Resources
Medical billing resources & guides
Practical guides on medical billing, denials, AR, coding, credentialing and specialty billing, for practice owners and billing teams.
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How Long Does Credentialing Take? Timelines by Payer
Credentialing timelines vary by payer, provider type and how complete the application is. Here is where the time goes, what slows it down and how to plan around it.
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EOB vs ERA: What’s the Difference?
Both explain how a claim was paid, but in different formats for different readers. Here is how each works, how to read them and how they drive payment posting.
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90837 CPT Code: Billing Rules, Time & Reimbursement
The 90837 CPT code covers 60-minute individual psychotherapy. Here is how the time rule works, what the note needs, and how to find what a payer will pay.
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90791 vs 90792: Psychiatric Diagnostic Evaluation Billing
How the 90791 and 90792 psychiatric diagnostic evaluation codes differ, who may bill each, what can and cannot be billed on the same day, and what the intake note needs.
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90834 vs 90837: Which Psychotherapy Code to Use
How to choose between 90832, 90834 and 90837 based on psychotherapy time, what each note should show, and why payers watch the 90834 and 90837 mix.
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Corrected Claim vs Appeal vs Reconsideration
Three ways to change a claim outcome, and they are not interchangeable. Learn which one fits each denial, how frequency codes 7 and 8 work, and what Medicare does differently.
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Collaborative Care Model (CoCM) Billing
How primary care and specialty practices bill the Collaborative Care Model and general behavioral health integration: codes, time thresholds, consent and the records payers expect.
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CO-97 Denial Code: Bundled Services and How to Respond
CO-97 means the payer bundled a service into another it already paid. Learn how NCCI edits drive it, which remark codes appear, and when a modifier or appeal is right.
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CO-50 Denial Code: Medical Necessity Denials and Appeals
CO-50 means the payer decided the service was not medically necessary. Learn how to find the policy behind it, fix coding gaps, use ABNs correctly and build a strong appeal.
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CO-4 Denial Code: Modifier Mismatches and How to Fix Them
CO-4 means the payer found the procedure code inconsistent with the modifier on the line. Learn what triggers it, which remark codes explain it and how to correct the claim.
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