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

The International Classification of Diseases, Tenth Revision, Procedure Coding System (ICD-10-PCS) code group BB4C includes procedures performed to image structures in the mediastinum using ultrasonography. These ICD-10-PCS codes are used for inpatient documentation when real time ultrasound imaging of mediastinal anatomy or flow information is performed to evaluate or monitor respiratory system structures. Accurate coding within the ICD-10-PCS BB4C group is essential for proper inpatient reimbursement, as it captures the procedure performed and supports clinical documentation accuracy.

Customize your policy alerts

Sign up for ICD-10-PCS Code For Mediastinum: 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.

Mediastinum Ultrasonography Procedure Overview

This group includes inpatient procedures that use real time display of images developed from the capture of reflected and attenuated high frequency sound waves to evaluate the mediastinum. The procedures target the respiratory system and involve noninvasive imaging of mediastinal structures such as the heart-adjacent tissues, great vessels, lymph nodes, and airways. Accurate ICD-10-PCS coding of these ultrasonography procedures supports proper inpatient reimbursement by reflecting the specific body part and imaging operation performed.

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
B	Section	Imaging
B	Body System	Respiratory System
4	Operation	Ultrasonography
C	Body Part	Mediastinum

Explore openpayer tools

View all tools

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

Customize your policy alerts

Sign up for ICD-10-PCS Code For Mediastinum: 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.

Mediastinum Ultrasonography Procedure Overview

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
B	Section	Imaging
B	Body System	Respiratory System
4	Operation	Ultrasonography
C	Body Part	Mediastinum

When to Use

Use a code from this group when real time ultrasound imaging is performed to evaluate or monitor mediastinal anatomy or flow related to the respiratory system. Assign these codes in the inpatient record when the documented procedure specifies ultrasonography of the mediastinum.

ICD-10-PCS Codes

1 rows

ICD-10-PCS Code	Description
BB4CZZZ	Ultrasonography of Mediastinum

Typical Clinical Scenarios

A middle-aged patient is admitted through the emergency department with acute shortness of breath, chest pain, and clinical concern for mediastinal hemorrhage or expanding hematoma after recent central line placement. Inpatient care is required for monitoring hemodynamics and diagnosing the source of compression on airway or great vessels; real-time ultrasonography of the mediastinum is performed at bedside to evaluate mediastinal structures and guide urgent management decisions. Typical codes: BB4CZZZ
An elderly patient hospitalized for staging of newly diagnosed lung cancer undergoes planned inpatient diagnostic workup to evaluate mediastinal lymphadenopathy and relationship of tumors to adjacent mediastinal structures. Real-time ultrasound imaging of the mediastinum is used to characterize masses and guide further sampling or multidisciplinary treatment planning during the admission. Typical codes: BB4CZZZ
A postoperative patient on the inpatient surgical ward develops unexplained hypoxia and hemodynamic instability after thoracic surgery, raising concern for postoperative mediastinal fluid collection or entrapped air causing tamponade physiology. Bedside mediastinal ultrasonography is performed to rapidly assess mediastinal anatomy, detect collections or compression of airway/great vessels, and assist decision-making about urgent intervention. Typical codes: BB4CZZZ

Related Codes

BB4B-PLEURA-ULTRASONOGRAPHY

ICD-10-PCS Code For Pleura: 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

1 rows

ICD-10-PCS Code	Description
BB4CZZZ	Ultrasonography of Mediastinum

Typical Clinical Scenarios

A middle-aged patient is admitted through the emergency department with acute shortness of breath, chest pain, and clinical concern for mediastinal hemorrhage or expanding hematoma after recent central line placement. Inpatient care is required for monitoring hemodynamics and diagnosing the source of compression on airway or great vessels; real-time ultrasonography of the mediastinum is performed at bedside to evaluate mediastinal structures and guide urgent management decisions. Typical codes: BB4CZZZ
An elderly patient hospitalized for staging of newly diagnosed lung cancer undergoes planned inpatient diagnostic workup to evaluate mediastinal lymphadenopathy and relationship of tumors to adjacent mediastinal structures. Real-time ultrasound imaging of the mediastinum is used to characterize masses and guide further sampling or multidisciplinary treatment planning during the admission. Typical codes: BB4CZZZ
A postoperative patient on the inpatient surgical ward develops unexplained hypoxia and hemodynamic instability after thoracic surgery, raising concern for postoperative mediastinal fluid collection or entrapped air causing tamponade physiology. Bedside mediastinal ultrasonography is performed to rapidly assess mediastinal anatomy, detect collections or compression of airway/great vessels, and assist decision-making about urgent intervention. Typical codes: BB4CZZZ

Related Codes

BB4B-PLEURA-ULTRASONOGRAPHY

ICD-10-PCS Code For Pleura: 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 Mediastinum: Procedure Code Group Overview

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

Mediastinum Ultrasonography Procedure Overview

Code Attributes

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

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

Mediastinum Ultrasonography Procedure Overview

Code Attributes

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

Which ICD-10-PCS code represents ultrasonography of the mediastinum?

What body system and operation does the BB4C code group represent?

For what clinical purpose is ultrasonography of the mediastinum coded in ICD-10-PCS BB4C?

How does accurate coding within the BB4C group affect inpatient reimbursement?

What documentation elements support assigning the `BB4CZZZ` code?

References

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

Which ICD-10-PCS code represents ultrasonography of the mediastinum?

What body system and operation does the BB4C code group represent?

For what clinical purpose is ultrasonography of the mediastinum coded in ICD-10-PCS BB4C?

How does accurate coding within the BB4C group affect inpatient reimbursement?

What documentation elements support assigning the `BB4CZZZ` code?

References