ICD-10-PCS Code For Skin, Subcutaneous Tissue And Breast: Procedure Code Group Overview

The International Classification of Diseases, Tenth Revision, Procedure Coding System (ICD-10-PCS) code group CH2Y includes procedures performed to image functional or metabolic activity using tomographic nuclear medicine techniques in the skin, subcutaneous tissue, and breast. These ICD-10-PCS codes are used for inpatient documentation when three-dimensional nuclear medicine imaging is performed using administered radionuclides to evaluate lesions, disease extent, or treatment response in the skin, subcutaneous tissue, or breast. Accurate coding within the ICD-10-PCS CH2Y group is essential for proper inpatient reimbursement, as it captures the specific imaging procedure performed and supports clinical documentation accuracy.

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Skin, Subcutaneous Tissue And Breast Tomographic Nuclear Medicine Imaging Procedure Overview

Procedures in this group involve tomographic nuclear medicine imaging of the skin, subcutaneous tissue, and breast using injected or administered radionuclides to produce three-dimensional images from captured radioactive emissions. The procedures target the skin, subcutaneous tissue, and breast body system and use specialized gamma or single-photon emission tomography techniques to localize functional or metabolic activity. Accurate ICD-10-PCS coding ensures the inpatient record reflects the specific imaging modality and anatomical focus, which affects clinical documentation and hospital reimbursement.

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
C	Section	Nuclear Medicine
H	Body System	Skin, Subcutaneous Tissue and Breast
2	Operation	Tomographic (Tomo) Nuclear Medicine Imaging
Y	Body Part	Skin, Subcutaneous Tissue and Breast

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ICD-10-PCS Code For Skin, Subcutaneous Tissue And Breast: Procedure Code Group Overview

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Skin, Subcutaneous Tissue And Breast Tomographic Nuclear Medicine Imaging Procedure Overview

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
C	Section	Nuclear Medicine
H	Body System	Skin, Subcutaneous Tissue and Breast
2	Operation	Tomographic (Tomo) Nuclear Medicine Imaging
Y	Body Part	Skin, Subcutaneous Tissue and Breast

When to Use

Use a code from this group when inpatient care includes tomographic nuclear medicine imaging performed with radionuclide administration to evaluate functional activity or localize pathology in the skin, subcutaneous tissue, or breast. Select the specific code when documentation confirms the tomographic technique and the anatomical site targeted by the imaging study.

ICD-10-PCS Codes

1 rows

ICD-10-PCS Code	Description
CH2YYZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Skin, Subcutaneous Tissue and Breast using Other Radionuclide

Typical Clinical Scenarios

An elderly woman admitted for evaluation of a newly palpable breast mass with indeterminate findings on mammography and ultrasound; clinicians request three-dimensional nuclear medicine imaging after administration of a radiotracer to assess metabolic activity and better localize the lesion within breast tissue. The inpatient tomographic study aids surgical planning by delineating functional extent of the suspicious area when conventional imaging is inconclusive. Results are used to guide biopsy or operative approach. Typical codes: CH2YYZZ
A middle-aged patient presents to the emergency department with rapidly enlarging, painful subcutaneous nodules and concern for multifocal infection versus inflammatory neoplasm; after admission, three-dimensional nuclear medicine imaging is performed following radionuclide administration to evaluate the distribution and activity of lesions in the skin and subcutaneous tissue. The tomographic study helps differentiate inflammatory from neoplastic processes and identify areas requiring urgent surgical or medical intervention. Typical codes: CH2YYZZ
A patient with prior breast-conserving surgery and radiation presents with persistent postoperative nodularity and equivocal findings on clinical exam and ultrasound; inpatient tomographic nuclear imaging using an administered radiotracer is performed to distinguish post-treatment changes from recurrent tumor and to map any recurrent functional activity within the breast and adjacent subcutaneous tissues. The three-dimensional study assists in planning potential re-excision or further oncologic treatment. Typical codes: CH2YYZZ

Related Codes

CH20-BREAST-RIGHT-TOMOGRAPHIC-IMAGING

ICD-10-PCS Code For Breast Right: Procedure Code Group Overview

CH21-BREAST-LEFT-TOMOGRAPHIC

ICD-10-PCS Code For Breast Left: Procedure Code Group Overview

CH22-BREASTS-BILATERAL-TOMOGRAPHIC-IMAGING

ICD-10-PCS Code For Breasts, Bilateral: 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
CH2YYZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Skin, Subcutaneous Tissue and Breast using Other Radionuclide

Typical Clinical Scenarios

An elderly woman admitted for evaluation of a newly palpable breast mass with indeterminate findings on mammography and ultrasound; clinicians request three-dimensional nuclear medicine imaging after administration of a radiotracer to assess metabolic activity and better localize the lesion within breast tissue. The inpatient tomographic study aids surgical planning by delineating functional extent of the suspicious area when conventional imaging is inconclusive. Results are used to guide biopsy or operative approach. Typical codes: CH2YYZZ
A middle-aged patient presents to the emergency department with rapidly enlarging, painful subcutaneous nodules and concern for multifocal infection versus inflammatory neoplasm; after admission, three-dimensional nuclear medicine imaging is performed following radionuclide administration to evaluate the distribution and activity of lesions in the skin and subcutaneous tissue. The tomographic study helps differentiate inflammatory from neoplastic processes and identify areas requiring urgent surgical or medical intervention. Typical codes: CH2YYZZ
A patient with prior breast-conserving surgery and radiation presents with persistent postoperative nodularity and equivocal findings on clinical exam and ultrasound; inpatient tomographic nuclear imaging using an administered radiotracer is performed to distinguish post-treatment changes from recurrent tumor and to map any recurrent functional activity within the breast and adjacent subcutaneous tissues. The three-dimensional study assists in planning potential re-excision or further oncologic treatment. Typical codes: CH2YYZZ

Related Codes

CH20-BREAST-RIGHT-TOMOGRAPHIC-IMAGING

ICD-10-PCS Code For Breast Right: Procedure Code Group Overview

CH21-BREAST-LEFT-TOMOGRAPHIC

ICD-10-PCS Code For Breast Left: Procedure Code Group Overview

CH22-BREASTS-BILATERAL-TOMOGRAPHIC-IMAGING

ICD-10-PCS Code For Breasts, Bilateral: 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 Skin, Subcutaneous Tissue And Breast: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Skin, Subcutaneous Tissue And Breast: Procedure Code Group Overview policy alerts

Skin, Subcutaneous Tissue And Breast Tomographic Nuclear Medicine Imaging Procedure Overview

Code Attributes

ICD-10-PCS Code For Skin, Subcutaneous Tissue And Breast: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Skin, Subcutaneous Tissue And Breast: Procedure Code Group Overview policy alerts

Skin, Subcutaneous Tissue And Breast Tomographic Nuclear Medicine Imaging Procedure Overview

Code Attributes

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

Which ICD-10-PCS code group covers tomographic nuclear medicine imaging of the skin, subcutaneous tissue, and breast?

What is the primary purpose of procedures in the CH2Y code group?

Which ICD-10-PCS code represents tomographic nuclear medicine imaging using other radionuclide?

What are the code attributes listed for the CH2Y procedure group?

How does accurate coding within the CH2Y group affect inpatient documentation and reimbursement?

References

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

Which ICD-10-PCS code group covers tomographic nuclear medicine imaging of the skin, subcutaneous tissue, and breast?

What is the primary purpose of procedures in the CH2Y code group?

Which ICD-10-PCS code represents tomographic nuclear medicine imaging using other radionuclide?

What are the code attributes listed for the CH2Y procedure group?

How does accurate coding within the CH2Y group affect inpatient documentation and reimbursement?

References