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 BW1C includes procedures performed to visualize lower extremity anatomical structures using real-time fluoroscopic imaging. These ICD-10-PCS codes are used for inpatient documentation when continuous fluoroscopic visualization of the lower extremity is performed for diagnostic evaluation or procedural guidance. Accurate coding within the ICD-10-PCS BW1C 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 Fluoroscopy Procedure Overview

This procedure group covers real-time imaging procedures of the lower extremity using external ionizing radiation displayed on a fluorescent screen and optionally stored by digital or analog means. The procedures target anatomical regions of the lower extremity and involve continuous fluoroscopic visualization to assist diagnosis or intra-procedural guidance. Accurate ICD-10-PCS coding of these fluoroscopy procedures ensures inpatient records reflect the imaging performed and supports correct case mix and payment.

Code Attributes

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

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
B	Section	Imaging
W	Body System	Anatomical Regions
1	Operation	Fluoroscopy
C	Body Part	Lower Extremity

When to Use

Use a code from this group when continuous fluoroscopic imaging of the lower extremity is performed during inpatient care for diagnosis or to guide a procedure. Select the specific code when documentation indicates fluoroscopy as the operation performed on the lower extremity anatomical region.

ICD-10-PCS Codes

4 rows

ICD-10-PCS Code	Description
BW1C0ZZ	Fluoroscopy of Lower Extremity using High Osmolar Contrast
BW1C1ZZ	Fluoroscopy of Lower Extremity using Low Osmolar Contrast
BW1CYZZ	Fluoroscopy of Lower Extremity using Other Contrast
BW1CZZZ	Fluoroscopy of Lower Extremity

Typical Clinical Scenarios

An elderly patient is admitted with acute ischemic rest pain and suspected peripheral arterial disease of the calf and foot. During endovascular angiography and possible angioplasty of a lower extremity arterial segment, continuous fluoroscopic guidance is used to visualize catheter and wire position and to assess lesion crossing and balloon deployment; low osmolar intravascular contrast is administered for vascular opacification. A fluoroscopic procedure code reflecting lower extremity imaging with low osmolar contrast is selected. Typical codes: BW1C1ZZ
A middle-aged patient is scheduled for elective evaluation of chronic mechanical knee pain after prior ligament repair to assess hardware position and alignment. In the inpatient setting for planned imaging and possible procedural planning, continuous fluoroscopic imaging of the lower extremity is performed to visualize joint motion and implant positioning; no contrast is used. The appropriate fluoroscopy code without contrast is used to document the imaging performed. Typical codes: BW1CZZZ
A patient presents with suspected postoperative deep wound infection and suspected arteriovenous fistula formation after recent lower-extremity vascular surgery; during inpatient workup, fluoroscopic assessment of the operative site with contrast injection is performed to delineate anatomy and identify any abnormal communications. Because an injected agent other than the standard high- or low-osmolar vascular contrasts is used (for example a specialized contrast or combination), the fluoroscopy code for other contrast is selected. Typical codes: BW1CYZZ

Related Codes

BW11-ABDOMEN-AND-PELVIS-FLUOROSCOPY

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

BW19-HEAD-AND-NECK-FLUOROSCOPY

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

BW1J-UPPER-EXTREMITY-FLUOROSCOPY

ICD-10-PCS Code For Upper Extremity: 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

4 rows

ICD-10-PCS Code	Description
BW1C0ZZ	Fluoroscopy of Lower Extremity using High Osmolar Contrast
BW1C1ZZ	Fluoroscopy of Lower Extremity using Low Osmolar Contrast
BW1CYZZ	Fluoroscopy of Lower Extremity using Other Contrast
BW1CZZZ	Fluoroscopy of Lower Extremity

Typical Clinical Scenarios

An elderly patient is admitted with acute ischemic rest pain and suspected peripheral arterial disease of the calf and foot. During endovascular angiography and possible angioplasty of a lower extremity arterial segment, continuous fluoroscopic guidance is used to visualize catheter and wire position and to assess lesion crossing and balloon deployment; low osmolar intravascular contrast is administered for vascular opacification. A fluoroscopic procedure code reflecting lower extremity imaging with low osmolar contrast is selected. Typical codes: BW1C1ZZ
A middle-aged patient is scheduled for elective evaluation of chronic mechanical knee pain after prior ligament repair to assess hardware position and alignment. In the inpatient setting for planned imaging and possible procedural planning, continuous fluoroscopic imaging of the lower extremity is performed to visualize joint motion and implant positioning; no contrast is used. The appropriate fluoroscopy code without contrast is used to document the imaging performed. Typical codes: BW1CZZZ
A patient presents with suspected postoperative deep wound infection and suspected arteriovenous fistula formation after recent lower-extremity vascular surgery; during inpatient workup, fluoroscopic assessment of the operative site with contrast injection is performed to delineate anatomy and identify any abnormal communications. Because an injected agent other than the standard high- or low-osmolar vascular contrasts is used (for example a specialized contrast or combination), the fluoroscopy code for other contrast is selected. Typical codes: BW1CYZZ

Related Codes

BW11-ABDOMEN-AND-PELVIS-FLUOROSCOPY

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

BW19-HEAD-AND-NECK-FLUOROSCOPY

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

BW1J-UPPER-EXTREMITY-FLUOROSCOPY

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

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

Lower Extremity Fluoroscopy 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 Fluoroscopy Procedure Overview

Code Attributes

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

Which procedures are included in the BW1C code group?

What is the clinical purpose of procedures coded to BW1C?

In which ICD-10-PCS section and body system is BW1C assigned?

How does accurate coding within BW1C affect inpatient documentation and payment?

Are there related DRGs listed for the BW1C code group?

References

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

Which procedures are included in the BW1C code group?

What is the clinical purpose of procedures coded to BW1C?

In which ICD-10-PCS section and body system is BW1C assigned?

How does accurate coding within BW1C affect inpatient documentation and payment?

Are there related DRGs listed for the BW1C code group?

References