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

The International Classification of Diseases, Tenth Revision, Procedure Coding System (ICD-10-PCS) code group BH31 includes procedures performed to image structures in the left breast. These ICD-10-PCS codes are used for inpatient documentation when magnetic resonance imaging is performed to evaluate the skin, subcutaneous tissue, and breast for diagnostic or preoperative assessment. Accurate coding within the ICD-10-PCS BH31 group is essential for proper inpatient reimbursement, as it captures the imaging procedure performed and supports clinical documentation accuracy.

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Breast, Left Magnetic Resonance Imaging Procedure Overview

This procedure group includes magnetic resonance imaging of the left breast, targeting the skin, subcutaneous tissue, and breast structures. These procedures involve computer-reformatted multiplanar images generated from radiofrequency signals within a magnetic field to evaluate breast tissue. Accurate ICD-10-PCS coding ensures the inpatient record reflects the diagnostic imaging performed and supports appropriate case mix and reimbursement.

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
B	Section	Imaging
H	Body System	Skin, Subcutaneous Tissue and Breast
3	Operation	Magnetic Resonance Imaging (MRI)
1	Body Part	Breast, Left

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

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Breast, Left Magnetic Resonance Imaging Procedure Overview

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
B	Section	Imaging
H	Body System	Skin, Subcutaneous Tissue and Breast
3	Operation	Magnetic Resonance Imaging (MRI)
1	Body Part	Breast, Left

When to Use

Use a code from this group when inpatient magnetic resonance imaging is performed specifically on the left breast for diagnostic evaluation or treatment planning. Assign these codes when the imaging is documented as performed for the left breast structures during the inpatient stay.

ICD-10-PCS Codes

3 rows

ICD-10-PCS Code	Description
BH31Y0Z	Magnetic Resonance Imaging (MRI) of Left Breast using Other Contrast, Unenhanced and Enhanced
BH31YZZ	Magnetic Resonance Imaging (MRI) of Left Breast using Other Contrast
BH31ZZZ	Magnetic Resonance Imaging (MRI) of Left Breast

Typical Clinical Scenarios

An adult woman admitted for inpatient evaluation after a newly detected palpable mass in the left breast with suspicious imaging on prior outpatient mammography and ultrasound; inpatient workup is undertaken because of progressive pain and concern for impending biopsy or surgical planning, and high-resolution multiplanar imaging of the left breast is obtained to better characterize lesion extent and tissue enhancement patterns. Typical codes: BH31ZZZ.
A patient with known left breast carcinoma hospitalized for preoperative staging and surgical planning prior to mastectomy; contrast-enhanced MRI of the left breast is performed to delineate multifocal disease, chest wall involvement, and to guide extent of resection and reconstruction decisions. Typical codes: BH31Y0Z, BH31YZZ.
A postpartum patient develops a large left breast inflammatory mass with concern for abscess versus inflammatory carcinoma and is admitted for IV antibiotics and possible intervention; MRI of the left breast is used during the inpatient stay to differentiate inflammatory processes from malignancy and to guide percutaneous drainage if needed. Typical codes: BH31ZZZ, BH31YZZ.

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

BH32-BREASTS-MAGNETIC-RESONANCE-IMAGING

ICD-10-PCS Code For Breasts, Bilateral: Procedure Code Group Overview

BH3D-SUBCUTANEOUS-TISSUE-HEAD-NECK-MRI

ICD-10-PCS Code For Subcutaneous Tissue Head Neck: Procedure Code Group Overview

BH3F-SUBCUTANEOUS-TISSUE-UPPER-EXTREMITY-MRI

ICD-10-PCS Code For Subcutaneous Tissue Upper Extremity: Procedure Code Group Overview

BH3G-SUBCUTANEOUS-TISSUE-THORAX-MAGNETIC-RESONANCE-IMAGING

ICD-10-PCS Code For Subcutaneous Tissue Thorax: Procedure Code Group Overview

BH3H-SUBCUTANEOUS-TISSUE-MRI

ICD-10-PCS Code For Subcutaneous Tissue, Abdomen And Pelvis: Procedure Code Group Overview

BH3J-SUBCUTANEOUS-TISSUE-LOWER-EXTREMITY-MRI

ICD-10-PCS Code For Subcutaneous Tissue, Lower Extremity: 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

3 rows

ICD-10-PCS Code	Description
BH31Y0Z	Magnetic Resonance Imaging (MRI) of Left Breast using Other Contrast, Unenhanced and Enhanced
BH31YZZ	Magnetic Resonance Imaging (MRI) of Left Breast using Other Contrast
BH31ZZZ	Magnetic Resonance Imaging (MRI) of Left Breast

Typical Clinical Scenarios

An adult woman admitted for inpatient evaluation after a newly detected palpable mass in the left breast with suspicious imaging on prior outpatient mammography and ultrasound; inpatient workup is undertaken because of progressive pain and concern for impending biopsy or surgical planning, and high-resolution multiplanar imaging of the left breast is obtained to better characterize lesion extent and tissue enhancement patterns. Typical codes: BH31ZZZ.
A patient with known left breast carcinoma hospitalized for preoperative staging and surgical planning prior to mastectomy; contrast-enhanced MRI of the left breast is performed to delineate multifocal disease, chest wall involvement, and to guide extent of resection and reconstruction decisions. Typical codes: BH31Y0Z, BH31YZZ.
A postpartum patient develops a large left breast inflammatory mass with concern for abscess versus inflammatory carcinoma and is admitted for IV antibiotics and possible intervention; MRI of the left breast is used during the inpatient stay to differentiate inflammatory processes from malignancy and to guide percutaneous drainage if needed. Typical codes: BH31ZZZ, BH31YZZ.

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

BH32-BREASTS-MAGNETIC-RESONANCE-IMAGING

ICD-10-PCS Code For Breasts, Bilateral: Procedure Code Group Overview

BH3D-SUBCUTANEOUS-TISSUE-HEAD-NECK-MRI

ICD-10-PCS Code For Subcutaneous Tissue Head Neck: Procedure Code Group Overview

BH3F-SUBCUTANEOUS-TISSUE-UPPER-EXTREMITY-MRI

ICD-10-PCS Code For Subcutaneous Tissue Upper Extremity: Procedure Code Group Overview

BH3G-SUBCUTANEOUS-TISSUE-THORAX-MAGNETIC-RESONANCE-IMAGING

ICD-10-PCS Code For Subcutaneous Tissue Thorax: Procedure Code Group Overview

BH3H-SUBCUTANEOUS-TISSUE-MRI

ICD-10-PCS Code For Subcutaneous Tissue, Abdomen And Pelvis: Procedure Code Group Overview

BH3J-SUBCUTANEOUS-TISSUE-LOWER-EXTREMITY-MRI

ICD-10-PCS Code For Subcutaneous Tissue, Lower Extremity: 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 Breast Left: Procedure Code Group Overview

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Breast, Left Magnetic Resonance Imaging Procedure Overview

Code Attributes

OpenPayer

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

Sign up for ICD-10-PCS Code For Breast Left: Procedure Code Group Overview policy alerts

Breast, Left Magnetic Resonance 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 Breast Left: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Breast Left: Procedure Code Group Overview policy alerts

Breast, Left Magnetic Resonance Imaging Procedure Overview

Code Attributes

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

Sign up for ICD-10-PCS Code For Breast Left: Procedure Code Group Overview policy alerts

Breast, Left Magnetic Resonance Imaging Procedure Overview

Code Attributes

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

Which body system does ICD-10-PCS code group BH31 apply to?

What operation is represented by the BH31 code group?

What are the specific codes included in the BH31 group?

For what clinical purpose are BH31 codes used in inpatient records?

How does accurate coding within BH31 affect reimbursement?

References

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

Which body system does ICD-10-PCS code group BH31 apply to?

What operation is represented by the BH31 code group?

What are the specific codes included in the BH31 group?

For what clinical purpose are BH31 codes used in inpatient records?

How does accurate coding within BH31 affect reimbursement?

References