835 Denial Combination

CO-193

CO

Contractual Obligation · Claim-Level Adjustment

Contractual Obligation

What This Combination Means

This combination indicates the payer has reviewed a previously adjudicated claim (likely after a provider inquiry or appeal) and determined the original processing was correct. The CO group code requires the provider to accept the original payment decision per their contractual agreement. No additional context is provided since no RARC accompanies this determination.

Financial Responsibility

provider writeoff

The provider must accept and write off any difference between billed charges and the payer's original payment decision per their network contract. Patient cannot be billed for this contractual adjustment.

N/A

Appeal Success

Immediate (write-off)

Avg. Resolution

Easy

Difficulty

No

Appealable

Step-by-Step Resolution

Steps tailored specifically to this CO-193 combination — not generic advice.

Not Appealable:The payer has already reviewed and affirmed the original processing decision, and the CO group code indicates a contractual obligation that cannot be disputed.
  1. 1

    Compare the original claim adjudication to contracted fee schedule or payment rules

    Verify the payer processed according to your contract terms since they affirm proper processing

  2. 2

    Post the contractual adjustment to patient account as provider write-off

    This is a binding contractual obligation and must be accepted as final

  3. 3

    Document the review outcome in billing system notes

    Record that payer affirmed original processing to prevent duplicate inquiry attempts

Specialty Context

How CO-193 typically presents across different practice types.

Dental

Common after peer review or appeal of orthodontic or implant claims where payer confirms original benefit determination was accurate per plan limitations

Medical

Frequently appears on reconsideration responses for hospital or surgical claims where payer confirms original DRG assignment, bundling edits, or fee schedule application was correct

Behavioral Health

May appear after dispute of session limits or medical necessity reviews where payer affirms original authorization decisions or visit caps were properly applied

Individual Code References

View the standalone definition for each code in this combination.

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Synthesized from official definitions — not from training data

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