Clinical Context
A 72-year-old man with a history of peripheral arterial disease, hypertension, and smoking presents with worsening right lower-extremity claudication and diminished ankle-brachial index. Noninvasive testing and CT angiography show a significant stenosis in the right common iliac artery and a separate chronic total occlusion of the ipsilateral external iliac artery. The vascular interventional team plans an initial iliac revascularization service with stent placement to treat the primary lesion. During the same operative session, after establishing vascular access and performing angiography, the interventionalist performs balloon angioplasty of the additional complex occluded iliac vessel to restore inline flow.
The clinical workflow includes pre-procedure evaluation and informed consent, vascular access (percutaneous or open), diagnostic angiography, lesion crossing techniques for the occluded segment, balloon angioplasty of the additional complex lesion, adjunctive imaging (fluoroscopy and digital subtraction angiography), hemostasis, and post-procedure monitoring in a recovery area or vascular observation unit. Typical personnel include an interventional vascular surgeon or interventional radiologist, technologists, nursing staff, and anesthesia as required. Typical sites of service are hospital inpatient, hospital outpatient (ambulatory surgery center within hospital), or freestanding ambulatory surgical center, depending on patient comorbidities and institutional capabilities.
Coding Specifications
| Modifier | Description | When to Use |
|---|
25 | Significant, separately identifiable evaluation and management service by the same physician on the same day of the procedure | Use when a distinct E/M visit is provided on the same day as the iliac revascularization and the documentation supports a separate service. |
| 59 | Distinct procedural service | Use when another procedure during the same session is separate and not normally bundled; may be applicable if bundling edits would otherwise combine services, though use with caution per payer guidance.
| 78 | Unplanned return to the operating/procedure room by the same physician following initial procedure for a related procedure during the postoperative period | Use if the patient returns to the OR/procedure room for a related issue during the global period.
| 79 | Unrelated procedure or service by the same physician during the postoperative period | Use if an unrelated procedure is performed during the global period for a condition not related to the index procedure.
| GA | Waiver of liability statement on file (Advanced Beneficiary Notice) | Use when Medicare ABN is obtained due to expected noncoverage of inserted devices or services.
| LT | Left side | Use to indicate the procedure was performed on the left iliac arterial territory when laterality is required by payer.
| RT | Right side | Use to indicate the procedure was performed on the right iliac arterial territory when laterality is required by payer.
| CS | Cost-sharing reduction | Use when applicable for beneficiaries with cost-sharing reductions (payer-specific).
| PO | Ordering/Referring Provider Not Practicing in Hospital/ASC Per CMS (not standard; some payers use PO-like codes) | Use per payer policy when an ordering/referring provider indicator is required (confirm local payer usage).
| 26 | Professional component | Use when reporting only the professional interpretation component of imaging if the facility bills the technical component separately.
| Taxonomy Code | Specialty | Notes |
|---|
208100000X | Vascular Surgery | Common performing specialty for iliac revascularization and complex iliac angioplasty. |
| 2080S0122X | Interventional Cardiology | Performs endovascular peripheral interventions in some centers.
| 207RX0400X | Interventional Radiology | Frequently performs percutaneous iliac interventions and imaging-guided procedures.
| 207L00000X | Diagnostic Radiology | Provides imaging support and may perform image-guided vascular procedures.
| 2086S0122X | General Surgery — Vascular | General/vascular surgeons who perform endovascular iliac procedures.
Related Diagnoses
| ICD-10 Code | Description | Clinical Relevance |
|---|
I70.209 | Unspecified atherosclerosis of native arteries of the extremities, unspecified extremity | Common underlying cause of iliac stenosis or occlusion leading to need for angioplasty. |
| I74.3 | Embolism and thrombosis of arteries of lower extremities | Acute embolic or thrombotic events can present with limb ischemia requiring iliac intervention.
| I70.33 | Atherosclerosis of autologous vein bypass graft of the leg with unspecified complication | Graft lesions proximal in the iliac territory may require endovascular treatment.
| I70.201 | Atherosclerosis of native arteries of the extremities, right leg | Laterality-specific code for atherosclerotic disease when right-sided iliac intervention is performed.
| I70.202 | Atherosclerosis of native arteries of the extremities, left leg | Laterality-specific code for left-sided iliac disease.
| I70.23 | Atherosclerosis of native arteries of the extremities with ulceration | Chronic limb-threatening ischemia presentations that may include iliac lesions requiring revascularization.
| I70.22 | Atherosclerosis of native arteries of the extremities with rest pain | Critical limb ischemia symptom code associated with proximal iliac occlusive disease.
| I96 | Gangrene, not elsewhere classified | Severe ischemic complications from occlusive iliac disease necessitating urgent revascularization.
Related CPT Codes
| CPT Code | Description | Relationship to This Procedure |
|---|
37254 | Transcatheter placement of intravascular stent(s), iliac artery, unilateral, with angioplasty when performed; initial vessel | Often reported for the primary iliac stent placement during the same session; 37257 is reported for angioplasty of an additional complex occluded iliac vessel at the same session. |
| 37258 | Transcatheter placement of intravascular stent(s), iliac artery, bilateral, with angioplasty when performed; initial vessel(s) | Used when bilateral iliac stenting is performed; may be part of the overall iliac revascularization strategy.
| 36011 | Introduction of needle or intracatheter, arterial, for diagnostic purposes, without radiological supervision and interpretation, not elsewhere classified | Represents arterial access techniques; diagnostic arterial access and catheter placement are components of iliac interventions and may be reported when separately payable per payer rules.
| 93580 | Catheter introduction for diagnostic angiography, peripheral arterial, with imaging supervision and interpretation; iliac/celiac/mesenteric or extremity vessels | Represents diagnostic peripheral angiography of the iliac vessels that commonly precedes therapeutic iliac angioplasty/stenting.
| 37246 | Revascularization, endovascular, open or percutaneous, including angioplasty, atherectomy, and/or stent, any vascular family, initial vessel | May be used in some coding scenarios for peripheral endovascular revascularization when code sets are grouped; selection depends on exact vessel and payer guidance.
| 76937 | Ultrasound guidance for vascular access | Used when ultrasound guidance is employed for vascular access during percutaneous iliac interventions.
| 36415 | Collection of venous blood by venipuncture | Represents common ancillary services for pre- and intra-procedural labs; billed separately when applicable.
| 99024 | Postoperative follow-up visit, during a global period, related to the original procedure | Used for routine post-op visits during the global period; documentation must support routine nature.
| 92973 | Transcatheter therapy, not otherwise specified (for noncoronary vascular beds) | Rarely used; include only per coding guidance when no specific code applies.
| 77012 | Computed tomography guidance for diagnostic, surveillance, or therapeutic procedures (list separately in addition to primary procedure) | Used when CT guidance is used for lesion localization or crossing adjunctively during complex iliac interventions.