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
1Patients with acute coronary syndrome, including acute myocardial infarction (ICD-10: I21.01–I21.B, I22.0–I22.9) and unstable angina (I20.0)
2Patients with significant obstructive atherosclerotic disease (I25.10–I25.119 and related I25.7xx codes)
3Patients with restenosis of a coronary artery previously treated with an intracoronary stent or other revascularization procedure
+ 2 more indications

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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
+ 8 more indications

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This policy is now in effect (since 2025-10-01). Verify your claims match the updated criteria above.

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.

+ 3 more action items

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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.


Sample Version Diff Line-by-line changes
Previous VersionCurrent Version
Coverage is considered experimental and investigational for all indicationsCoverage is considered medically necessary when specific criteria are met
Prior authorization is not requiredPrior authorization is required for initial treatment
Documentation must include clinical historyDocumentation must include clinical history
+ 1 more action items

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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
+ 4 more codes

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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
+ 6 more codes

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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
+ 61 more codes

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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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