03UN3KZ ICD-10-PCS Code: Supplement Left External Carotid Artery with Nonautologous Tissue Substitute, Percutaneous Approach
Supplement L Ext Carotid with Nonaut Sub, Perc Approach
Axis Breakdown
Every ICD-10-PCS code is exactly seven characters, one per axis. Each character's meaning is defined by its position in the code.
| Position | Value | Meaning |
|---|---|---|
| 1 | Section0 | Medical and Surgical |
| 2 | Body System3 | Upper Arteries |
| 3 | Root OperationU | Supplement Putting in or on biological or synthetic material that physically reinforces and/or augments the function of a portion of a body part |
| 4 | Body PartN | External Carotid Artery, Left |
| 5 | Approach3 | Percutaneous |
| 6 | DeviceK | Nonautologous Tissue Substitute |
| 7 | QualifierZ | No Qualifier |
MS-DRG Grouper Relationships (FY2026)
Potential MS-DRG participation — not a DRG assignment.
The MS-DRG grouper treats this as an operating room procedure. It appears in the surgical logic of 3 MS-DRGs:
From the CMS MS-DRG Definitions Manual, Appendix E. Actual DRG assignment depends on the complete claim.
Related Codes
Same operation — other Body Part
Same table and root operation, differing only in the body part character.
03UJ3KZ — Supplement Left Common Carotid Artery with Nonautologous Tissue Substitute, Percutaneous Approach, 03UK3KZ — Supplement Right Internal Carotid Artery with Nonautologous Tissue Substitute, Percutaneous Approach, 03UL3KZ — Supplement Left Internal Carotid Artery with Nonautologous Tissue Substitute, Percutaneous Approach, 03UM3KZ — Supplement Right External Carotid Artery with Nonautologous Tissue Substitute, Percutaneous Approach, 03UP3KZ — Supplement Right Vertebral Artery with Nonautologous Tissue Substitute, Percutaneous Approach, 03UQ3KZ — Supplement Left Vertebral Artery with Nonautologous Tissue Substitute, Percutaneous Approach, 03UR3KZ — Supplement Face Artery with Nonautologous Tissue Substitute, Percutaneous Approach, 03US3KZ — Supplement Right Temporal Artery with Nonautologous Tissue Substitute, Percutaneous Approach, +21 more
Same operation — other Approach
Same table and root operation, differing only in the approach character.
03UN0KZ — Supplement Left External Carotid Artery with Nonautologous Tissue Substitute, Open Approach, 03UN4KZ — Supplement Left External Carotid Artery with Nonautologous Tissue Substitute, Percutaneous Endoscopic Approach
Same operation — other Device
Same table and root operation, differing only in the device character.
03UN37Z — Supplement Left External Carotid Artery with Autologous Tissue Substitute, Percutaneous Approach, 03UN3JZ — Supplement Left External Carotid Artery with Synthetic Substitute, Percutaneous Approach
Same procedure category (CCSR), other tables
AHRQ's Clinical Classifications Software Refined groups these ICD-10-PCS procedures with this one under Carotid endarterectomy and stenting (Cardiovascular Procedures); listed here are the members in other PCS tables. Source: Clinical Classifications Software Refined (CCSR), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, November 2025.
03RM0KZ — Replacement of Right External Carotid Artery with Nonautologous Tissue Substitute, Open Approach, 03RM47Z — Replacement of Right External Carotid Artery with Autologous Tissue Substitute, Percutaneous Endoscopic Approach, 03RM4JZ — Replacement of Right External Carotid Artery with Synthetic Substitute, Percutaneous Endoscopic Approach, 03RM4KZ — Replacement of Right External Carotid Artery with Nonautologous Tissue Substitute, Percutaneous Endoscopic Approach, 03RN07Z — Replacement of Left External Carotid Artery with Autologous Tissue Substitute, Open Approach, 03RN0JZ — Replacement of Left External Carotid Artery with Synthetic Substitute, Open Approach, 03RN0KZ — Replacement of Left External Carotid Artery with Nonautologous Tissue Substitute, Open Approach, 03RN47Z — Replacement of Left External Carotid Artery with Autologous Tissue Substitute, Percutaneous Endoscopic Approach, 03RN4JZ — Replacement of Left External Carotid Artery with Synthetic Substitute, Percutaneous Endoscopic Approach, 03RN4KZ — Replacement of Left External Carotid Artery with Nonautologous Tissue Substitute, Percutaneous Endoscopic Approach, 03VH0BZ — Restriction of Right Common Carotid Artery with Bioactive Intraluminal Device, Open Approach, 03VH0CZ — Restriction of Right Common Carotid Artery with Extraluminal Device, Open Approach, 03VH0DZ — Restriction of Right Common Carotid Artery with Intraluminal Device, Open Approach, 03VH0HZ — Restriction of Right Common Carotid Artery with Intraluminal Device, Flow Diverter, Open Approach, 03VH0ZZ — Restriction of Right Common Carotid Artery, Open Approach, 03VH3BZ — Restriction of Right Common Carotid Artery with Bioactive Intraluminal Device, Percutaneous Approach, 03VH3CZ — Restriction of Right Common Carotid Artery with Extraluminal Device, Percutaneous Approach, 03VH3DZ — Restriction of Right Common Carotid Artery with Intraluminal Device, Percutaneous Approach, 03VH3HZ — Restriction of Right Common Carotid Artery with Intraluminal Device, Flow Diverter, Percutaneous Approach, 03VH3ZZ — Restriction of Right Common Carotid Artery, Percutaneous Approach, +395 more
Contextual Map
Every relationship of 03UN3KZ in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.
Run 03UN3KZ with these 5 related codes in Claim Check
PCS table
- 03U[PCS table]— CMS ICD-10-PCS tables
- Medical and Surgical — Section: Medical and Surgical[Section]: “Medical and Surgical”— CMS ICD-10-PCS tables
- Upper Arteries — Body System: Upper Arteries[Body System]: “Upper Arteries”— CMS ICD-10-PCS tables
- Supplement — Operation: Supplement[Operation]: “Supplement”— CMS ICD-10-PCS tables
MS-DRG participation
- DRG 252 — OTHER VASCULAR PROCEDURES WITH MCC[MS-DRG]: “OTHER VASCULAR PROCEDURES WITH MCC — Other Vascular Procedures (MDC 05)”— CMS MS-DRG Definitions Manual (Appendix E) · FY2026
- DRG 253 — OTHER VASCULAR PROCEDURES WITH CC[MS-DRG]: “OTHER VASCULAR PROCEDURES WITH CC — Other Vascular Procedures (MDC 05)”— CMS MS-DRG Definitions Manual (Appendix E) · FY2026
- DRG 254 — OTHER VASCULAR PROCEDURES WITHOUT CC/MCC[MS-DRG]: “OTHER VASCULAR PROCEDURES WITHOUT CC/MCC — Other Vascular Procedures (MDC 05)”— CMS MS-DRG Definitions Manual (Appendix E) · FY2026
Clinical classification (CCSR)
- CAR006 — Carotid endarterectomy and stenting[CCSR category]: “Carotid endarterectomy and stenting — Cardiovascular Procedures”— AHRQ CCSR for ICD-10-PCS Procedures (HCUP) · v2026.1
MDC crossing · diagnoses (1844)
- MDC 05 — Diseases and Disorders of the Circulatory System[MDC crossing]: “Diseases and Disorders of the Circulatory System — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs.”— CMS MS-DRG Definitions Manual · FY2026
- A36.81 — Diphtheritic cardiomyopathy[Same-MDC diagnosis]: “Diphtheritic cardiomyopathy — grouped in MDC 05, the diagnosis side of this code's crossing.”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
- A39.50 — Meningococcal carditis, unspecified[Same-MDC diagnosis]: “Meningococcal carditis, unspecified — grouped in MDC 05, the diagnosis side of this code's crossing.”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
- A39.51 — Meningococcal endocarditis[Same-MDC diagnosis]: “Meningococcal endocarditis — grouped in MDC 05, the diagnosis side of this code's crossing.”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
- A39.52 — Meningococcal myocarditis[Same-MDC diagnosis]: “Meningococcal myocarditis — grouped in MDC 05, the diagnosis side of this code's crossing.”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
- A39.53 — Meningococcal pericarditis[Same-MDC diagnosis]: “Meningococcal pericarditis — grouped in MDC 05, the diagnosis side of this code's crossing.”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
- and 1839 more
Nearest codes
- 03U03KZ — Supplement Right Internal Mammary Artery with Nonautologous Tissue Substitute, Percutaneous Approach[One axis away]— CMS ICD-10-PCS tables
- 03U13KZ — Supplement Left Internal Mammary Artery with Nonautologous Tissue Substitute, Percutaneous Approach[One axis away]— CMS ICD-10-PCS tables
- 03U23KZ — Supplement Innominate Artery with Nonautologous Tissue Substitute, Percutaneous Approach[One axis away]— CMS ICD-10-PCS tables
- 03U33KZ — Supplement Right Subclavian Artery with Nonautologous Tissue Substitute, Percutaneous Approach[One axis away]— CMS ICD-10-PCS tables
- 03U43KZ — Supplement Left Subclavian Artery with Nonautologous Tissue Substitute, Percutaneous Approach[One axis away]— CMS ICD-10-PCS tables
- 03U53KZ — Supplement Right Axillary Artery with Nonautologous Tissue Substitute, Percutaneous Approach[One axis away]— CMS ICD-10-PCS tables
- 03U63KZ — Supplement Left Axillary Artery with Nonautologous Tissue Substitute, Percutaneous Approach[One axis away]— CMS ICD-10-PCS tables
- 03U73KZ — Supplement Right Brachial Artery with Nonautologous Tissue Substitute, Percutaneous Approach[One axis away]— CMS ICD-10-PCS tables
Change history
No changes recorded for this code. This ledger tracks additions, deletions and description changes from FY2026 (April) onward. Note changes are not tracked.
Read from: CMS ICD-10-PCS code tables, index and definitions — FY2026 (April); CMS MS-DRG Definitions Manual (incl. Appendix B diagnosis index, Appendix C CC/MCC list, Appendix E procedure index) and IPPS Final Rule tables — v43; AHRQ HCUP Clinical Classifications Software Refined for ICD-10-PCS Procedures (hcup-us.ahrq.gov/toolssoftware/ccsr/PRCCSR_v2026-1.zip) — v2026.1. All data sources · How to read the labels