M8
What This Code Means
We do not accept blood gas tests results when the test was conducted by a medical supplier or taken while the patient is on oxygen.
Common Causes
- Payer-specific processing rule or historical/administrative code
- May require payer contact for full context
How to Resolve or Appeal
- Review the payer's specific policy referenced by this code
- Contact the payer's provider services line if the reason isn't clear from the remittance
More Denial Codes to Check
Educational reference only — not medical or legal advice. Always confirm code usage and appeal rights with the specific payer.