or external imaging details?

References