ICD-10-PCS Code For Central Nervous System: Procedure Code Group Overview

The International Classification of Diseases, Tenth Revision, Procedure Coding System (ICD-10-PCS) code group C02Y includes procedures performed to image functional activity in the central nervous system. These ICD-10-PCS codes are used for inpatient documentation when tomographic nuclear medicine imaging with introduction of a radionuclide is performed for three-dimensional display of images of the central nervous system. Accurate coding within the ICD-10-PCS C02Y group is essential for proper inpatient reimbursement, as it captures the specific diagnostic imaging performed and supports clinical documentation accuracy.

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Central Nervous System Tomographic Nuclear Medicine Imaging Procedure Overview

Procedures in this group involve tomographic nuclear medicine imaging of the central nervous system, where a radionuclide is introduced and three-dimensional images are created from captured radioactive emissions. These procedures target the central nervous system to visualize functional activity and pathology. Accurate ICD-10-PCS coding of these imaging procedures ensures the inpatient record reflects the specific diagnostic imaging performed and supports correct reimbursement and clinical documentation.

Code Attributes

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

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ICD-10-PCS Code For Central Nervous System: Procedure Code Group Overview

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Central Nervous System Tomographic Nuclear Medicine Imaging Procedure Overview

Code Attributes

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

When to Use

Use a code from this group when a radionuclide is introduced and tomographic nuclear medicine techniques are used to obtain three-dimensional functional images of the central nervous system. These codes apply to inpatient settings where the imaging procedure and introduction of radioactive material are documented as performed.

ICD-10-PCS Codes

1 rows

ICD-10-PCS Code	Description
C02YYZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Central Nervous System using Other Radionuclide

Typical Clinical Scenarios

An elderly patient is admitted after acute onset of confusion, fluctuating levels of consciousness, and new focal neurologic deficits raising concern for metabolic versus structural causes. Treating clinicians order tomographic nuclear medicine imaging of the central nervous system with introduction of an alternative radionuclide to assess regional cerebral perfusion and functional activity to help differentiate ischemic stroke, seizure-related changes, or diffuse encephalopathy. The inpatient study is performed to guide urgent diagnostic and management decisions. Typical codes: C02YYZZ
A middle-aged patient with progressive parkinsonian symptoms and uncertain diagnosis is admitted for expedited evaluation because outpatient testing was inconclusive. Physicians perform a tomographic nuclear medicine study using another radionuclide to visualize dopaminergic function in the central nervous system and support diagnostic differentiation between Parkinson disease and atypical parkinsonian syndromes. The inpatient imaging informs further treatment planning and disposition. Typical codes: C02YYZZ
A hospitalized patient with known brain tumor develops new cognitive decline and suspected tumor recurrence versus radiation necrosis; cross-sectional structural imaging is inconclusive. Clinicians obtain tomographic nuclear medicine imaging with an alternative radionuclide introduced to evaluate metabolic activity within the central nervous system and help distinguish recurrent viable tumor from post-treatment changes. The result guides decisions about additional therapy or supportive care. Typical codes: C02YYZZ

Related Codes

C020-BRAIN-TOMOGRAPHIC-IMAGING

ICD-10-PCS Code For Brain: Procedure Code Group Overview

C025-CEREBROSPINAL-FLUID-TOMOGRAPHIC

ICD-10-PCS Code For Cerebrospinal Fluid: 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
C02YYZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Central Nervous System using Other Radionuclide

Typical Clinical Scenarios

An elderly patient is admitted after acute onset of confusion, fluctuating levels of consciousness, and new focal neurologic deficits raising concern for metabolic versus structural causes. Treating clinicians order tomographic nuclear medicine imaging of the central nervous system with introduction of an alternative radionuclide to assess regional cerebral perfusion and functional activity to help differentiate ischemic stroke, seizure-related changes, or diffuse encephalopathy. The inpatient study is performed to guide urgent diagnostic and management decisions. Typical codes: C02YYZZ
A middle-aged patient with progressive parkinsonian symptoms and uncertain diagnosis is admitted for expedited evaluation because outpatient testing was inconclusive. Physicians perform a tomographic nuclear medicine study using another radionuclide to visualize dopaminergic function in the central nervous system and support diagnostic differentiation between Parkinson disease and atypical parkinsonian syndromes. The inpatient imaging informs further treatment planning and disposition. Typical codes: C02YYZZ
A hospitalized patient with known brain tumor develops new cognitive decline and suspected tumor recurrence versus radiation necrosis; cross-sectional structural imaging is inconclusive. Clinicians obtain tomographic nuclear medicine imaging with an alternative radionuclide introduced to evaluate metabolic activity within the central nervous system and help distinguish recurrent viable tumor from post-treatment changes. The result guides decisions about additional therapy or supportive care. Typical codes: C02YYZZ

Related Codes

C020-BRAIN-TOMOGRAPHIC-IMAGING

ICD-10-PCS Code For Brain: Procedure Code Group Overview

C025-CEREBROSPINAL-FLUID-TOMOGRAPHIC

ICD-10-PCS Code For Cerebrospinal Fluid: 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.

ICD-10-PCS Code For Central Nervous System: Procedure Code Group Overview

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

Central Nervous System Tomographic Nuclear Medicine Imaging Procedure Overview

Code Attributes

ICD-10-PCS Code For Central Nervous System: Procedure Code Group Overview

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

Central Nervous System Tomographic Nuclear Medicine Imaging Procedure Overview

Code Attributes

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

What does the ICD-10-PCS code group C02Y represent?

Which section and body system are assigned to these procedures in ICD-10-PCS?

How is the specific code in this group formatted and what does it indicate?

Why is accurate coding within the ICD-10-PCS C02Y group important for inpatient documentation?

Are there related DRGs listed for the C02Y code group?

References

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

What does the ICD-10-PCS code group C02Y represent?

Which section and body system are assigned to these procedures in ICD-10-PCS?

How is the specific code in this group formatted and what does it indicate?

Why is accurate coding within the ICD-10-PCS C02Y group important for inpatient documentation?

Are there related DRGs listed for the C02Y code group?

References