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M66 - Denial Journal
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RARC

M66

RARC General
Quick Facts
Code
M66
Type
RARC
Category
General
Status
Active

What Does This Code Mean?

Diagnostic tests subject to price limitations must have technical and professional components submitted as separate line items.

Common Causes

  • Payer-specific processing rule or historical/administrative code
  • May require payer contact for full context

Recommended Next Steps

  1. Review the payer's specific policy referenced by this code
  2. Contact the payer's provider services line if the reason isn't clear from the remittance

More Denial Codes to Check

RARC M118 RARC N98 RARC N25 CARC CO-118 RARC N20 CARC CO-191 RARC N18 CARC CO-145 CARC CO-132 CARC CO-209 RARC N93 RARC N43 CARC CO-106

Educational reference only — not medical or legal advice. Always confirm code usage and appeal rights with the specific payer.

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