Revascularization is the restoration of adequate blood flow to ischemic tissue through surgical or catheter-based (endovascular) intervention — performed when a vessel is stenotic (narrowed) or occluded (completely blocked). It is distinguished from reperfusion, which refers to the biological event of blood returning to tissue (often after acute ischemia), whereas revascularization is the deliberate procedural act that enables that return of flow. The underlying pathological mechanism driving the need for revascularization is typically atherosclerosis (ICD-10-CM: I70.x), in which progressive plaque deposition narrows or obstructs the arterial lumen, causing ischemia, claudication, rest pain, or tissue necrosis. Revascularization may be physiological in angiogenesis after exercise training (new collateral vessel formation) or pathological/therapeutic in the setting of chronic limb-threatening ischemia (CLTI) or coronary artery disease (CAD). Clinically relevant subtypes include percutaneous coronary intervention (PCI) for cardiac disease (ICD-10-CM: I25.10-I25.119), lower extremity endovascular revascularization (LER) for peripheral arterial disease (I70.2x-I70.7x), and surgical bypass grafting (CABG) for coronary or peripheral vessel disease. It is commonly confused with angioplasty — note the key difference: angioplasty is one specific technique used to achieve revascularization (balloon dilation of a stenosed vessel), while revascularization is the broader clinical goal that may also be achieved through stenting, atherectomy, lithotripsy, or bypass surgery.
Adjective-forming suffix — “pertaining to” or “of the nature of”
-ization
French/Latin -isation / -izatio
Noun-forming suffix — “the process or act of making” or “the state of becoming”
The word entered English in the 1940s as revascularization (noun), from Latin re- (“again”) + vasculum (“small vessel”) + the adjectival suffix -ar + the process-nominalizing suffix -ization — literally “the act of making small vessels again.” The root vasc- / vascul- (“vessel”) connects Revascularization to the entire vascul- ROOT FAMILY: vascular (pertaining to vessels), vasculitis (inflammation of vessels → disease), and avascular (without blood supply). The prefix re- is highly productive in medical terminology and appears in revascularization, resection, regeneration, reperfusion, and rehabilitation.
🔀 ALIASES / ALTERNATE TERMS
Revascularized(past-participial adjective — appears in clinical collocations such as “revascularized myocardium,” “revascularized limb,” and “successfully revascularized lesion”)
Reperfusion(lay/clinical synonym for the end result of revascularization — return of oxygenated blood to ischemic tissue; used especially in acute MI and stroke contexts; may also refer to reperfusion injury, a distinct pathological complication)
Recanalization(clinical synonym especially used in interventional radiology and vascular surgery — restoration of patency to an occluded vessel by mechanical means; coded based on the method used — e.g., angioplasty, stenting)
Percutaneous revascularization(catheter-based approach through the skin — no open surgery; includes angioplasty, stenting, atherectomy, and lithotripsy; documented as “endovascular” in op reports)
Surgical revascularization(open surgical approach — includes bypass grafting using vein or synthetic graft; coded with open surgical CPT codes distinct from endovascular codes)
Coronary revascularization(heart-specific form — restores blood supply to the myocardium; subtypes include PCI and CABG; associated with ICD-10-CM I25.10-I25.119, I21.x, I22.x)
Peripheral revascularization(extremity-focused form — lower extremity most common; associated with peripheral arterial disease (PAD), ICD-10-CM I70.2x-I70.7x; includes both endovascular and open bypass approaches)
Lower extremity revascularization (LER)(specific anatomic subset — major focus of the 2026 CPT restructuring; 46 new codes 37254-37299 replaced the prior 37220-37235 series as of January 1, 2026)
Myocardial revascularization(organ-specific form — restoration of coronary perfusion; includes PCI for acute or chronic coronary syndromes and CABG; ICD-10-CM I25.10-I25.810)
Limb salvage revascularization(clinical purpose-based subtype — performed to prevent amputation in patients with chronic limb-threatening ischemia (CLTI); often involves tibial and inframalleolar territory interventions)
Chronic total occlusion (CTO) revascularization(highest-complexity subtype — complete 100% occlusion of a vessel; requires antegrade and/or retrograde approach; as of 2026, coded with new CPT 92945 for coronary CTO)
🔗 RELATED TERMS
Ischemia — the opposite physiological state that necessitates revascularization; insufficient oxygen delivery to tissue due to reduced or absent arterial flow; coded under ICD-10-CM I20-I25.x (cardiac), I70.2x-I70.7x (peripheral), or I63.x (cerebral)
Atherosclerosis — the primary underlying disease driving the need for revascularization; shares the pathological root of plaque formation and arterial wall thickening; ICD-10-CM I70.x — the dominant code category for peripheral artery disease requiring LER
Angioplasty — the most basic revascularization technique; balloon inflation within a stenosed vessel to restore lumen patency; occupies the lowest tier in the 2026 CPT LER hierarchy (below stenting, atherectomy, and lithotripsy)
Stenting — revascularization technique in which a metallic scaffold is deployed to maintain vessel patency after dilation; includes bare metal, drug-eluting, self-expanding, and balloon-expanding stent types; second tier in the 2026 LER CPT hierarchy
Atherectomy — revascularization technique involving mechanical removal or ablation of plaque; includes laser, rotational, orbital, and directional subtypes; third tier in the 2026 LER CPT hierarchy
Intravascular lithotripsy — highest-tier revascularization technology in the 2026 LER CPT hierarchy; uses sonic pressure waves to fracture calcified plaque; reported with dedicated add-on CPT codes within the 37254-37299 range
Stenosis — partial narrowing of a vessel lumen (less than 100% occlusion); in 2026 CPT guidelines, defined as a “straightforward lesion” — coded with straightforward LER codes even if documented as “severe” or “high-grade” by the physician
Occlusion — complete 100% blockage of a vessel with no flow; in 2026 CPT guidelines, defined as a “complex lesion” — coded with complex LER codes; supported by ICD-10-CM I70.92 for lower extremity documentation
Perfusion — the physiological delivery of blood to capillary beds within tissue; revascularization is the procedural means to restore it when lost
CABG (Coronary Artery Bypass Grafting) — surgical revascularization of the heart using a conduit (vein or artery) to bypass an obstructed coronary artery; distinct from PCI in approach; ICD-10-CM status codes Z95.1 (bypass graft) or Z98.61 (coronary angioplasty status)
PCI (Percutaneous Coronary Intervention) — catheter-based coronary revascularization; includes balloon angioplasty + stenting ± atherectomy; primary CPT codes 92920-92945 (2026 updates include new codes 92930 and 92945)
Peripheral Arterial Disease (PAD) — the systemic disease that most commonly drives lower extremity revascularization; primary ICD-10-CM category I70.x; requires specificity to native vs. bypass graft, laterality, and presence/absence of complications (ulcer, gangrene, rest pain, claudication)
Chronic Limb-Threatening Ischemia (CLTI) — severe PAD with rest pain, tissue loss, or gangrene; drives complex LER procedures in tibial and inframalleolar territories; associated with ICD-10-CM I70.24x, I70.25x, I70.26x, I70.34x, I70.35x, I70.36x (with ulceration/gangrene)
Angiography — the diagnostic imaging procedure (contrast + fluoroscopy) performed prior to or during revascularization to visualize vessel anatomy; separately billable if no recent prior study exists or documented criteria for repeat study are met
Unspecified atherosclerosis of native arteries of extremities, right leg
I70.202
Unspecified atherosclerosis of native arteries of extremities, left leg
I70.203
Unspecified atherosclerosis of native arteries of extremities, bilateral legs
I70.211
Atherosclerosis of native arteries of extremities with intermittent claudication, right leg
I70.212
Atherosclerosis of native arteries of extremities with intermittent claudication, left leg
I70.213
Atherosclerosis of native arteries of extremities with intermittent claudication, bilateral legs
I70.221
Atherosclerosis of native arteries of extremities with rest pain, right leg
I70.222
Atherosclerosis of native arteries of extremities with rest pain, left leg
I70.223
Atherosclerosis of native arteries of extremities with rest pain, bilateral legs
I70.241
Atherosclerosis of native arteries of left leg with ulceration of thigh
I70.261
Atherosclerosis of native arteries of extremities with gangrene, right leg
I70.262
Atherosclerosis of native arteries of extremities with gangrene, left leg
I70.92
Chronic total occlusion of artery of the extremities ⚠️ Use this code to support “complex lesion” LER CPT codes (37254-37299) — represents 100% occlusion with no flow
Atherosclerotic heart disease of native coronary artery without angina pectoris
I25.110
Atherosclerotic heart disease of native coronary artery with unstable angina pectoris
I25.111
Atherosclerotic heart disease of native coronary artery with documented spasm
I25.118
Atherosclerotic heart disease of native coronary artery with other forms of angina pectoris
I25.119
Atherosclerotic heart disease of native coronary artery with unspecified angina pectoris
I21.01
ST elevation (STEMI) myocardial infarction involving left anterior descending coronary artery
I21.09
ST elevation (STEMI) myocardial infarction involving other coronary artery of anterior wall
I21.11
ST elevation (STEMI) myocardial infarction involving right coronary artery
I21.19
ST elevation (STEMI) myocardial infarction involving other coronary artery of inferior wall
I21.3
ST elevation (STEMI) myocardial infarction of unspecified site
I21.4
Non-ST elevation (NSTEMI) myocardial infarction
I25.810
Atherosclerosis of coronary artery bypass graft(s) without angina pectoris
Post-Procedural / Status Codes — Revascularization History
Code
Description
Z95.1
Presence of aortocoronary bypass graft
Z95.5
Presence of coronary angioplasty implant and graft
Z95.810
Presence of automatic (implantable) cardiac defibrillator
Z98.61
Coronary angioplasty status
Z98.62
Peripheral vascular angioplasty status
Z79.02
Long-term (current) use of antithrombotics/antiplatelets (commonly coded as secondary dx post-revascularization)
🔧 COMMON CPT CODES (Revascularization — Cardiac & Peripheral)
🫀 Coronary / Cardiac Revascularization (PCI)
CPT Code
Description
92920
Percutaneous transluminal coronary angioplasty (PTCA); single major coronary artery or branch
92921
PTCA; each additional branch of a major coronary artery (List separately in addition to code for primary procedure)
92924
Percutaneous transluminal coronary atherectomy, with coronary angioplasty when performed; single major coronary artery or branch
92925
Percutaneous transluminal coronary atherectomy, with coronary angioplasty when performed; each additional branch (add-on)
92928
Percutaneous transcatheter placement of intracoronary stent(s), with coronary angioplasty when performed; single major coronary artery or branch
92929
Percutaneous transcatheter placement of intracoronary stent(s), with coronary angioplasty when performed; each additional branch (add-on)
92930
⭐ NEW 2026 — Percutaneous transcatheter placement of intracoronary stent(s), with coronary angioplasty when performed; two or more distinct lesions or bifurcation lesion requiring intervention in main artery and side branch
92933
Percutaneous transluminal coronary atherectomy, with intracoronary stent, with coronary angioplasty when performed; single major coronary artery or branch
92934
Percutaneous transluminal coronary atherectomy, with intracoronary stent, with coronary angioplasty when performed; each additional branch (add-on)
92937
Percutaneous transluminal revascularization of or through coronary artery bypass graft (internal mammary, free arterial, venous), any combination of intracoronary stent, atherectomy and angioplasty; single vessel
92938
…each additional vessel (add-on)
92941
Percutaneous transluminal revascularization of acute total/subtotal occlusion during acute myocardial infarction; single vessel
92943
Percutaneous transluminal revascularization of chronic total occlusion, coronary artery; single vessel
92944
…each additional vessel (add-on)
92945
⭐ NEW 2026 — Percutaneous transluminal revascularization of chronic total occlusion, coronary artery, using antegrade and retrograde approaches; single vessel
⚠️ NOTE: CPT codes 37220-37235 were DELETED effective January 1, 2026. They have been replaced by 46 new codes (37254-37299), organized by vascular territory and lesion complexity. Do NOT use deleted codes for 2026 dates of service.
CPT Code
Description
37254
Endovascular revascularization, open or percutaneous, iliac artery; straightforward lesion (stenosis), initial vessel
…inframalleolar artery; each additional vessel, straightforward (add-on)
37283
…inframalleolar artery; each additional vessel, complex (add-on)
🩺 Diagnostic Angiography (Separately Billable When Criteria Met)
CPT Code
Description
75710
Angiography, extremity, unilateral, radiological supervision and interpretation
75716
Angiography, extremity, bilateral, radiological supervision and interpretation
75625
Aortography, abdominal, by serialography, radiological supervision and interpretation
75630
Aortography, abdominal plus bilateral iliofemoral lower extremity, catheter, by serialography
93454
Catheter placement in coronary artery(s) for coronary angiography, including intraprocedural injection(s) for coronary angiography, radiological S&I; without concomitant left heart catheterization
93456
…with right heart catheterization
93458
…with left heart catheterization including intraprocedural injection(s) for left ventriculography
🔬 Adjunct / Add-On Procedures
CPT Code
Description
37252
Intravascular ultrasound (IVUS), initial noncoronary vessel, during diagnostic evaluation or therapeutic intervention; initial vessel (add-on)
37253
…each additional noncoronary vessel (add-on)
92978
Intravascular ultrasound (coronary vessel or graft) during diagnostic evaluation or therapeutic intervention; initial vessel (add-on)
92979
…each additional vessel (add-on)
75577
⭐ NEW 2026 — Coronary plaque assessment by CT angiography, including assessment of quantitative plaque characteristics; radiological supervision and interpretation (replaced deleted Category III codes 0623T-0626T)
⚠️ Coding Note: For lower extremity revascularization (LER), the single most critical distinction in 2026 is lesion complexity: a “straightforward” lesion is any stenosis less than 100% (select lower-complexity LER code), while a “complex” lesion is a 100% occlusion with zero flow (select complex LER code and support with ICD-10-CM I70.92). This definition is CPT-driven — even a 99% stenosis is straightforward per CPT guidelines, regardless of how the physician documents it. On inpatient profee claims, sequence the primary atherosclerosis code (I70.2x-I70.7x) first with site, laterality, and severity specificity (claudication, rest pain, ulceration with anatomic location, or gangrene); add I70.92 as a secondary code only when the operative report confirms a chronic total occlusion supporting the complex lesion CPT code. Watch for undercoding of the tibial and inframalleolar territories — these are frequently miscoded or bundled inappropriately; documentation of “below-knee” or “pedal artery” involvement should prompt selection of the tibial (37270-37273) or inframalleolar (37280-37283) codes, not the femoral/popliteal group. For coronary revascularization on profee claims, use the new CPT 92945 for CTOs requiring both antegrade and retrograde approach — this is a separate, standalone code from 92943 (antegrade-only CTO) and must be supported by op report documentation of both approaches. Diagnostic angiography is separately billable only when no recent prior study exists OR when one of three criteria is met and documented: (1) prior images are inadequate, (2) patient’s condition has changed since prior study, or (3) intraoperative change outside the treatment area occurs.
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