ICD-10-PCS Code For Subclavian Artery, Left: Procedure Code Group Overview

The International Classification of Diseases, Tenth Revision, Procedure Coding System (ICD-10-PCS) code group 03L4 includes procedures performed to occlude the lumen of the left subclavian artery. These ICD-10-PCS codes are used for inpatient documentation when complete closure of the left subclavian artery is performed to stop blood flow for therapeutic or diagnostic purposes. Accurate coding within the ICD-10-PCS 03L4 group is essential for proper inpatient reimbursement, as it captures the procedure performed and supports clinical documentation accuracy.

Customize your policy alerts

Sign up for ICD-10-PCS Code For Subclavian Artery, Left: Procedure Code Group Overview policy alerts

Get alerted when relevant policies change without checking for updates manually.

Monitor payer policy activity

Receive email alerts as soon as relevant payer policies are published or updated.

Subclavian Artery, Left Occlusion Procedure Overview

This procedure group includes complete closure of the lumen of the left subclavian artery and targets the upper arterial system supplying the left upper extremity. Procedures in this group involve intentionally occluding the vessel lumen to stop blood flow for therapeutic or diagnostic reasons. Accurate ICD-10-PCS coding is important for inpatient reimbursement because it documents the specific arterial target and the occlusion operation performed, which affects case mix and payment determination.

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
0	Section	Medical and Surgical
3	Body System	Upper Arteries
L	Operation	Occlusion
4	Body Part	Subclavian Artery, Left

Explore openpayer tools

View all tools

ICD-10-PCS Code For Subclavian Artery, Left: Procedure Code Group Overview

Customize your policy alerts

Sign up for ICD-10-PCS Code For Subclavian Artery, Left: Procedure Code Group Overview policy alerts

Get alerted when relevant policies change without checking for updates manually.

Monitor payer policy activity

Receive email alerts as soon as relevant payer policies are published or updated.

Subclavian Artery, Left Occlusion Procedure Overview

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
0	Section	Medical and Surgical
3	Body System	Upper Arteries
L	Operation	Occlusion
4	Body Part	Subclavian Artery, Left

When to Use

Use a code from this group when the clinical procedure intentionally and completely occludes the lumen of the left subclavian artery. Typical indications include stopping hemorrhage, excluding an aneurysm or arteriovenous fistula, or preparing a vessel for other interventions where permanent closure is required.

ICD-10-PCS Codes

9 rows

ICD-10-PCS Code	Description
03L40CZ	Occlusion of Left Subclavian Artery with Extraluminal Device, Open Approach
03L40DZ	Occlusion of Left Subclavian Artery with Intraluminal Device, Open Approach
03L40ZZ	Occlusion of Left Subclavian Artery, Open Approach
03L43CZ	Occlusion of Left Subclavian Artery with Extraluminal Device, Percutaneous Approach
03L43DZ	Occlusion of Left Subclavian Artery with Intraluminal Device, Percutaneous Approach
03L43ZZ	Occlusion of Left Subclavian Artery, Percutaneous Approach
03L44CZ	Occlusion of Left Subclavian Artery with Extraluminal Device, Percutaneous Endoscopic Approach
03L44DZ	Occlusion of Left Subclavian Artery with Intraluminal Device, Percutaneous Endoscopic Approach
03L44ZZ	Occlusion of Left Subclavian Artery, Percutaneous Endoscopic Approach

DRG Codes

13 rows

DRG Code	Description
163	Major Chest Procedures with MCC
164	Major Chest Procedures with CC
165	Major Chest Procedures without CC/MCC
209	Complex Aortic Arch Procedures
270	Other Major Cardiovascular Procedures with MCC
271	Other Major Cardiovascular Procedures with CC
272	Other Major Cardiovascular Procedures without CC/MCC
326	Stomach, Esophageal and Duodenal Procedures with MCC
327	Stomach, Esophageal and Duodenal Procedures with CC
328	Stomach, Esophageal and Duodenal Procedures without CC/MCC

Showing 1–10 of 13

Typical Clinical Scenarios

An elderly patient presents emergently with massive left-sided shoulder and chest wall hemorrhage after a traumatic clavicular fracture with suspected injury to the left subclavian artery causing ongoing bleeding and hemodynamic instability; the patient is taken to the operating room for rapid control of hemorrhage by surgically occluding the injured left subclavian artery to stop flow and stabilize hemodynamics. Typical codes: 03L40ZZ, 03L40DZ
A middle-aged patient with a large symptomatic left subclavian arterial aneurysm identified on imaging during elective vascular surgery evaluation undergoes a planned endovascular exclusion procedure; the goal is permanent closure of the arterial lumen feeding the aneurysm via a percutaneous approach to prevent rupture or distal embolization. Typical codes: 03L43DZ, 03L43ZZ
A patient with a chronic left subclavian arteriovenous fistula after prior catheterization presents with high-output cardiac failure and progressive arm swelling; during an inpatient revision, the interventional team performs percutaneous endoscopic occlusion of the left subclavian artery supplying the fistula to eliminate abnormal flow and treat the complication. Typical codes: 03L44CZ, 03L44DZ

ICD-10-PCS Code For Internal Mammary Artery, Right: Procedure Code Group Overview

03L1-INTERNAL-MAMMARY-ARTERY-LEFT-OCCLUSION

ICD-10-PCS Code For Internal Mammary Artery Left: Procedure Code Group Overview

03L2-INNOMINATE-ARTERY-OCCLUSION

ICD-10-PCS Code For Innominate Artery: Procedure Code Group Overview

03L3-SUBCLAVIAN-ARTERY-OCCLUSION

ICD-10-PCS Code for Subclavian Artery, Right: Procedure Code Group Overview

03L5-AXILLARY-ARTERY-RIGHT-OCCLUSION

ICD-10-PCS Code For Axillary Artery Right: Procedure Code Group Overview

03L6-LEFT-AXILLARY-ARTERY-OCCLUSION

ICD-10-PCS Code For Axillary Artery, Left: Procedure Code Group Overview

03L7-BRACHIAL-ARTERY-RIGHT-OCCLUSION

ICD-10-PCS Code For Brachial Artery, Right: Procedure Code Group Overview

03L8-LEFT-BRACHIAL-ARTERY-OCCLUSION

ICD-10-PCS Code For Brachial Artery, Left: Procedure Code Group Overview

03L9-ULNAR-ARTERY-RIGHT-OCCLUSION

ICD-10-PCS Code For Ulnar Artery Right: Procedure Code Group Overview

03LA-LEFT-ULNAR-ARTERY-OCCLUSION

ICD-10-PCS Code For Ulnar Artery, Left: Procedure Code Group Overview

Showing 1–10 of 29

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.

Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.

Explore openpayer tools

View all tools

When to Use

ICD-10-PCS Codes

9 rows

ICD-10-PCS Code	Description
03L40CZ	Occlusion of Left Subclavian Artery with Extraluminal Device, Open Approach
03L40DZ	Occlusion of Left Subclavian Artery with Intraluminal Device, Open Approach
03L40ZZ	Occlusion of Left Subclavian Artery, Open Approach
03L43CZ	Occlusion of Left Subclavian Artery with Extraluminal Device, Percutaneous Approach
03L43DZ	Occlusion of Left Subclavian Artery with Intraluminal Device, Percutaneous Approach
03L43ZZ	Occlusion of Left Subclavian Artery, Percutaneous Approach
03L44CZ	Occlusion of Left Subclavian Artery with Extraluminal Device, Percutaneous Endoscopic Approach
03L44DZ	Occlusion of Left Subclavian Artery with Intraluminal Device, Percutaneous Endoscopic Approach
03L44ZZ	Occlusion of Left Subclavian Artery, Percutaneous Endoscopic Approach

DRG Codes

13 rows

DRG Code	Description
163	Major Chest Procedures with MCC
164	Major Chest Procedures with CC
165	Major Chest Procedures without CC/MCC
209	Complex Aortic Arch Procedures
270	Other Major Cardiovascular Procedures with MCC
271	Other Major Cardiovascular Procedures with CC
272	Other Major Cardiovascular Procedures without CC/MCC
326	Stomach, Esophageal and Duodenal Procedures with MCC
327	Stomach, Esophageal and Duodenal Procedures with CC
328	Stomach, Esophageal and Duodenal Procedures without CC/MCC

Showing 1–10 of 13

Typical Clinical Scenarios

An elderly patient presents emergently with massive left-sided shoulder and chest wall hemorrhage after a traumatic clavicular fracture with suspected injury to the left subclavian artery causing ongoing bleeding and hemodynamic instability; the patient is taken to the operating room for rapid control of hemorrhage by surgically occluding the injured left subclavian artery to stop flow and stabilize hemodynamics. Typical codes: 03L40ZZ, 03L40DZ
A middle-aged patient with a large symptomatic left subclavian arterial aneurysm identified on imaging during elective vascular surgery evaluation undergoes a planned endovascular exclusion procedure; the goal is permanent closure of the arterial lumen feeding the aneurysm via a percutaneous approach to prevent rupture or distal embolization. Typical codes: 03L43DZ, 03L43ZZ
A patient with a chronic left subclavian arteriovenous fistula after prior catheterization presents with high-output cardiac failure and progressive arm swelling; during an inpatient revision, the interventional team performs percutaneous endoscopic occlusion of the left subclavian artery supplying the fistula to eliminate abnormal flow and treat the complication. Typical codes: 03L44CZ, 03L44DZ

ICD-10-PCS Code For Internal Mammary Artery, Right: Procedure Code Group Overview

03L1-INTERNAL-MAMMARY-ARTERY-LEFT-OCCLUSION

ICD-10-PCS Code For Internal Mammary Artery Left: Procedure Code Group Overview

03L2-INNOMINATE-ARTERY-OCCLUSION

ICD-10-PCS Code For Innominate Artery: Procedure Code Group Overview

03L3-SUBCLAVIAN-ARTERY-OCCLUSION

ICD-10-PCS Code for Subclavian Artery, Right: Procedure Code Group Overview

03L5-AXILLARY-ARTERY-RIGHT-OCCLUSION

ICD-10-PCS Code For Axillary Artery Right: Procedure Code Group Overview

03L6-LEFT-AXILLARY-ARTERY-OCCLUSION

ICD-10-PCS Code For Axillary Artery, Left: Procedure Code Group Overview

03L7-BRACHIAL-ARTERY-RIGHT-OCCLUSION

ICD-10-PCS Code For Brachial Artery, Right: Procedure Code Group Overview

03L8-LEFT-BRACHIAL-ARTERY-OCCLUSION

ICD-10-PCS Code For Brachial Artery, Left: Procedure Code Group Overview

03L9-ULNAR-ARTERY-RIGHT-OCCLUSION

ICD-10-PCS Code For Ulnar Artery Right: Procedure Code Group Overview

03LA-LEFT-ULNAR-ARTERY-OCCLUSION

ICD-10-PCS Code For Ulnar Artery, Left: Procedure Code Group Overview

Showing 1–10 of 29

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.

OpenPayer

ICD-10-PCS Code For Subclavian Artery, Left: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Subclavian Artery, Left: Procedure Code Group Overview policy alerts

Subclavian Artery, Left Occlusion Procedure Overview

Code Attributes

OpenPayer

ICD-10-PCS Code For Subclavian Artery, Left: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Subclavian Artery, Left: Procedure Code Group Overview policy alerts

Subclavian Artery, Left Occlusion Procedure Overview

Code Attributes

When to Use

ICD-10-PCS Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

References

When to Use

ICD-10-PCS Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

References

ICD-10-PCS Code For Subclavian Artery, Left: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Subclavian Artery, Left: Procedure Code Group Overview policy alerts

Subclavian Artery, Left Occlusion Procedure Overview

Code Attributes

ICD-10-PCS Code For Subclavian Artery, Left: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Subclavian Artery, Left: Procedure Code Group Overview policy alerts

Subclavian Artery, Left Occlusion Procedure Overview

Code Attributes

When to Use

ICD-10-PCS Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which body system and operation does ICD-10-PCS code group 03L4 represent?

What specific body part is identified by the 03L4 procedure group?

What ICD-10-PCS codes are included in the 03L4 group and how are devices and approaches distinguished?

Why is accurate coding within ICD-10-PCS group 03L4 important for inpatient documentation?

Which DRG categories may be related when using codes from the 03L4 group?

References

When to Use

ICD-10-PCS Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which body system and operation does ICD-10-PCS code group 03L4 represent?

What specific body part is identified by the 03L4 procedure group?

What ICD-10-PCS codes are included in the 03L4 group and how are devices and approaches distinguished?

Why is accurate coding within ICD-10-PCS group 03L4 important for inpatient documentation?

Which DRG categories may be related when using codes from the 03L4 group?

References