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 CW20 includes procedures performed to image radioactive emissions in the abdomen. These ICD-10-PCS codes are used for inpatient documentation when three-dimensional nuclear medicine imaging is performed after introduction of radioactive materials to visualize abdominal structures. Accurate coding within the ICD-10-PCS CW20 group is essential for proper inpatient reimbursement, as it captures the procedure performed and determines appropriate case mix and payment.

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Abdomen Tomographic Nuclear Medicine Imaging Procedure Overview

This group includes tomographic nuclear medicine imaging procedures that introduce radioactive materials to capture three-dimensional emissions from the abdomen. These procedures target the anatomical regions of the abdomen and are performed within the Nuclear Medicine section. Accurate coding of these procedures is important for inpatient reimbursement because it documents the specific imaging technique used and ensures correct mapping to case mix and payment systems.

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
C	Section	Nuclear Medicine
W	Body System	Anatomical Regions
2	Operation	Tomographic (Tomo) Nuclear Medicine Imaging
0	Body Part	Abdomen

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

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Abdomen Tomographic Nuclear Medicine Imaging Procedure Overview

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
C	Section	Nuclear Medicine
W	Body System	Anatomical Regions
2	Operation	Tomographic (Tomo) Nuclear Medicine Imaging
0	Body Part	Abdomen

When to Use

Use codes from this group when radioactive materials are introduced and tomographic nuclear medicine imaging is performed to obtain three-dimensional images of the abdomen. These codes apply for inpatient documentation where the imaging procedure is recorded as part of the hospital stay.

ICD-10-PCS Codes

8 rows

ICD-10-PCS Code	Description
CW201ZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Abdomen using Technetium 99m (Tc-99m)
CW20DZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Abdomen using Indium 111 (In-111)
CW20FZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Abdomen using Iodine 123 (I-123)
CW20GZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Abdomen using Iodine 131 (I-131)
CW20KZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Abdomen using Fluorine 18 (F-18)
CW20LZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Abdomen using Gallium 67 (Ga-67)
CW20SZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Abdomen using Thallium 201 (Tl-201)
CW20YZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Abdomen using Other Radionuclide

Typical Clinical Scenarios

An elderly patient admitted with unexplained weight loss and palpable abdominal mass on exam undergoes inpatient evaluation for possible hepatic or intra-abdominal neoplasm. The team orders tomographic nuclear medicine imaging after administration of Fluorine 18–labeled radiotracer to obtain three-dimensional functional images of the abdomen to localize metabolically active lesions and assist in staging. The procedure is performed during the hospital stay as part of diagnostic workup. Typical codes: CW20KZZ
A patient presents to the emergency department with acute onset severe abdominal pain and unexplained fever; laboratory tests suggest possible intra-abdominal abscess. While admitted, tomographic nuclear medicine imaging is performed after injection of Technetium 99m radiotracer to identify areas of focal radiotracer uptake corresponding to infected fluid collections in the abdomen to guide percutaneous drainage planning. The study is obtained urgently during the inpatient encounter to localize the source of sepsis. Typical codes: CW201ZZ
A patient with a known neuroendocrine tumor admitted for worsening abdominal pain and biochemical markers suggestive of disease progression undergoes inpatient tomographic imaging using Indium 111–labeled radiotracer to evaluate somatostatin receptor–positive lesions in the abdomen. The three-dimensional nuclear medicine study is used to reassess disease distribution after prior treatments and to inform potential change in therapy during the hospitalization. Typical codes: CW20DZZ

Related Codes

CW21-ABDOMEN-AND-PELVIS-TOMOGRAPHIC

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

CW23-CHEST-TOMOGRAPHIC-NUCLEAR-MEDICINE

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

CW24-CHEST-AND-ABDOMEN-TOMOGRAPHIC

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

CW26-CHEST-NECK-TOMOGRAPHIC

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

CW2B-HEAD-AND-NECK-TOMOGRAPHIC

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

CW2D-LOWER-EXTREMITY-TOMOGRAPHIC-IMAGING

ICD-10-PCS Code For Lower Extremity: Procedure Code Group Overview

CW2J-PELVIC-REGION-TOMOGRAPHIC-IMAGING

ICD-10-PCS Code for Pelvic Region: Procedure Code Group Overview

CW2M-UPPER-EXTREMITY-TOMOGRAPHIC-IMAGING

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

CW2Y-MULTIPLE-ANATOMICAL-REGIONS-TOMOGRAPHIC

ICD-10-PCS Code For Multiple Anatomical Regions: 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

8 rows

ICD-10-PCS Code	Description
CW201ZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Abdomen using Technetium 99m (Tc-99m)
CW20DZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Abdomen using Indium 111 (In-111)
CW20FZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Abdomen using Iodine 123 (I-123)
CW20GZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Abdomen using Iodine 131 (I-131)
CW20KZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Abdomen using Fluorine 18 (F-18)
CW20LZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Abdomen using Gallium 67 (Ga-67)
CW20SZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Abdomen using Thallium 201 (Tl-201)
CW20YZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Abdomen using Other Radionuclide

Typical Clinical Scenarios

An elderly patient admitted with unexplained weight loss and palpable abdominal mass on exam undergoes inpatient evaluation for possible hepatic or intra-abdominal neoplasm. The team orders tomographic nuclear medicine imaging after administration of Fluorine 18–labeled radiotracer to obtain three-dimensional functional images of the abdomen to localize metabolically active lesions and assist in staging. The procedure is performed during the hospital stay as part of diagnostic workup. Typical codes: CW20KZZ
A patient presents to the emergency department with acute onset severe abdominal pain and unexplained fever; laboratory tests suggest possible intra-abdominal abscess. While admitted, tomographic nuclear medicine imaging is performed after injection of Technetium 99m radiotracer to identify areas of focal radiotracer uptake corresponding to infected fluid collections in the abdomen to guide percutaneous drainage planning. The study is obtained urgently during the inpatient encounter to localize the source of sepsis. Typical codes: CW201ZZ
A patient with a known neuroendocrine tumor admitted for worsening abdominal pain and biochemical markers suggestive of disease progression undergoes inpatient tomographic imaging using Indium 111–labeled radiotracer to evaluate somatostatin receptor–positive lesions in the abdomen. The three-dimensional nuclear medicine study is used to reassess disease distribution after prior treatments and to inform potential change in therapy during the hospitalization. Typical codes: CW20DZZ

Related Codes

CW21-ABDOMEN-AND-PELVIS-TOMOGRAPHIC

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

CW23-CHEST-TOMOGRAPHIC-NUCLEAR-MEDICINE

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

CW24-CHEST-AND-ABDOMEN-TOMOGRAPHIC

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

CW26-CHEST-NECK-TOMOGRAPHIC

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

CW2B-HEAD-AND-NECK-TOMOGRAPHIC

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

CW2D-LOWER-EXTREMITY-TOMOGRAPHIC-IMAGING

ICD-10-PCS Code For Lower Extremity: Procedure Code Group Overview

CW2J-PELVIC-REGION-TOMOGRAPHIC-IMAGING

ICD-10-PCS Code for Pelvic Region: Procedure Code Group Overview

CW2M-UPPER-EXTREMITY-TOMOGRAPHIC-IMAGING

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

CW2Y-MULTIPLE-ANATOMICAL-REGIONS-TOMOGRAPHIC

ICD-10-PCS Code For Multiple Anatomical Regions: 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: Procedure Code Group Overview

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

Abdomen Tomographic Nuclear Medicine Imaging 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 Tomographic Nuclear Medicine Imaging Procedure Overview

Code Attributes

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

Which procedures are included in the ICD-10-PCS code group CW20?

What is the section and operation attribute for codes in CW20?

How do individual ICD-10-PCS codes in CW20 differ from each other?

Why is accurate coding within the CW20 group important for inpatient care?

Are there Related DRGs listed for CW20 codes?

References

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

Which procedures are included in the ICD-10-PCS code group CW20?

What is the section and operation attribute for codes in CW20?

How do individual ICD-10-PCS codes in CW20 differ from each other?

Why is accurate coding within the CW20 group important for inpatient care?

Are there Related DRGs listed for CW20 codes?

References