The most common reasons anesthesia claims get denied

By the Titrate Revenue team · Updated October 2026

1. Eligibility. The patient's coverage wasn't active or the wrong plan was billed.
2. Enrollment. The CRNA or group wasn't enrolled or credentialed with that payer yet.
3. Modifiers. QZ, QX, QK or QY didn't match how the case was staffed or documented.
4. Missing or unclear time. No start or stop time, or times that don't add up.
5. Diagnosis codes. The diagnosis didn't support medical necessity for the procedure.
6. Duplicates. Two providers billed the same service in a way the payer read as a duplicate.
7. Timely filing. The claim went out after the payer's deadline.
8. Prior authorization. The plan needed approval that wasn't obtained.

Fix the cause, not just the claim

Track denials by reason and payer each month. If the same reason shows up twice, change the process that caused it. See how to appeal a denied claim.

This article is general information, not billing, legal or tax advice. Payer rules change; always check current guidance.