ICD-10-PCS Code For Kidneys, Ureters And Bladder: Procedure Code Group Overview

The International Classification of Diseases, Tenth Revision, Procedure Coding System (ICD-10-PCS) code group CT23 includes procedures performed to capture three-dimensional tomographic nuclear medicine images of the kidneys, ureters, and bladder. These ICD-10-PCS codes are used for inpatient documentation when a tomographic nuclear medicine study involving the introduction of radioactive materials into the body is performed to evaluate urinary system structure or function. Accurate coding within the ICD-10-PCS CT23 group is essential for proper inpatient reimbursement, as it captures the specific tomographic nuclear medicine procedure performed and supports clinical documentation accuracy.

Customize your policy alerts

Sign up for ICD-10-PCS Code For Kidneys, Ureters And Bladder: Procedure Code Group Overview policy alerts

Get alerted when relevant policies change without checking for updates manually.

Monitor payer policy activity

Receive email alerts as soon as relevant payer policies are published or updated.

Kidneys, Ureters And Bladder Tomographic Nuclear Medicine Imaging Procedure Overview

This procedure group includes tomographic nuclear medicine imaging studies of the kidneys, ureters, and bladder that capture three-dimensional images from radioactive emissions. These studies target the urinary system and use introduced radioactive materials to produce detailed functional and anatomical information. Accurate ICD-10-PCS coding ensures inpatient records reflect the specific nuclear medicine tomographic imaging performed and supports appropriate reimbursement.

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
C	Section	Nuclear Medicine
T	Body System	Urinary System
2	Operation	Tomographic (Tomo) Nuclear Medicine Imaging
3	Body Part	Kidneys, Ureters and Bladder

Explore openpayer tools

View all tools

ICD-10-PCS Code For Kidneys, Ureters And Bladder: Procedure Code Group Overview

Customize your policy alerts

Sign up for ICD-10-PCS Code For Kidneys, Ureters And Bladder: Procedure Code Group Overview policy alerts

Get alerted when relevant policies change without checking for updates manually.

Monitor payer policy activity

Receive email alerts as soon as relevant payer policies are published or updated.

Kidneys, Ureters And Bladder Tomographic Nuclear Medicine Imaging Procedure Overview

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
C	Section	Nuclear Medicine
T	Body System	Urinary System
2	Operation	Tomographic (Tomo) Nuclear Medicine Imaging
3	Body Part	Kidneys, Ureters and Bladder

When to Use

Use a code from this group when a patient undergoes a tomographic nuclear medicine imaging study of the kidneys, ureters, or bladder involving the introduction of radioactive tracers. Select the code when the inpatient procedure specifically captures three-dimensional images developed from the detection of radioactive emissions for diagnostic or functional assessment.

ICD-10-PCS Codes

2 rows

ICD-10-PCS Code	Description
CT231ZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Kidneys, Ureters and Bladder using Technetium 99m (Tc-99m)
CT23YZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Kidneys, Ureters and Bladder using Other Radionuclide

Typical Clinical Scenarios

An elderly patient is admitted with acute flank pain and suspected obstructive uropathy after non-contrast CT is inconclusive; renal function is borderline and clinicians need a functional assessment of split renal perfusion and drainage to guide urgent management. A tomographic nuclear medicine renal scan with a radiotracer is performed to evaluate differential renal function and detect obstruction. Typical codes: CT231ZZ, CT23YZZ
A middle-aged patient with recurrent urinary tract infections and chronic hematuria is scheduled for inpatient evaluation to characterize renal cortical scarring and quantify renal function prior to possible surgical intervention. A planned tomographic nuclear medicine study using a technetium-based tracer provides three-dimensional functional imaging of the kidneys, ureters, and bladder to inform treatment decisions. Typical codes: CT231ZZ
A hospitalized patient with prior partial nephrectomy presents with new-onset decline in contralateral kidney function and concern for compensatory changes versus recurrent lesion; clinicians require a tomographic functional study to map regional renal function and assess urinary drainage as part of inpatient workup. Tomographic nuclear medicine imaging with an appropriate radionuclide tracer is obtained to evaluate the post-surgical urinary system function. Typical codes: CT23YZZ, CT231ZZ

Related Codes

CT2Y-URINARY-SYSTEM-TOMOGRAPHIC-IMAGING

ICD-10-PCS Code For Urinary System: 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.

Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.

Explore openpayer tools

View all tools

When to Use

ICD-10-PCS Codes

2 rows

ICD-10-PCS Code	Description
CT231ZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Kidneys, Ureters and Bladder using Technetium 99m (Tc-99m)
CT23YZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Kidneys, Ureters and Bladder using Other Radionuclide

Typical Clinical Scenarios

An elderly patient is admitted with acute flank pain and suspected obstructive uropathy after non-contrast CT is inconclusive; renal function is borderline and clinicians need a functional assessment of split renal perfusion and drainage to guide urgent management. A tomographic nuclear medicine renal scan with a radiotracer is performed to evaluate differential renal function and detect obstruction. Typical codes: CT231ZZ, CT23YZZ
A middle-aged patient with recurrent urinary tract infections and chronic hematuria is scheduled for inpatient evaluation to characterize renal cortical scarring and quantify renal function prior to possible surgical intervention. A planned tomographic nuclear medicine study using a technetium-based tracer provides three-dimensional functional imaging of the kidneys, ureters, and bladder to inform treatment decisions. Typical codes: CT231ZZ
A hospitalized patient with prior partial nephrectomy presents with new-onset decline in contralateral kidney function and concern for compensatory changes versus recurrent lesion; clinicians require a tomographic functional study to map regional renal function and assess urinary drainage as part of inpatient workup. Tomographic nuclear medicine imaging with an appropriate radionuclide tracer is obtained to evaluate the post-surgical urinary system function. Typical codes: CT23YZZ, CT231ZZ

Related Codes

CT2Y-URINARY-SYSTEM-TOMOGRAPHIC-IMAGING

ICD-10-PCS Code For Urinary System: 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 Kidneys, Ureters And Bladder: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Kidneys, Ureters And Bladder: Procedure Code Group Overview policy alerts

Kidneys, Ureters And Bladder Tomographic Nuclear Medicine Imaging Procedure Overview

Code Attributes

ICD-10-PCS Code For Kidneys, Ureters And Bladder: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Kidneys, Ureters And Bladder: Procedure Code Group Overview policy alerts

Kidneys, Ureters And Bladder Tomographic Nuclear Medicine 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 CT23 group?

What is the primary purpose of CT23 tomographic nuclear medicine procedures?

In which ICD-10-PCS section and body system is CT23 classified?

How does accurate coding within CT23 affect inpatient documentation and reimbursement?

When should `CT231ZZ` versus `CT23YZZ` be selected?

References

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

Which procedures are included in the ICD-10-PCS CT23 group?

What is the primary purpose of CT23 tomographic nuclear medicine procedures?

In which ICD-10-PCS section and body system is CT23 classified?

How does accurate coding within CT23 affect inpatient documentation and reimbursement?

When should `CT231ZZ` versus `CT23YZZ` be selected?

References