Subscribe to updates for Multiple Payers - 60054, AETNA - Aetna Precertification Inquiry - Due to scheduled maintenance Aetna Precertification Inquiry transactions will be unavailable Friday, July 31st from 11:00:00 PM EDT through 11:30:00 PM EDT Friday, July 31st. via email and/or text message. You'll receive email notifications when incidents are updated, and text message notifications whenever Payer Notifications creates or resolves an incident.