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

The International Classification of Diseases, Tenth Revision, Procedure Coding System (ICD-10-PCS) code group CW1D includes procedures performed to capture single‑plane nuclear medicine images following introduction of radioactive materials in the lower extremity. These ICD-10-PCS codes are used for inpatient documentation when planar nuclear medicine imaging of the lower extremity is performed for diagnostic evaluation or monitoring. Accurate coding within the ICD-10-PCS CW1D group is essential for proper inpatient reimbursement, as it captures the imaging procedure performed and supports clinical documentation accuracy.

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Lower Extremity Planar Nuclear Medicine Imaging Procedure Overview

This code group includes procedures that introduce radioactive materials to capture single‑plane images of the lower extremity by detecting emitted radiation. These procedures target the anatomical regions of the lower extremity and are performed under the Nuclear Medicine section of ICD-10-PCS. Accurate coding ensures the inpatient record reflects the diagnostic imaging performed and supports appropriate inpatient reimbursement. Proper specificity for the body part and imaging technique affects case mix and payment.

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
D	Body Part	Lower Extremity

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

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Lower 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
D	Body Part	Lower Extremity

When to Use

Use codes from this group when a patient undergoes planar nuclear medicine imaging of the lower extremity following administration of a radiopharmaceutical. Assign these codes for inpatient documentation when the procedure is performed to evaluate or monitor lower extremity conditions using single‑plane nuclear imaging.

ICD-10-PCS Codes

7 rows

ICD-10-PCS Code	Description
CW1D1ZZ	Planar Nuclear Medicine Imaging of Lower Extremity using Technetium 99m (Tc-99m)
CW1DDZZ	Planar Nuclear Medicine Imaging of Lower Extremity using Indium 111 (In-111)
CW1DFZZ	Planar Nuclear Medicine Imaging of Lower Extremity using Iodine 123 (I-123)
CW1DGZZ	Planar Nuclear Medicine Imaging of Lower Extremity using Iodine 131 (I-131)
CW1DLZZ	Planar Nuclear Medicine Imaging of Lower Extremity using Gallium 67 (Ga-67)
CW1DSZZ	Planar Nuclear Medicine Imaging of Lower Extremity using Thallium 201 (Tl-201)
CW1DYZZ	Planar Nuclear Medicine Imaging of Lower Extremity using Other Radionuclide

Typical Clinical Scenarios

An elderly patient admitted from the emergency department with acute unilateral lower extremity swelling, erythema, and increased pain suspicious for deep vein thrombosis; inpatient nuclear medicine performs planar venous imaging after injection of a radiopharmaceutical to assess venous perfusion and thrombus burden in the affected lower extremity. Typical codes: CW1D1ZZ, CW1DDZZ
A hospitalized diabetic patient with chronic, nonhealing foot ulcer and suspected osteomyelitis undergoes planar nuclear medicine bone imaging of the lower extremity to localize increased radiotracer uptake and help differentiate soft tissue infection from bone involvement as part of inpatient diagnostic workup. Typical codes: CW1DFZZ, CW1DLZZ
A post-operative patient in the inpatient ward with persistent postoperative bleeding and concern for radionuclide-labeled tissue perfusion abnormality of the lower extremity receives planar nuclear medicine imaging after administration of a radiopharmaceutical to evaluate regional perfusion and guide further management. Typical codes: CW1DGZZ, CW1DSZZ

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

CW1J-PELVIC-REGION-PLANAR-IMAGING

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

CW1M-UPPER-EXTREMITY-PLANAR-IMAGING

ICD-10-PCS Code For Upper Extremity: 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
CW1D1ZZ	Planar Nuclear Medicine Imaging of Lower Extremity using Technetium 99m (Tc-99m)
CW1DDZZ	Planar Nuclear Medicine Imaging of Lower Extremity using Indium 111 (In-111)
CW1DFZZ	Planar Nuclear Medicine Imaging of Lower Extremity using Iodine 123 (I-123)
CW1DGZZ	Planar Nuclear Medicine Imaging of Lower Extremity using Iodine 131 (I-131)
CW1DLZZ	Planar Nuclear Medicine Imaging of Lower Extremity using Gallium 67 (Ga-67)
CW1DSZZ	Planar Nuclear Medicine Imaging of Lower Extremity using Thallium 201 (Tl-201)
CW1DYZZ	Planar Nuclear Medicine Imaging of Lower Extremity using Other Radionuclide

Typical Clinical Scenarios

An elderly patient admitted from the emergency department with acute unilateral lower extremity swelling, erythema, and increased pain suspicious for deep vein thrombosis; inpatient nuclear medicine performs planar venous imaging after injection of a radiopharmaceutical to assess venous perfusion and thrombus burden in the affected lower extremity. Typical codes: CW1D1ZZ, CW1DDZZ
A hospitalized diabetic patient with chronic, nonhealing foot ulcer and suspected osteomyelitis undergoes planar nuclear medicine bone imaging of the lower extremity to localize increased radiotracer uptake and help differentiate soft tissue infection from bone involvement as part of inpatient diagnostic workup. Typical codes: CW1DFZZ, CW1DLZZ
A post-operative patient in the inpatient ward with persistent postoperative bleeding and concern for radionuclide-labeled tissue perfusion abnormality of the lower extremity receives planar nuclear medicine imaging after administration of a radiopharmaceutical to evaluate regional perfusion and guide further management. Typical codes: CW1DGZZ, CW1DSZZ

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

CW1J-PELVIC-REGION-PLANAR-IMAGING

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

CW1M-UPPER-EXTREMITY-PLANAR-IMAGING

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

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

Lower Extremity Planar Nuclear Medicine Imaging Procedure Overview

Code Attributes

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

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

Lower Extremity Planar Nuclear Medicine Imaging Procedure Overview

Code Attributes

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

Which ICD-10-PCS section and operation describe the CW1D code group?

What body part and body system are represented in the CW1D codes?

How do the specific codes within CW1D differ from each other?

Why is accurate coding within the CW1D group important for inpatient documentation?

What imaging technique is captured by the CW1D code group?

References

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

Which ICD-10-PCS section and operation describe the CW1D code group?

What body part and body system are represented in the CW1D codes?

How do the specific codes within CW1D differ from each other?

Why is accurate coding within the CW1D group important for inpatient documentation?

What imaging technique is captured by the CW1D code group?

References