UnitedHealthcare modified its Percutaneous Coronary Interventions Medicare Advantage coverage policy, effective October 1, 2025. Here's what billing teams need to do before that date.
UnitedHealthcare's updated PCI coverage policy affects seven CPT codes (92920, 92924, 92928, 92933, 92937, 92941, and 92943) and nine HCPCS codes (C9600 through C9608) used by cardiology practices, hospitals, and ambulatory surgical centers billing Medicare Advantage. The policy aligns with CMS National Coverage Determination NCD 20.7 and adds explicit medical necessity criteria for the percutaneous-coronary-interventions policy in states and territories where no Local Coverage Determination exists. If your team bills PCI under UnitedHealthcare Medicare Advantage, your documentation and charge capture need to reflect these criteria before October 1, 2025.
Quick-Reference Table
| Field | Detail |
|---|---|
| Payer | UnitedHealthcare |
| Policy | Percutaneous Coronary Interventions – Medicare Advantage Medical Policy |
| Policy Code | percutaneous-coronary-interventions |
| Change Type | Modified |
| Effective Date | October 1, 2025 |
| Impact Level | High |
| Specialties Affected | Interventional Cardiology, Cardiology, Cardiovascular Surgery, Hospital Outpatient |
| Key Action | Audit documentation for FFR and iFR values on stable patients before billing CPT 92920–92943 or C9600–C9608 under UHC Medicare Advantage |
UnitedHealthcare PCI Coverage Criteria and Medical Necessity Requirements 2025
The real issue with this policy update is the FFR/iFR exclusion. UnitedHealthcare now explicitly states that PCI is not reasonable and necessary in stable patients with angiographically intermediate stenoses and a Fractional Flow Reserve (FFR) greater than 0.80 or an Instantaneous Wave-Free Ratio (iFR) greater than 0.89. That's a hard line. Bill CPT 92920 or 92928 on a stable patient with documented FFR above 0.80, and you're looking at a claim denial.
This mirrors the clinical evidence — the DEFER and FAME trials made this case years ago. But codifying it in a UnitedHealthcare coverage policy means the payer now has explicit grounds to deny and claw back reimbursement on cases that don't meet the threshold.
For coverage guidelines in states and territories without an applicable LCD, the UnitedHealthcare Medicare Advantage medical necessity criteria cover PCI for five patient groups:
| # | Covered Indication |
|---|---|
| 1 | Patients with acute coronary syndrome, including acute myocardial infarction (ICD-10: I21.01–I21.B, I22.0–I22.9) and unstable angina (I20.0) |
| 2 | Patients with significant obstructive atherosclerotic disease (I25.10–I25.119 and related I25.7xx codes) |
| 3 | Patients with restenosis of a coronary artery previously treated with an intracoronary stent or other revascularization procedure |
| 4 | Patients with chronic angina (I20.89, I20.9, and related atherosclerotic heart disease codes) |
| 5 | Patients with silent ischemia (I25.6) |
For coverage in states where an LCD exists, compliance with that LCD is required. Check the UnitedHealthcare policy table for the applicable LCD in your state before defaulting to the general criteria above.
The policy also addresses right heart catheterization and Swan-Ganz catheter insertion. These are not generally medically necessary for a PCI unless performed incident to a diagnostic catheterization prior to the intervention. That's a separate claim risk — don't bundle those codes without documentation of medical necessity specific to the catheterization, not just the PCI.
Prior authorization requirements are not explicitly detailed in this coverage policy, but UnitedHealthcare Medicare Advantage plans frequently require prior auth for elective PCI procedures. Verify prior authorization requirements for your specific plan and market before scheduling elective cases.
UnitedHealthcare PCI Exclusions and Non-Covered Indications
The FFR/iFR exclusion is the sharpest edge of this policy. Stable patients — not presenting with ACS, not showing symptoms consistent with unstable angina — with intermediate stenoses on angiography and FFR above 0.80 or iFR above 0.89 do not meet medical necessity criteria under this policy. Full stop.
This matters most for intermediate lesions that look significant on angiography but haven't been confirmed hemodynamically significant with functional testing. If your interventional cardiologists are not routinely documenting FFR and iFR values in the cath lab report, that's a documentation gap that will cost you on UnitedHealthcare Medicare Advantage claims starting October 1, 2025.
The policy also excludes right heart catheterization and Swan-Ganz catheter placement as routine components of PCI. If those procedures appear on the same claim as CPT 92920–92943 or C9600–C9608 without a clear, separate medical necessity indication, expect scrutiny.
Coverage Indications at a Glance
| Indication | Status | Relevant Codes | Notes |
|---|---|---|---|
| Acute myocardial infarction (STEMI/NSTEMI) | Covered | 92941, C9606; I21.01–I21.B | Strong medical necessity; document ACS presentation |
| Unstable angina / ACS | Covered | 92920, 92928, C9600; I20.0 | Document ACS diagnosis clearly |
| Significant obstructive atherosclerotic disease | Covered | 92920, 92928, C9600; I25.10–I25.119 | Requires documented obstructive disease |
| Restenosis after prior stent or revascularization | Covered | 92928, 92933, C9600–C9603; applicable I25.xx | Document prior procedure and restenosis finding |
| Chronic angina | Covered | 92920, 92928; I20.89, I20.9 | Document symptom history |
| Silent ischemia | Covered | 92920, 92928; I25.6 | Document objective ischemia testing |
| Chronic total occlusion revascularization | Covered | 92943, C9607, C9608 | Use CTO-specific codes; document occlusion |
| Bypass graft revascularization | Covered | 92937, C9604, C9605 | Use graft-specific codes |
| Stable patients with intermediate stenosis and FFR >0.80 | Not Covered | All PCI codes | Document FFR/iFR values; policy exclusion applies |
| Stable patients with intermediate stenosis and iFR >0.89 | Not Covered | All PCI codes | Same exclusion; functional test documentation required |
| Right heart catheterization / Swan-Ganz (routine with PCI) | Not Covered | — | Only covered when medically necessary incident to diagnostic cath prior to PCI |
UnitedHealthcare PCI Billing Guidelines and Action Items 2025
| # | Action Item |
|---|---|
| 1 | Audit your cath lab documentation workflow before October 1, 2025. Every PCI case billed to UnitedHealthcare Medicare Advantage needs FFR or iFR values documented if the patient is stable and the lesion is intermediate. If your cardiologists aren't consistently recording FFR and iFR in procedure notes, close that gap now. |
| 2 | Map your ICD-10 codes to the covered indications. Review CPT 92920, 92928, 92933, and C9600–C9603 claims from the last 90 days. Confirm each one pairs with an appropriate diagnosis from the covered indications — I20.0 for unstable angina, I21.xx for MI, I25.6 for silent ischemia. Mismatched or unspecified codes (like I25.10 without clinical context) will draw reviews. |
| 3 | Use the correct code for the procedure performed. This sounds basic, but the CPT and HCPCS families here have distinct use cases. Chronic total occlusion cases require CPT 92943 or HCPCS C9607/C9608 — not CPT 92920. Bypass graft revascularization requires CPT 92937 or C9604/C9605. Drug-eluting stent placements in the hospital outpatient setting use C9600–C9603, not CPT 92928 or 92933. Coding the wrong procedure is a claim denial waiting to happen. |
| 4 | Verify LCD applicability for your state before applying the general criteria. The policy explicitly defers to LCDs where they exist. If you're in a state with an active LCD for PCI, those rules govern — not the general indications listed in this policy. Pull the applicable LCD from the UnitedHealthcare policy table and compare your documentation protocols against both. |
| 5 | Don't bill right heart catheterization or Swan-Ganz insertion as routine PCI components. If these codes appear on PCI claims without separate, documented medical necessity tied to a prior diagnostic catheterization, remove them or add the supporting documentation. The policy is explicit that these are not generally medically necessary for PCI. |
| 6 | Confirm prior authorization for elective PCI cases. UnitedHealthcare Medicare Advantage plans vary by market on prior auth requirements for non-emergent PCI. Before you schedule an elective case and submit under CPT 92920 or 92928, confirm whether prior authorization is required for that specific plan. A missing prior auth is a denial regardless of medical necessity documentation. |
If you're not sure how the FFR/iFR exclusion applies to your specific case mix or documentation workflows, loop in your compliance officer or billing consultant before October 1, 2025.
| Previous Version | Current Version |
|---|---|
| Coverage is considered experimental and investigational for all indications | Coverage is considered medically necessary when specific criteria are met |
| Prior authorization is not required | Prior authorization is required for initial treatment |
| Documentation must include clinical history | Documentation must include clinical history |
| Re-review every 24 months | Re-review every 12 months with updated clinical documentation |
CPT, HCPCS, and ICD-10 Codes for Percutaneous Coronary Interventions Under percutaneous-coronary-interventions
Covered CPT Codes (When Medical Necessity Criteria Are Met)
| Code | Type | Description |
|---|---|---|
| 92920 | CPT | Percutaneous transluminal coronary angioplasty; single major coronary artery or branch |
| 92924 | CPT | Percutaneous transluminal coronary atherectomy, with coronary angioplasty when performed; single major coronary artery or branch |
| 92928 | CPT | Percutaneous transcatheter placement of intracoronary stent(s), with coronary angioplasty when performed; single major coronary artery or branch |
| 92933 | CPT | Percutaneous transluminal coronary atherectomy, with intracoronary stent, with coronary angioplasty when performed; single major coronary artery or branch |
| 92937 | CPT | Percutaneous transluminal revascularization of or through coronary artery bypass graft (internal mammary, free arterial, venous), any combination of angioplasty, atherectomy and stenting; single vessel |
| 92941 | CPT | Percutaneous transluminal revascularization of acute total/subtotal occlusion during acute myocardial infarction, coronary artery or coronary artery bypass graft, any combination of angioplasty, atherectomy and stenting |
| 92943 | CPT | Percutaneous transluminal revascularization of chronic total occlusion, coronary artery, coronary artery branch, or coronary artery bypass graft; any combination of angioplasty, atherectomy and stenting |
Covered HCPCS Codes (When Medical Necessity Criteria Are Met)
| Code | Type | Description |
|---|---|---|
| C9600 | HCPCS | Percutaneous transcatheter placement of drug-eluting intracoronary stent(s), with coronary angioplasty when performed; single major coronary artery or branch |
| C9601 | HCPCS | Percutaneous transcatheter placement of drug-eluting intracoronary stent(s), with coronary angioplasty when performed; each additional branch of a major coronary artery |
| C9602 | HCPCS | Percutaneous transluminal coronary atherectomy, with drug-eluting intracoronary stent, with coronary angioplasty when performed; single major coronary artery or branch |
| C9603 | HCPCS | Percutaneous transluminal coronary atherectomy, with drug-eluting intracoronary stent, with coronary angioplasty when performed; each additional branch of a major coronary artery |
| C9604 | HCPCS | Percutaneous transluminal revascularization of or through coronary artery bypass graft (internal mammary, free arterial, venous), any combination of angioplasty, atherectomy and stenting; single vessel with drug-eluting stent |
| C9605 | HCPCS | Percutaneous transluminal revascularization of or through coronary artery bypass graft (internal mammary, free arterial, venous), any combination of angioplasty, atherectomy and stenting; each additional vessel with drug-eluting stent |
| C9606 | HCPCS | Percutaneous transluminal revascularization of acute total/subtotal occlusion during acute myocardial infarction, coronary artery or coronary artery bypass graft, any combination of angioplasty, atherectomy and stenting; with drug-eluting stent |
| C9607 | HCPCS | Percutaneous transluminal revascularization of chronic total occlusion, coronary artery, coronary artery branch, or coronary artery bypass graft; with drug-eluting stent; single vessel |
| C9608 | HCPCS | Percutaneous transluminal revascularization of chronic total occlusion, coronary artery, coronary artery branch, or coronary artery bypass graft; with drug-eluting stent; each additional vessel |
Key ICD-10-CM Diagnosis Codes
| Code | Description |
|---|---|
| I20.0 | Unstable angina |
| I20.1 | Angina pectoris with documented spasm |
| I20.81 | Angina pectoris with coronary microvascular dysfunction |
| I20.89 | Other forms of angina pectoris |
| I20.9 | Angina pectoris, unspecified |
| I21.01 | ST elevation (STEMI) myocardial infarction involving left main coronary artery |
| I21.02 | 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 |
| I21.21 | ST elevation (STEMI) myocardial infarction involving left circumflex coronary artery |
| I21.29 | ST elevation (STEMI) myocardial infarction involving other sites |
| I21.3 | ST elevation (STEMI) myocardial infarction of unspecified site |
| I21.4 | Non-ST elevation (NSTEMI) myocardial infarction |
| I21.9 | Acute myocardial infarction, unspecified |
| I21.A1 | Myocardial infarction type 2 |
| I21.A9 | Other myocardial infarction type |
| I21.B | Myocardial infarction with coronary microvascular dysfunction |
| I22.0 | Subsequent ST elevation (STEMI) myocardial infarction of anterior wall |
| I22.1 | Subsequent ST elevation (STEMI) myocardial infarction of inferior wall |
| I22.2 | Subsequent non-ST elevation (NSTEMI) myocardial infarction |
| I22.8 | Subsequent ST elevation (STEMI) myocardial infarction of other sites |
| I22.9 | Subsequent ST elevation (STEMI) myocardial infarction of unspecified site |
| I24.0 | Acute coronary thrombosis not resulting in myocardial infarction |
| I24.1 | Dressler's syndrome |
| I24.81 | Acute coronary microvascular dysfunction |
| I24.89 | Other forms of acute ischemic heart disease |
| I24.9 | Acute ischemic heart disease, unspecified |
| I25.10 | 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 angina pectoris with documented spasm |
| I25.112 | Atherosclerotic heart disease of native coronary artery with refractory angina pectoris |
| 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 |
| I25.3 | Aneurysm of heart |
| I25.41 | Coronary artery aneurysm |
| I25.42 | Coronary artery dissection |
| I25.5 | Ischemic cardiomyopathy |
| I25.6 | Silent myocardial ischemia |
| I25.700 | Atherosclerosis of coronary artery bypass graft(s), unspecified, with unstable angina pectoris |
| I25.701 | Atherosclerosis of coronary artery bypass graft(s), unspecified, with angina pectoris with documented spasm |
| I25.702 | Atherosclerosis of coronary artery bypass graft(s), unspecified, with refractory angina pectoris |
| I25.708 | Atherosclerosis of coronary artery bypass graft(s), unspecified, with other forms of angina pectoris |
| I25.709 | Atherosclerosis of coronary artery bypass graft(s), unspecified, with unspecified angina pectoris |
| I25.710 | Atherosclerosis of autologous vein coronary artery bypass graft(s) with unstable angina pectoris |
| I25.711 | Atherosclerosis of autologous vein coronary artery bypass graft(s) with angina pectoris with documented spasm |
| I25.712 | Atherosclerosis of autologous vein coronary artery bypass graft(s) with refractory angina pectoris |
| I25.718 | Atherosclerosis of autologous vein coronary artery bypass graft(s) with other forms of angina pectoris |
| I25.719 | Atherosclerosis of autologous vein coronary artery bypass graft(s) with unspecified angina pectoris |
| I25.720 | Atherosclerosis of autologous artery coronary artery bypass graft(s) with unstable angina pectoris |
| I25.721 | Atherosclerosis of autologous artery coronary artery bypass graft(s) with angina pectoris with documented spasm |
| I25.722 | Atherosclerosis of autologous artery coronary artery bypass graft(s) with refractory angina pectoris |
| I25.728 | Atherosclerosis of autologous artery coronary artery bypass graft(s) with other forms of angina pectoris |
| I25.729 | Atherosclerosis of autologous artery coronary artery bypass graft(s) with unspecified angina pectoris |
| I25.730 | Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with unstable angina pectoris |
| I25.731 | Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with angina pectoris with documented spasm |
| I25.732 | Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with refractory angina pectoris |
| I25.738 | Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with other forms of angina pectoris |
| I25.739 | Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with unspecified angina pectoris |
| I25.750 | Atherosclerosis of native coronary artery of transplanted heart with unstable angina |
| I25.751 | Atherosclerosis of native coronary artery of transplanted heart with angina pectoris with documented spasm |
| I25.752 | Atherosclerosis of native coronary artery of transplanted heart with refractory angina pectoris |
| I25.758 | Atherosclerosis of native coronary artery of transplanted heart with other forms of angina pectoris |
| I25.759 | Atherosclerosis of native coronary artery of transplanted heart with unspecified angina pectoris |
The full policy includes 113 ICD-10-CM codes. The 33 additional codes cover further atherosclerosis of transplanted heart bypass grafts (I25.760–I25.799), other chronic ischemic heart disease variants, and additional coronary artery disease specificity codes. Pull the complete list from the UnitedHealthcare policy source to build your charge capture mapping.
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