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 CW1M includes procedures performed to introduce radioactive materials and obtain planar nuclear medicine images of the upper extremity. These ICD-10-PCS codes are used for inpatient documentation when a single-plane nuclear medicine study of the upper extremity is performed using radiopharmaceuticals to capture emitted radiation. Accurate coding within the ICD-10-PCS CW1M group is essential for proper inpatient reimbursement, as it captures the imaging modality and anatomical target to determine appropriate case mix and payment.

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Upper Extremity Planar Nuclear Medicine Imaging Procedure Overview

This procedure group includes planar nuclear medicine imaging studies that capture radioactive emissions from the upper extremity to create single-plane diagnostic images. These procedures target the anatomical regions of the upper extremity and involve introduction of radioactive materials and capture of emitted radiation for planar image acquisition. Accurate coding of these inpatient procedures ensures the documented imaging modality and anatomical focus are represented for proper case assignment and reimbursement.

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
C	Section	Nuclear Medicine
W	Body System	Anatomical Regions
1	Operation	Planar 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 Planar Nuclear Medicine Imaging Procedure Overview

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
C	Section	Nuclear Medicine
W	Body System	Anatomical Regions
1	Operation	Planar Nuclear Medicine Imaging
M	Body Part	Upper Extremity

When to Use

Use codes from this group when an inpatient undergoes a planar nuclear medicine study of the upper extremity involving administration of a radiopharmaceutical and single-plane image capture. These codes apply when the procedure documentation specifies introduction of radioactive materials and planar imaging as the method of image acquisition for the upper extremity.

ICD-10-PCS Codes

7 rows

ICD-10-PCS Code	Description
CW1M1ZZ	Planar Nuclear Medicine Imaging of Upper Extremity using Technetium 99m (Tc-99m)
CW1MDZZ	Planar Nuclear Medicine Imaging of Upper Extremity using Indium 111 (In-111)
CW1MFZZ	Planar Nuclear Medicine Imaging of Upper Extremity using Iodine 123 (I-123)
CW1MGZZ	Planar Nuclear Medicine Imaging of Upper Extremity using Iodine 131 (I-131)
CW1MLZZ	Planar Nuclear Medicine Imaging of Upper Extremity using Gallium 67 (Ga-67)
CW1MSZZ	Planar Nuclear Medicine Imaging of Upper Extremity using Thallium 201 (Tl-201)
CW1MYZZ	Planar Nuclear Medicine Imaging of Upper Extremity using Other Radionuclide

Typical Clinical Scenarios

An elderly patient is admitted with progressive, unexplained swelling and focal pain of the forearm and hand after failed conservative outpatient studies; inpatient assessment includes evaluation for osteomyelitis or focal infection when radiographs are inconclusive, and a planar nuclear medicine study is performed after IV administration of a technetium-labeled radiopharmaceutical to localize increased uptake in the upper extremity. Typical codes: CW1M1ZZ
A middle-aged patient presents to the hospital with suspected occult soft-tissue inflammation of the shoulder and upper arm after trauma, where MRI is contraindicated due to a pacemaker; a single-plane nuclear medicine scan using thallium is ordered inpatient to assess perfusion and inflammatory activity in the affected upper extremity. Typical codes: CW1MSZZ
An inpatient with known metastatic thyroid cancer develops new focal pain and swelling in the arm; to evaluate for radiotracer-avid metastatic disease versus inflammatory process, a planar nuclear medicine study using iodine-123 is performed to capture single-plane images of the upper extremity following administration of the appropriate radionuclide. Typical codes: CW1MFZZ

Related Codes

CW10-ABDOMEN-PLANAR-IMAGING

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

CW11-ABDOMEN-AND-PELVIS-PLANAR-IMAGING

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

CW13-CHEST-PLANAR-IMAGING

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

CW14-CHEST-AND-ABDOMEN-PLANAR

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

CW16-CHEST-AND-NECK-PLANAR-IMAGING

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

CW1B-HEAD-AND-NECK-PLANAR-IMAGING

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

CW1D-LOWER-EXTREMITY-PLANAR-IMAGING

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

CW1J-PELVIC-REGION-PLANAR-IMAGING

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

CW1N-WHOLE-BODY-PLANAR-IMAGING

ICD-10-PCS Code For Whole Body: Procedure Code Group Overview

CW1Y-ANATOMICAL-REGIONS-PLANAR-IMAGING

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

Showing 1–10 of 11

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

7 rows

ICD-10-PCS Code	Description
CW1M1ZZ	Planar Nuclear Medicine Imaging of Upper Extremity using Technetium 99m (Tc-99m)
CW1MDZZ	Planar Nuclear Medicine Imaging of Upper Extremity using Indium 111 (In-111)
CW1MFZZ	Planar Nuclear Medicine Imaging of Upper Extremity using Iodine 123 (I-123)
CW1MGZZ	Planar Nuclear Medicine Imaging of Upper Extremity using Iodine 131 (I-131)
CW1MLZZ	Planar Nuclear Medicine Imaging of Upper Extremity using Gallium 67 (Ga-67)
CW1MSZZ	Planar Nuclear Medicine Imaging of Upper Extremity using Thallium 201 (Tl-201)
CW1MYZZ	Planar Nuclear Medicine Imaging of Upper Extremity using Other Radionuclide

Typical Clinical Scenarios

An elderly patient is admitted with progressive, unexplained swelling and focal pain of the forearm and hand after failed conservative outpatient studies; inpatient assessment includes evaluation for osteomyelitis or focal infection when radiographs are inconclusive, and a planar nuclear medicine study is performed after IV administration of a technetium-labeled radiopharmaceutical to localize increased uptake in the upper extremity. Typical codes: CW1M1ZZ
A middle-aged patient presents to the hospital with suspected occult soft-tissue inflammation of the shoulder and upper arm after trauma, where MRI is contraindicated due to a pacemaker; a single-plane nuclear medicine scan using thallium is ordered inpatient to assess perfusion and inflammatory activity in the affected upper extremity. Typical codes: CW1MSZZ
An inpatient with known metastatic thyroid cancer develops new focal pain and swelling in the arm; to evaluate for radiotracer-avid metastatic disease versus inflammatory process, a planar nuclear medicine study using iodine-123 is performed to capture single-plane images of the upper extremity following administration of the appropriate radionuclide. Typical codes: CW1MFZZ

Related Codes

CW10-ABDOMEN-PLANAR-IMAGING

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

CW11-ABDOMEN-AND-PELVIS-PLANAR-IMAGING

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

CW13-CHEST-PLANAR-IMAGING

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

CW14-CHEST-AND-ABDOMEN-PLANAR

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

CW16-CHEST-AND-NECK-PLANAR-IMAGING

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

CW1B-HEAD-AND-NECK-PLANAR-IMAGING

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

CW1D-LOWER-EXTREMITY-PLANAR-IMAGING

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

CW1J-PELVIC-REGION-PLANAR-IMAGING

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

CW1N-WHOLE-BODY-PLANAR-IMAGING

ICD-10-PCS Code For Whole Body: Procedure Code Group Overview

CW1Y-ANATOMICAL-REGIONS-PLANAR-IMAGING

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

Showing 1–10 of 11

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 Planar 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 Planar 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 CW1M?

What is the purpose of coding procedures under CW1M for inpatient documentation?

Which ICD-10-PCS codes specify the radionuclide used for upper extremity planar imaging?

What are the code attributes associated with the CW1M group?

How does CW1M coding affect reimbursement considerations?

References

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

Which procedures are included in the ICD-10-PCS code group CW1M?

What is the purpose of coding procedures under CW1M for inpatient documentation?

Which ICD-10-PCS codes specify the radionuclide used for upper extremity planar imaging?

What are the code attributes associated with the CW1M group?

How does CW1M coding affect reimbursement considerations?

References