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Cardiology Medical Billing Services in California

AMS Solutions provides specialized cardiology medical billing for California practices — Los Angeles, San Francisco, San Diego, Sacramento, and statewide. Our AAPC-certified billers handle the full cardiology code set (93451-93461 cath, 92920/92924/92928/92930/92933/92937/92941/92943/92945 PCI, 93306-93308 echo, 93619-93655 EP) and the California payer mix that other billing companies miss.

CPT 2026 change (effective 1 January 2026): 92921, 92925, 92929, 92934, 92938 and 92944 were deleted. Branch work is now included in the base code for that major coronary artery, 92930 covers two or more distinct lesions with two or more stents in two or more segments or a bifurcation lesion treated in both the main artery and the side branch, and 92945 covers a chronic total occlusion treated by combined antegrade and retrograde approaches.

California-specific payer landscape

California cardiology billing crosses Medi-Cal Managed Care, commercial Blue Shield and Anthem, Kaiser (when out-of-network), UnitedHealthcare, Cigna, and Aetna. Noridian is the MAC for CA Medicare Part B with its own LCDs for cardiac imaging and EP.

Where California cardiology revenue leaks

  • Medi-Cal Managed Care prior-auth denials on advanced cardiac imaging (cardiac MRI, CCTA)
  • Missed 26/TC splits on echo and stress testing at hospital outpatient departments
  • Same-day cath + E/M bundling without Modifier 25
  • 21-day Medi-Cal claim submission window — late = denied
  • CTO PCI (92943 and 92945) documentation gaps

What AMS handles for California practices

  • Pre-encounter eligibility verification and benefit checks
  • Coding, charge entry, and claim submission supported by Epic EHR integration
  • Denial management and appeals (we don’t write off — we fight)
  • A/R follow-up and patient statements
  • Monthly reporting tied to your practice management system

California compliance

California Health & Safety Code requires patient itemized billing on request within 30 days. We sign a BAA for covered services and meet California Confidentiality of Medical Information Act (CMIA) requirements. AAPC-certified, $5M E&O.

Get a Cardiology Billing Assessment for Your California Practice

Call 866-973-2221 or book a 30-minute review with our team.

Do you bill all Medi-Cal Managed Care plans for cardiology?

Yes — Anthem Blue Cross Partnership, Blue Shield Promise, Health Net, L.A. Care, IEHP, Molina, and regional plans.

How do you handle Noridian Medicare LCDs for cardiac imaging?

We track Noridian LCD revisions monthly and ensure ICD-10 medical necessity matches before submission.

What’s the clean-claim rate for California cardiology with AMS?

95%+ on first pass.

Are you CMIA compliant in addition to HIPAA?

Yes. All BAAs reflect both HIPAA and CMIA requirements.

Can you handle aging A/R recovery?

Yes. We work old A/R (90-120+ days) on a contingency basis while taking over new claim cycles.

Related resources

See our full Cardiology Medical Billing services, California medical billing services, or download the 2026 Cardiology CPT Cheat Sheet.

Related Resources

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