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

The International Classification of Diseases, Tenth Revision, Procedure Coding System (ICD-10-PCS) code group BW21 includes procedures performed to capture and computer reformatted digital displays of multiplanar images of the abdomen and pelvis. These ICD-10-PCS codes are used for inpatient documentation when computerized tomography imaging of the abdomen and pelvis is performed to evaluate, diagnose, or guide treatment. Accurate coding within the ICD-10-PCS BW21 group is essential for proper inpatient reimbursement, as it captures the specific imaging procedure performed and supports clinical documentation accuracy.

Customize your policy alerts

Sign up for ICD-10-PCS Code For Abdomen And Pelvis: 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.

Abdomen And Pelvis Computerized Tomography Procedure Overview

This procedure group includes computerized tomography imaging procedures of the abdomen and pelvis that use multiple exposures of external ionizing radiation to generate multiplanar images. These procedures target the anatomical regions of the abdomen and pelvis and produce reformatted digital displays for diagnostic and treatment planning purposes. Accurate ICD-10-PCS coding of these imaging procedures ensures inpatient records reflect the exact imaging performed and supports correct case mix and reimbursement.

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
B	Section	Imaging
W	Body System	Anatomical Regions
2	Operation	Computerized Tomography (CT Scan)
1	Body Part	Abdomen and Pelvis

Explore openpayer tools

View all tools

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

Customize your policy alerts

Sign up for ICD-10-PCS Code For Abdomen And Pelvis: 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.

Abdomen And Pelvis Computerized Tomography Procedure Overview

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
B	Section	Imaging
W	Body System	Anatomical Regions
2	Operation	Computerized Tomography (CT Scan)
1	Body Part	Abdomen and Pelvis

When to Use

Use a code from this group when a computerized tomography scan of the abdomen and pelvis is performed and computerized reformatting produces multiplanar images for diagnosis or treatment planning. Select the specific code that reflects the imaging details, such as contrast use or image reconstruction, as documented in the inpatient record.

ICD-10-PCS Codes

7 rows

ICD-10-PCS Code	Description
BW2100Z	Computerized Tomography (CT Scan) of Abdomen and Pelvis using High Osmolar Contrast, Unenhanced and Enhanced
BW210ZZ	Computerized Tomography (CT Scan) of Abdomen and Pelvis using High Osmolar Contrast
BW2110Z	Computerized Tomography (CT Scan) of Abdomen and Pelvis using Low Osmolar Contrast, Unenhanced and Enhanced
BW211ZZ	Computerized Tomography (CT Scan) of Abdomen and Pelvis using Low Osmolar Contrast
BW21Y0Z	Computerized Tomography (CT Scan) of Abdomen and Pelvis using Other Contrast, Unenhanced and Enhanced
BW21YZZ	Computerized Tomography (CT Scan) of Abdomen and Pelvis using Other Contrast
BW21ZZZ	Computerized Tomography (CT Scan) of Abdomen and Pelvis

Typical Clinical Scenarios

A 62-year-old male presents to the emergency department with acute, severe right upper quadrant abdominal pain, fever, and leukocytosis suspicious for perforated viscus versus intra-abdominal abscess. He is admitted for observation and diagnostic imaging to evaluate for free air, fluid collections, or inflammatory changes; a contrast-enhanced CT of the abdomen and pelvis with both unenhanced and enhanced phases is ordered to maximize detection of acute pathology. The imaging will produce reformatted multiplanar images for surgical decision-making. Typical codes: BW2110Z
A 48-year-old female with known colorectal cancer is admitted for staging and treatment planning prior to initiation of systemic therapy. She is scheduled for inpatient CT imaging of the abdomen and pelvis with contrast to assess extent of disease, evaluate for liver metastases, and produce multiplanar reformatted images to guide oncology care. The CT protocol includes both noncontrast and contrast-enhanced phases per oncology imaging protocol. Typical codes: BW2100Z
A 70-year-old male presents with increasing abdominal distention and suspected renal insufficiency after prior contrast-enhanced imaging. The clinical team requires an alternative contrast agent with lower nephrotoxicity risk to complete a diagnostic CT of the abdomen and pelvis and obtain multiplanar reformatted images to evaluate for obstructive uropathy and ascites. The exam uses a low-osmolar contrast agent due to renal function concerns. Typical codes: BW211ZZ

Related Codes

BW20-ABDOMEN-COMPUTERIZED-TOMOGRAPHY

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

BW24-CHEST-AND-ABDOMEN-COMPUTERIZED-TOMOGRAPHY

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

BW25-CHEST-ABDOMEN-AND-PELVIS-COMPUTERIZED-TOMOGRAPHY

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

BW28-HEAD-COMPUTERIZED-TOMOGRAPHY

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

BW29-HEAD-AND-NECK-COMPUTERIZED-TOMOGRAPHY

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

BW2F-NECK-COMPUTERIZED-TOMOGRAPHY

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

BW2G-PELVIC-REGION-COMPUTERIZED-TOMOGRAPHY

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.

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

7 rows

ICD-10-PCS Code	Description
BW2100Z	Computerized Tomography (CT Scan) of Abdomen and Pelvis using High Osmolar Contrast, Unenhanced and Enhanced
BW210ZZ	Computerized Tomography (CT Scan) of Abdomen and Pelvis using High Osmolar Contrast
BW2110Z	Computerized Tomography (CT Scan) of Abdomen and Pelvis using Low Osmolar Contrast, Unenhanced and Enhanced
BW211ZZ	Computerized Tomography (CT Scan) of Abdomen and Pelvis using Low Osmolar Contrast
BW21Y0Z	Computerized Tomography (CT Scan) of Abdomen and Pelvis using Other Contrast, Unenhanced and Enhanced
BW21YZZ	Computerized Tomography (CT Scan) of Abdomen and Pelvis using Other Contrast
BW21ZZZ	Computerized Tomography (CT Scan) of Abdomen and Pelvis

Typical Clinical Scenarios

A 62-year-old male presents to the emergency department with acute, severe right upper quadrant abdominal pain, fever, and leukocytosis suspicious for perforated viscus versus intra-abdominal abscess. He is admitted for observation and diagnostic imaging to evaluate for free air, fluid collections, or inflammatory changes; a contrast-enhanced CT of the abdomen and pelvis with both unenhanced and enhanced phases is ordered to maximize detection of acute pathology. The imaging will produce reformatted multiplanar images for surgical decision-making. Typical codes: BW2110Z
A 48-year-old female with known colorectal cancer is admitted for staging and treatment planning prior to initiation of systemic therapy. She is scheduled for inpatient CT imaging of the abdomen and pelvis with contrast to assess extent of disease, evaluate for liver metastases, and produce multiplanar reformatted images to guide oncology care. The CT protocol includes both noncontrast and contrast-enhanced phases per oncology imaging protocol. Typical codes: BW2100Z
A 70-year-old male presents with increasing abdominal distention and suspected renal insufficiency after prior contrast-enhanced imaging. The clinical team requires an alternative contrast agent with lower nephrotoxicity risk to complete a diagnostic CT of the abdomen and pelvis and obtain multiplanar reformatted images to evaluate for obstructive uropathy and ascites. The exam uses a low-osmolar contrast agent due to renal function concerns. Typical codes: BW211ZZ

Related Codes

BW20-ABDOMEN-COMPUTERIZED-TOMOGRAPHY

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

BW24-CHEST-AND-ABDOMEN-COMPUTERIZED-TOMOGRAPHY

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

BW25-CHEST-ABDOMEN-AND-PELVIS-COMPUTERIZED-TOMOGRAPHY

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

BW28-HEAD-COMPUTERIZED-TOMOGRAPHY

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

BW29-HEAD-AND-NECK-COMPUTERIZED-TOMOGRAPHY

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

BW2F-NECK-COMPUTERIZED-TOMOGRAPHY

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

BW2G-PELVIC-REGION-COMPUTERIZED-TOMOGRAPHY

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.

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

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

Abdomen And Pelvis Computerized Tomography Procedure Overview

Code Attributes

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

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

Abdomen And Pelvis Computerized Tomography Procedure Overview

Code Attributes

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

What procedures are included in the ICD-10-PCS BW21 code group?

Which ICD-10-PCS codes represent CT scans of the abdomen and pelvis with high osmolar contrast?

How does the BW21 code group distinguish contrast types and enhanced vs unenhanced studies?

Why is accurate coding within ICD-10-PCS BW21 important for inpatient records?

Are there related DRGs listed for the BW21 procedure group?

References

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

What procedures are included in the ICD-10-PCS BW21 code group?

Which ICD-10-PCS codes represent CT scans of the abdomen and pelvis with high osmolar contrast?

How does the BW21 code group distinguish contrast types and enhanced vs unenhanced studies?

Why is accurate coding within ICD-10-PCS BW21 important for inpatient records?

Are there related DRGs listed for the BW21 procedure group?

References