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

The International Classification of Diseases, Tenth Revision, Procedure Coding System (ICD-10-PCS) code group CW2M includes procedures performed to capture three-dimensional nuclear medicine images in the upper extremity. These ICD-10-PCS codes are used for inpatient documentation when tomographic nuclear medicine imaging with introduction of radioactive materials is performed to evaluate upper extremity structure or function. Accurate coding within the ICD-10-PCS CW2M group is essential for proper inpatient reimbursement, as it captures the procedure performed and supports clinical documentation accuracy.

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Upper Extremity Tomographic Nuclear Medicine Imaging Procedure Overview

This group includes tomographic nuclear medicine imaging procedures that introduce radioactive materials to capture three-dimensional images of the upper extremity. These procedures target the anatomical regions of the upper limb and use radioactive tracers to visualize functional and structural information. Accurate coding of these imaging procedures in the International Classification of Diseases, Tenth Revision, Procedure Coding System supports proper inpatient reimbursement and ensures clinical documentation reflects the imaging performed.

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
M	Body Part	Upper Extremity

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

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Upper Extremity 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
M	Body Part	Upper Extremity

When to Use

Use a code from this group when radioactive tracers are introduced and tomographic nuclear medicine imaging is performed specifically for the upper extremity. These codes apply when three-dimensional capture of radioactive emissions is required to evaluate injury, disease, perfusion, or other functional aspects of the upper limb.

ICD-10-PCS Codes

8 rows

ICD-10-PCS Code	Description
CW2M1ZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Upper Extremity using Technetium 99m (Tc-99m)
CW2MDZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Upper Extremity using Indium 111 (In-111)
CW2MFZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Upper Extremity using Iodine 123 (I-123)
CW2MGZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Upper Extremity using Iodine 131 (I-131)
CW2MKZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Upper Extremity using Fluorine 18 (F-18)
CW2MLZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Upper Extremity using Gallium 67 (Ga-67)
CW2MSZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Upper Extremity using Thallium 201 (Tl-201)
CW2MYZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Upper Extremity using Other Radionuclide

Typical Clinical Scenarios

An elderly patient admitted after a fall with a closed distal radius fracture and persistent unexplained ischemic pain and suspected compartment syndrome in the forearm despite splinting; inpatient evaluation includes functional perfusion assessment of the upper extremity to differentiate vascular compromise from soft-tissue injury, requiring tomographic nuclear medicine imaging with an injected perfusion tracer. Typical codes: CW2MSZZ, CW2MKZZ
A middle-aged patient with a history of melanoma presenting for staged inpatient evaluation of suspected metastatic spread to the upper extremity soft tissues and regional nodes; three-dimensional radionuclide imaging is performed after administration of a tracer that localizes soft-tissue or lymphatic involvement to guide further management. Typical codes: CW2MLZZ, CW2MYZZ
A hospitalized patient with persistent postoperative infection and concern for osteomyelitis of the humerus after open reduction and internal fixation; tomographic nuclear medicine imaging using a bone-seeking radiopharmaceutical is used to assess for focal bony infection versus postoperative changes when MRI is contraindicated. Typical codes: CW2M1ZZ, CW2MDZZ

Related Codes

CW20-ABDOMEN-TOMOGRAPHIC-IMAGING

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

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

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
CW2M1ZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Upper Extremity using Technetium 99m (Tc-99m)
CW2MDZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Upper Extremity using Indium 111 (In-111)
CW2MFZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Upper Extremity using Iodine 123 (I-123)
CW2MGZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Upper Extremity using Iodine 131 (I-131)
CW2MKZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Upper Extremity using Fluorine 18 (F-18)
CW2MLZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Upper Extremity using Gallium 67 (Ga-67)
CW2MSZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Upper Extremity using Thallium 201 (Tl-201)
CW2MYZZ	Tomographic (Tomo) Nuclear Medicine Imaging of Upper Extremity using Other Radionuclide

Typical Clinical Scenarios

An elderly patient admitted after a fall with a closed distal radius fracture and persistent unexplained ischemic pain and suspected compartment syndrome in the forearm despite splinting; inpatient evaluation includes functional perfusion assessment of the upper extremity to differentiate vascular compromise from soft-tissue injury, requiring tomographic nuclear medicine imaging with an injected perfusion tracer. Typical codes: CW2MSZZ, CW2MKZZ
A middle-aged patient with a history of melanoma presenting for staged inpatient evaluation of suspected metastatic spread to the upper extremity soft tissues and regional nodes; three-dimensional radionuclide imaging is performed after administration of a tracer that localizes soft-tissue or lymphatic involvement to guide further management. Typical codes: CW2MLZZ, CW2MYZZ
A hospitalized patient with persistent postoperative infection and concern for osteomyelitis of the humerus after open reduction and internal fixation; tomographic nuclear medicine imaging using a bone-seeking radiopharmaceutical is used to assess for focal bony infection versus postoperative changes when MRI is contraindicated. Typical codes: CW2M1ZZ, CW2MDZZ

Related Codes

CW20-ABDOMEN-TOMOGRAPHIC-IMAGING

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

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

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 Upper Extremity: Procedure Code Group Overview

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

Upper Extremity Tomographic Nuclear Medicine Imaging Procedure Overview

Code Attributes

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

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

Upper Extremity 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 CW2M?

What is the ICD-10-PCS section and operation for codes in CW2M?

How should specific radionuclide imaging be coded within CW2M?

Why is accurate coding in the CW2M group important for inpatient documentation?

What are the available radionuclide options listed in the CW2M code group?

References

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

Which procedures are included in the ICD-10-PCS code group CW2M?

What is the ICD-10-PCS section and operation for codes in CW2M?

How should specific radionuclide imaging be coded within CW2M?

Why is accurate coding in the CW2M group important for inpatient documentation?

What are the available radionuclide options listed in the CW2M code group?

References