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 C03Y includes procedures performed to image metabolic and functional activity in the central nervous system. These ICD-10-PCS codes are used for inpatient documentation when positron emission tomographic imaging with introduction of radioactive materials is performed to evaluate central nervous system structure or function. Accurate coding within the ICD-10-PCS C03Y group is essential for proper inpatient reimbursement, as it captures the diagnostic procedure performed and supports clinical documentation accuracy.

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Central Nervous System Positron Emission Tomographic Imaging Procedure Overview

This procedure group includes positron emission tomographic imaging procedures that introduce radioactive materials to produce three-dimensional images of the central nervous system. These procedures target the central nervous system and capture metabolic and functional data using radionuclide emissions. Accurate ICD-10-PCS coding ensures inpatient records reflect the diagnostic imaging performed and supports correct case mix assignment and payment.

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
C	Section	Nuclear Medicine
0	Body System	Central Nervous System
3	Operation	Positron Emission Tomographic (PET) 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 Positron Emission Tomographic Imaging Procedure Overview

Code Attributes

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

When to Use

Use a code from this group when radioactive materials are introduced for positron emission tomographic imaging of the central nervous system during an inpatient encounter. These codes apply when PET imaging is performed to assess central nervous system metabolic or functional abnormalities.

ICD-10-PCS Codes

1 rows

ICD-10-PCS Code	Description
C03YYZZ	Positron Emission Tomographic (PET) Imaging of Central Nervous System using Other Radionuclide

Typical Clinical Scenarios

A 68-year-old patient is admitted from the emergency department with new-onset focal seizures and rapidly progressive cognitive decline over several weeks. To evaluate for an underlying metabolic or functional cerebral abnormality such as focal cortical dysplasia or an occult neoplasm contributing to seizures, inpatient positron emission tomographic imaging is performed after administration of a radionuclide to assess regional brain metabolism. Typical codes: C03YYZZ
A 55-year-old patient with a history of treated glioma is admitted electively for comprehensive functional assessment prior to consideration of further therapy. Inpatient PET imaging with intravenous radiotracer is obtained to characterize residual tumor metabolic activity versus treatment-related changes and to guide multidisciplinary planning. Typical codes: C03YYZZ
A 72-year-old patient with progressive Parkinsonism admitted for evaluation of worsening mobility and to rule out atypical parkinsonian syndromes. Because clinical features are inconclusive, inpatient PET imaging with a radionuclide is performed to assess patterns of central nervous system metabolic activity to aid differential diagnosis and management decisions. Typical codes: C03YYZZ

ICD-10-PCS Code For Brain: 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
C03YYZZ	Positron Emission Tomographic (PET) Imaging of Central Nervous System using Other Radionuclide

Typical Clinical Scenarios

A 68-year-old patient is admitted from the emergency department with new-onset focal seizures and rapidly progressive cognitive decline over several weeks. To evaluate for an underlying metabolic or functional cerebral abnormality such as focal cortical dysplasia or an occult neoplasm contributing to seizures, inpatient positron emission tomographic imaging is performed after administration of a radionuclide to assess regional brain metabolism. Typical codes: C03YYZZ
A 55-year-old patient with a history of treated glioma is admitted electively for comprehensive functional assessment prior to consideration of further therapy. Inpatient PET imaging with intravenous radiotracer is obtained to characterize residual tumor metabolic activity versus treatment-related changes and to guide multidisciplinary planning. Typical codes: C03YYZZ
A 72-year-old patient with progressive Parkinsonism admitted for evaluation of worsening mobility and to rule out atypical parkinsonian syndromes. Because clinical features are inconclusive, inpatient PET imaging with a radionuclide is performed to assess patterns of central nervous system metabolic activity to aid differential diagnosis and management decisions. Typical codes: C03YYZZ

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

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Central Nervous System Positron Emission Tomographic Imaging Procedure Overview

Code Attributes

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

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Central Nervous System Positron Emission Tomographic 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 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 Positron Emission Tomographic 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 Positron Emission Tomographic Imaging Procedure Overview

Code Attributes

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

Which procedures are included in the ICD-10-PCS C03Y code group?

What is the coded operation and body system for this procedure group?

How is the individual ICD-10-PCS code within this group represented?

Why is accurate coding within the ICD-10-PCS C03Y group important?

Are there related DRGs listed for C03Y procedures?

References

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

Which procedures are included in the ICD-10-PCS C03Y code group?

What is the coded operation and body system for this procedure group?

How is the individual ICD-10-PCS code within this group represented?

Why is accurate coding within the ICD-10-PCS C03Y group important?

Are there related DRGs listed for C03Y procedures?

References