DraftPremera BluecrossPolicy N/A

Coronary Angiography (Adults) — Coverage Criteria

Defines medical necessity, site-of-service expectations, documentation, and coding for coronary angiography in adults (age 19+), including indications for known or suspected coronary artery disease and examples of conditions that do not require medical review.

Policy Summary

PayerPremera Bluecross

PolicyCoronary Angiography (Adults) — Coverage Criteria

Policy CodePolicy N/A

Change TypeNo material change

Effective DateOct 1, 2025

Next Review DateSep 8, 2026

Key ActionObtain prior authorization demonstrating guideline-based indications and document prior noninvasive testing and clinical rationale in the medical record.

SourceLink

POLICY UPDATE CHANGES

No material clinical or coverage changes in this revision.

Age 19+Applies to

Multiple CPT & HCPCSCoding entries

Inpatient restrictedSite-of-service rule

Several listedNo-review conditions

2013–2026History timeframe

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Known or Suspected Coronary Artery Disease

Covered when ANY ONE of the following groups is met:

Angina indications: Includes the following angina-related scenarios: Stable angina in any of: recurrent angina within 9 months of PCI; CCS class I–II with intolerance of or failure to respond to medical treatment; CCS class III–IV that improves to class I–II on medical therapy; CCS class III–IV despite optimal medical therapy. Also unstable angina or non–ST-elevation MI with high or intermediate risk as evidenced by elevated troponin, ischemia-related heart failure, persistent hemodynamic or electrical instability, LVEF <40%, prior PCI within 6 months or prior CABG within 12 months, suspected or confirmed new ST-segment depression, sustained ventricular arrhythmia, or recurrent angina/ischemia at rest or with low activity >20 minutes despite optimal medical therapy.

High-risk noninvasive findings: High risk for CAD on noninvasive testing defined by any of: echocardiographic wall motion abnormality involving >2 segments; Duke Treadmill Score ≤ -11; resting LVEF ≤35%; stress ECG with ST-segment elevation or ventricular arrhythmia or ≥2 mm ST depression; stress-induced large perfusion defect (particularly anterior) or multiple moderate defects; stress-induced LV dysfunction (exercise LVEF <35%); significant (≥50%) stenosis in an unprotected left main coronary artery on recent CCTA.

High risk on myocardial perfusion imaging: Any of: large fixed perfusion defect with left ventricular dilatation or increased lung uptake; stress-induced moderate perfusion defect with LV dilatation or increased lung uptake; left ventricular enlargement or transient post-stress ischemic LV dilatation.

Post-MI and other high-risk clinical scenarios: After acute MI for risk stratification when any of: clinically significant heart failure during hospital course; ischemia provoked by minimal exercise on noninvasive testing; LVEF ≤45% and unable to undergo noninvasive testing. Also includes ischemia recurring within 12 months of CABG; suspected acute pericarditis when infarction cannot be ruled out; survival of sudden cardiac arrest or sustained VT; cardiac risk assessment prior to high-risk noncardiac surgery when noninvasive testing not possible; suspected stent thrombosis post-PCI; and reevaluation of a specific area when change in clinical status, need for re-imaging related to an invasive procedure, or interval reassessment may impact the treatment plan.

Site of Service Criteria

Site of service covered when appropriate:

Preferred outpatient sites: Off-campus outpatient hospital/medical center; On-campus outpatient hospital/medical center; Ambulatory surgical center — these are the preferred medically necessary sites for certain elective surgical procedures.

Inpatient site allowable only with increased risk: Inpatient hospital/medical center is considered medically necessary only when the individual has a clinical condition that increases risk for complications, including but not limited to anesthesia risk (ASA classification III or higher; personal history of anesthesia complication; alcohol dependence or history of cocaine use; prolonged surgery >3 hours) or cardiovascular risk (uncompensated CHF NYHA III/IV; recent MI <3 months; poorly controlled or resistant hypertension; recent CVA <3 months; increased risk for cardiac ischemia such as drug-eluting stent <1 year or angioplasty <90 days).

Conditions Not Requiring Medical Review

No medical review required for the following conditions:

Listed conditions: Congenital heart disease; Heart failure; Hypertrophic cardiomyopathy; Kawasaki disease; Pulmonary artery extrinsic compression of the left main coronary artery; Valvular disease; Post–cardiac transplant when the individual has not undergone coronary angiography in the preceding six months.

Indications aligned with ACCF/AHA/other society guidance

Covered when meeting guideline-based indications

Class I indications: Individuals with stable ischemic heart disease (SIHD) who have survived sudden cardiac arrest or potentially life‑threatening ventricular arrhythmia; individuals with SIHD who develop symptoms/signs of heart failure warranting evaluation; and individuals whose clinical characteristics and noninvasive testing indicate a high likelihood of severe ischemic heart disease — coronary angiography is recommended when benefits exceed risks.

Levels of evidence B–C; see referenced guidelines

Reasonable (Class IIa) indications: Coronary angiography is reasonable for SIHD patients with depressed LV function (EF <50%) and demonstrable ischemia, for those with inconclusive or contraindicated noninvasive testing, and for individuals with unsatisfactory quality of life from angina who have intermediate risk on noninvasive testing.EF <50% for depressed LV function

Level of Evidence: C

Not recommended

Not recommended / can be considered not medically necessary

Class III / discouraged use: Coronary angiography is not recommended for individuals who elect not to undergo revascularization or who are not candidates for revascularization because of comorbidities or individual preferences; for individuals with preserved LV function (EF >50%) and low‑risk noninvasive testing; for asymptomatic individuals with no ischemia on noninvasive testing; and for individuals at low risk by clinical criteria who have not undergone noninvasive testing. This use is considered not medically necessary.EF >50% for preserved LV function

Based on ACCF/AHA guidance and evidence such as the COURAGE trial

Coronary angiography for known or suspected coronary artery disease is considered NOT medically necessary when the individual does not meet any of the indications specified in this policy. Indications that permit medical necessity include guideline-aligned clinical scenarios (e.g., unstable angina/non‑STEMI with high or intermediate risk features, post‑MI risk stratification with specified criteria, recurrent ischemia after CABG, suspected stent thrombosis, survivors of sudden cardiac arrest or sustained ventricular arrhythmia) and high‑risk findings on noninvasive testing. In the absence of one or more of these listed indications, invasive coronary angiography is not supported by this policy.

Proceeding directly to coronary angiography based solely on an individual’s occupation or on a sedentary lifestyle (even when combined with occupation) is insufficient to establish medical necessity. Abnormal results on noninvasive testing, or one of the specific clinical diagnoses listed in this policy, are required to justify invasive angiography.

This medical policy applies to commercial benefit plans administered by the Company and does not apply to Medicare Advantage. Providers and members should consult the member benefit booklet or contact customer service for Medicare Advantage coverage determinations.

If the indications summarized in this policy are not met, coronary angiography is considered not medically necessary. Additionally, an inpatient hospital site of service for an elective coronary angiography is allowable only when inpatient‑level clinical risk is documented per the site‑of‑service criteria; performing the procedure as an inpatient without meeting those site‑of‑service risk criteria may be considered not medically necessary.

Coronary angiography is considered not medically necessary for individuals with low‑risk clinical features who have not had noninvasive testing that demonstrates ischemia, and for those with preserved left ventricular function and low‑risk noninvasive results. The policy discourages invasive angiography in asymptomatic individuals or those with mild angina controlled by medication when no objective evidence of ischemia is present.

Coding and Billing

Covered CPT Codes (excerpt)CPTCovered

93454	Catheter placement in coronary artery(s) for coronary angiography, including intraprocedural injection(s) for coronary angiography, imaging supervision and interpretation.
93455	Catheter placement in coronary artery(s) for coronary angiography, including intraprocedural injection(s) for coronary angiography, imaging supervision and interpretation; with catheter placement(s) in bypass graft(s) (internal mammary, free arterial, venous grafts) including intraprocedural injection(s) for bypass graft angiography.
93456	Catheter placement in coronary artery(s) for coronary angiography, including intraprocedural injection(s) for coronary angiography, imaging supervision and interpretation; with right heart catheterization.
93457	Catheter placement in coronary artery(s) for coronary angiography, including intraprocedural injection(s) for coronary angiography, imaging supervision and interpretation; with catheter placement(s) in bypass graft(s) (internal mammary, free arterial, venous grafts) including intraprocedural injection(s) for bypass graft angiography and right heart catheterization.
93458	Catheter placement in coronary artery(s) for coronary angiography, including intraprocedural injection(s) for coronary angiography, imaging supervision and interpretation; with left heart catheterization including left ventriculography, when performed, and catheter placement(s) in bypass graft(s).

HCPCS / New CodesHCPCSCovered

C7516	Catheter placement in coronary artery(s) for coronary angiography, including intraprocedural injection(s) for coronary angiography, with endoluminal imaging of initial coronary vessel or graft using intravascular ultrasound (IVUS) or optical coherence tomography (OCT) during diagnostic evaluation and/or therapeutic intervention including imaging supervision, interpretation and report.
C7517	Catheter placement in coronary artery(s) for coronary angiography, including intraprocedural injection(s) for coronary angiography, with iliac and/or femoral artery angiography performed at the same time as cardiac catheterization and/or coronary angiography including positioning or placement of the catheter in the distal aorta or ipsilateral femoral or iliac artery, injection of dye, production of permanent images, and radiologic supervision and interpretation.
C7518	Catheter placement in coronary artery(ies) for coronary angiography, including intraprocedural injection(s) for coronary angiography, imaging supervision and interpretation, with catheter placement(s) in bypass graft(s) including intraprocedural injection(s) for bypass graft angiography with endoluminal imaging of initial coronary vessel or graft using IVUS or OCT during diagnostic evaluation and/or therapeutic intervention including imaging, supervision, interpretation and report.
C7520	Catheter placement in coronary artery(ies) for coronary angiography, including intraprocedural injection(s) for coronary angiography, imaging supervision and interpretation, including pharmacologically induced stress, with catheter placement(s) in bypass graft(s) and iliac and/or femoral artery angiography as applicable.
C7521	Catheter placement in coronary artery(ies) for coronary angiography, including intraprocedural injection(s) for coronary angiography with right heart catheterization with endoluminal imaging of initial coronary vessel or graft using IVUS or OCT during diagnostic evaluation and/or therapeutic intervention including imaging supervision, interpretation and report.
C7522	Catheter placement in coronary artery(ies) for coronary angiography, including intraprocedural injection(s) for coronary angiography, with right heart catheterization, with intravascular doppler velocity and/or pressure derived coronary flow reserve measurement during coronary angiography including pharmacologically induced stress.
C7557	Catheter placement in coronary artery(s) for coronary angiography, including intraprocedural injection(s) for coronary angiography, imaging supervision and interpretation with left heart catheterization including intraprocedural injection(s) for left ventriculography, when performed and intraprocedural coronary fractional flow reserve (FFR) with 3D functional mapping of color-coded FFR values for the coronary tree, derived from coronary angiogram data, for real-time review and interpretation.
C7568	Catheter placement with intravascular doppler velocity and/or pressure derived coronary flow reserve measurement during coronary angiography including pharmacologically induced stress (new code effective 01/01/26).
C7570	Intraprocedural coronary FFR with 3D functional mapping (list separately in addition to primary procedure) (new code effective 01/01/26).

Place of Service (Professional Claims Codes)mixed

19	Off-Campus-Outpatient Hospital (Place of Service code).
21	Inpatient Hospital (Place of Service code).
22	On Campus-Outpatient Hospital (Place of Service code).
24	Ambulatory Surgical Center (Place of Service code).

HCPCS codes added or updated in historyHCPCS

C7516
C7517
C7518
C7519
C7520
C7521
C7522
C7523
C7524
C7525

1–10 of 21

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inv-15: Duke Treadmill Score — value/key (≤ -11)

ThresholdDuke Treadmill Score (DTS) ≤ -11 indicates high risk for severe CAD and higher 5‑year mortality

Context in criteriaListed as a high‑risk noninvasive finding that supports coronary angiography

DTS componentsCombines exercise time, ST deviation, and angina index to calculate score

inv-16: Left ventricular ejection fraction (LVEF) thresholds — e.g., ≤ 35%, <40%, ≤45% contexts

High risk (resting)Left ventricular ejection fraction (LVEF) ≤ 35% considered high risk and supports angiography

Clinical instabilityLVEF <40% is noted in contexts of hemodynamic or electrical instability as an indication for angiography

Post‑MI specificAfter acute MI, LVEF ≤45% when the individual is unable to undergo noninvasive testing qualifies for angiography

Provider Actions, Authorization, and Documentation

Prior Authorization

Prior Authorization Required

Coronary angiography procedures and associated codes are subject to medical necessity review; prior authorization is required for elective procedures and for site-of-service determinations.

Applies to outpatient and inpatient settings; inpatient site-of-service may be denied when criteria are not met.

Prior Authorization

Guideline-based Indications Needed

Prior authorization requests must demonstrate guideline-based indications (Class I or reasonable Class IIa) per specialty society recommendations; procedures meeting Class III (no benefit) are not appropriate for approval.

Use Class I or IIa indications from ACC/AHA and other referenced guidelines when justifying angiography.
Do not approve angiography when member elects not to undergo revascularization or is low-risk with no ischemia on noninvasive testing.

Billing Rule

Verify Coding and Authorization for New HCPCS Codes

Providers should verify current CPT/HCPCS coding and any prior authorization requirements for recently added HCPCS codes; coding updates have occurred frequently and may affect authorization routing.

Recent HCPCS additions include multiple C75xx codes (see history for specific code additions and effective dates).
Confirm code-specific authorization requirements with Premera prior to claim submission.

Step Therapy

Step Approach — Noninvasive Testing First

Favor a step approach: obtain and document appropriate noninvasive testing first (e.g., CCTA, stress imaging) and generally defer invasive angiography when symptoms are controlled and noninvasive testing shows no ischemia.

Angiography is generally indicated when noninvasive testing suggests high likelihood of severe disease or when symptoms are refractory to optimal medical therapy.
Occupation alone is insufficient to bypass noninvasive testing.

Documentation Required

Required Clinical Documentation

Medical records submitted for review must document diagnosis, history & physical, severity, prior imaging/testing results, prior procedures, and the clinical rationale for invasive angiography.

Include noninvasive test reports (results and dates), symptom class (e.g., CCS), and rationale for proceeding to angiography.
Document any high-risk features or reasons inpatient site-of-service is requested.

Note

Benefit Verification

Verify member benefits and coverage prior to scheduling; consult the member benefit booklet or contact customer service. This policy does not apply to Medicare Advantage plans.

Check member-specific limitations, prior authorization channels, and site-of-service coverage.
Contact Premera Customer Service for plan-specific questions.

Denial Risk

Denial Triggers and Site-of-Service Risk

Denial triggers include low-yield or contraindicated scenarios such as: individuals who elect not to undergo revascularization, low-risk individuals with preserved LV function and no ischemia on noninvasive testing, or when occupation alone is the rationale.

Angiography is not recommended for asymptomatic individuals without ischemia on noninvasive testing.
Occupation or sedentary lifestyle alone do not justify direct angiography without risk stratification.

Note

Authorization Tool and Coding History

This policy historically referenced external authorization tools and has had multiple coding updates; providers should be aware of removed/replaced tools and review the policy history when questions arise.

History notes removal of external tools (e.g., MCG) and multiple HCPCS coding updates over time.

Note

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Definitions and Clinical Classifications

inv-31: ASA score — ASA classification used to describe anesthesia risk (ASA 1–5).

ScopeASA classification describes pre‑operative anesthesia risk using categories ASA 1–5

ASA 3A patient with severe systemic disease

ASA 4A patient with severe systemic disease that is a constant threat to life

Authorization relevanceInpatient site may be allowed when anesthesia risk is ASA III or greater

inv-32: CCS angina class — Canadian Cardiovascular Society Functional Classification (Class I–IV).

ScaleCanadian Cardiovascular Society (CCS) Functional Classification of Angina, Classes I–IV

Class IOrdinary physical activity does not cause angina

Class IIIMarked limitation of ordinary physical activity (e.g., walking one or two blocks)

Class IVInability to carry on any physical activity without discomfort; angina may be present at rest

inv-33: Cardiac angiography definition — invasive catheter-delivered contrast and fluoroscopy imaging.

DefinitionAn invasive procedure using catheter-delivered contrast and fluoroscopy to image great vessels, heart chambers, coronary arteries, bypass grafts, and to measure ventricular function

CapabilitiesEnables assessment of coronary anatomy and quantitative measures such as LVEF and cardiac output

Potential interventionsIf blockage is found, PCI may be performed during the same procedure or later

inv-34: NYHA Classification — Four-class system for heart failure functional limitation.

ScaleNew York Heart Association (NYHA) Classification: four classes describing functional limitation from heart failure symptoms (Class I–IV)

Class INo symptoms and no limitation in ordinary physical activity

Class IIIMarked limitation in activity; comfortable only at rest

Class IVSevere limitations; symptoms at rest; mostly bedbound

inv-35: CCS Functional Classification of Angina — four-class scale for angina severity.

ScaleCCS Functional Classification of Angina: four‑class scale from Class I (no limitation with ordinary activity) to Class IV (angina at rest)

UseUsed to grade angina severity to guide management and selection for angiography

Class IISlight limitation of ordinary activity

inv-36: Duke Treadmill Score (DTS) definition — score combining exercise time, ST deviation, and angina to stratify CAD risk.

DefinitionDuke Treadmill Score (DTS) combines exercise time, magnitude of ST‑segment deviation, and exercise‑induced angina to stratify CAD risk

CalculationDTS = exercise time (minutes) − (5 × ST deviation in mm) − (4 × angina index)

Risk categoriesHigh risk defined as DTS ≤ −11 (≈35% 5‑year mortality); intermediate +5 to −11; low ≥ +5

inv-37: Stable angina — management guidance referenced from NICE CG126 and ACC/AHA.

Definition and guidance sourcesStable angina management references include NICE Guideline CG126 and multiple ACC/AHA documents

Role in policyPolicy references guideline‑based management of stable ischemic heart disease when determining indications for angiography

Clinical approachFavor noninvasive testing first; angiography considered when symptoms persist despite medical therapy or testing indicates high risk

OpenPayer

Coronary Angiography (Adults) — Coverage Criteria

Coverage Criteria for Coronary Angiography

Coding and Billing

Provider Actions, Authorization, and Documentation

Background and Rationale

Definitions and Clinical Classifications

Policy Revision History