02/19/2026
Last week, a Maryland behavioral health client reached out.
Eight 90837 claims denied at $0.
Denial code: CO-45. Charge exceeds fee schedule.
Same contract.
Same provider.
No billing changes.
Normally, the payer applies the small contractual adjustment and pays the rest.
This time? Full denial.
Instead of resubmitting immediately, our team at Evocare:
• Reviewed the 835 ERA
• Compared prior paid 90837 claims
• Checked fee schedule variance
• Identified a potential pricing logic issue
• Escalated with documentation
Because in medical billing and revenue cycle management, denials are rarely random.
They’re patterns.
And if you’re not tracking denial trends, fee schedule discrepancies, and payer reimbursement logic weekly, revenue leakage happens quietly.
Maryland providers: are you seeing increased CO-45 denials on behavioral health claims?
Let’s compare notes.