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CO-50 Denial Code — Non-covered because not deemed a medical necessity by the payer – Denial Journal
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CARC

CO-50

CARC CO — Contractual Obligation Medical Necessity
Quick Facts
Code
CO-50
Type
CARC
Category
Medical Necessity
Status
Active

Non-covered because not deemed a medical necessity by the payer

What Does This Code Mean?

The payer determined the service does not meet its medical necessity criteria for the diagnosis billed.

Common Causes

  • ICD-10 code doesn't support the CPT code billed
  • Local Coverage Determination (LCD) criteria not met
  • Documentation doesn't establish medical necessity
  • Screening vs. diagnostic service coded incorrectly

Recommended Next Steps

  1. Review the payer's LCD/NCD for the specific CPT code
  2. Confirm diagnosis coding supports the service performed
  3. Request medical records review or file a redetermination appeal
  4. Consider an Advance Beneficiary Notice (ABN) workflow going forward

Related Codes

CARC CO-167

More Denial Codes to Check

CARC CO-153 RARC N362 CARC CO-D2 CARC CO-151 RARC M10 RARC M42 CARC CO-56 RARC M25 CARC CO-261 CARC CO-57 CARC CO-150 RARC M123

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

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