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

The International Classification of Diseases, Tenth Revision, Procedure Coding System (ICD-10-PCS) code group BW40 includes procedures performed to visualize anatomy and flow information in the abdomen using ultrasonography. These ICD-10-PCS codes are used for inpatient documentation when real-time abdominal ultrasound imaging is performed to evaluate organs, vasculature, or fluid collections. Accurate coding within the ICD-10-PCS BW40 group is essential for proper inpatient reimbursement, as it captures the procedure performed and supports clinical documentation accuracy.

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Abdomen Ultrasonography Procedure Overview

This procedure group includes real-time imaging performed using reflected and attenuated high-frequency sound waves to visualize abdominal anatomy and flow information. The procedures target the abdomen and surrounding anatomical regions and are recorded in the Imaging section of ICD-10-PCS. Accurate coding ensures inpatient records reflect the imaging performed and supports appropriate case mix assignment and reimbursement.

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
B	Section	Imaging
W	Body System	Anatomical Regions
4	Operation	Ultrasonography
0	Body Part	Abdomen

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

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Abdomen Ultrasonography Procedure Overview

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
B	Section	Imaging
W	Body System	Anatomical Regions
4	Operation	Ultrasonography
0	Body Part	Abdomen

When to Use

Use a code from this group when a real-time abdominal ultrasound examination is performed during an inpatient encounter to evaluate abdominal structures or blood flow. Codes are assigned when the procedure is documented in the medical record and supports the clinical reason for imaging.

ICD-10-PCS Codes

1 rows

ICD-10-PCS Code	Description
BW40ZZZ	Ultrasonography of Abdomen

Typical Clinical Scenarios

A 62-year-old man is admitted from the emergency department with acute onset right upper quadrant pain, fever, and elevated white blood cell count. The team suspects acute cholecystitis or biliary obstruction and orders a real-time abdominal ultrasound to evaluate the gallbladder, biliary tree, and adjacent liver parenchyma for stones, wall thickening, pericholecystic fluid, or dilated ducts. The imaging is performed at the bedside to guide further inpatient management. Typical codes: BW40ZZZ
A 48-year-old woman is admitted for evaluation of unexplained abdominal distention and progressive ascites of uncertain etiology. As part of the planned inpatient diagnostic workup, a comprehensive real-time abdominal ultrasound is performed to assess liver morphology, portal venous flow, ascitic fluid distribution, and to identify possible masses or cirrhotic changes. Results will guide paracentesis planning and further hepatology management during the admission. Typical codes: BW40ZZZ
A 55-year-old patient hospitalized for severe pancreatitis develops worsening hypotension and a drop in hemoglobin; the team is concerned about hemorrhagic fluid collection or pseudocyst with bleeding. An urgent bedside abdominal ultrasound is obtained to identify fluid collections, active bleeding signs, or vascular flow abnormalities to direct emergent interventional or surgical decisions. The study is performed real-time to evaluate anatomy and flow within the abdominal cavity. Typical codes: BW40ZZZ

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

BW4F-NECK-ULTRASONOGRAPHY

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

BW4G-PELVIC-REGION-ULTRASONOGRAPHY

ICD-10-PCS Code For Pelvic Region: 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
BW40ZZZ	Ultrasonography of Abdomen

Typical Clinical Scenarios

A 62-year-old man is admitted from the emergency department with acute onset right upper quadrant pain, fever, and elevated white blood cell count. The team suspects acute cholecystitis or biliary obstruction and orders a real-time abdominal ultrasound to evaluate the gallbladder, biliary tree, and adjacent liver parenchyma for stones, wall thickening, pericholecystic fluid, or dilated ducts. The imaging is performed at the bedside to guide further inpatient management. Typical codes: BW40ZZZ
A 48-year-old woman is admitted for evaluation of unexplained abdominal distention and progressive ascites of uncertain etiology. As part of the planned inpatient diagnostic workup, a comprehensive real-time abdominal ultrasound is performed to assess liver morphology, portal venous flow, ascitic fluid distribution, and to identify possible masses or cirrhotic changes. Results will guide paracentesis planning and further hepatology management during the admission. Typical codes: BW40ZZZ
A 55-year-old patient hospitalized for severe pancreatitis develops worsening hypotension and a drop in hemoglobin; the team is concerned about hemorrhagic fluid collection or pseudocyst with bleeding. An urgent bedside abdominal ultrasound is obtained to identify fluid collections, active bleeding signs, or vascular flow abnormalities to direct emergent interventional or surgical decisions. The study is performed real-time to evaluate anatomy and flow within the abdominal cavity. Typical codes: BW40ZZZ

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

BW4F-NECK-ULTRASONOGRAPHY

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

BW4G-PELVIC-REGION-ULTRASONOGRAPHY

ICD-10-PCS Code For Pelvic Region: 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 Abdomen: Procedure Code Group Overview

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Abdomen Ultrasonography Procedure Overview

Code Attributes

OpenPayer

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

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

Abdomen Ultrasonography 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 Abdomen: Procedure Code Group Overview

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

Abdomen Ultrasonography Procedure Overview

Code Attributes

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

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

Abdomen Ultrasonography Procedure Overview

Code Attributes

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

What does the ICD-10-PCS group `BW40` represent?

Which specific code is listed in the Abdomen Ultrasonography group?

In which section and body system is `BW40` categorized within ICD-10-PCS?

How does accurate coding within `BW40` affect inpatient documentation?

Are there related DRGs listed for the BW40 ultrasonography group?

References

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

What does the ICD-10-PCS group `BW40` represent?

Which specific code is listed in the Abdomen Ultrasonography group?

In which section and body system is `BW40` categorized within ICD-10-PCS?

How does accurate coding within `BW40` affect inpatient documentation?

Are there related DRGs listed for the BW40 ultrasonography group?

References