835 Denial Combination

CO-175

CO

Contractual Obligation · Service-Line Level Adjustment

Missing Information

What This Combination Means

The payer has denied or adjusted the claim because the prescription submitted lacks required information elements. Under the provider's contract with the payer, the provider must absorb this adjustment and cannot bill the patient. The prescription must be completed with all necessary components before the claim can be paid.

Financial Responsibility

provider writeoff

The provider must write off the denied amount per contractual obligation. The patient cannot be billed for services associated with an incomplete prescription.

N/A

Appeal Success

1-3 days (corrected claim)

Avg. Resolution

Medium

Difficulty

No

Appealable

Step-by-Step Resolution

Steps tailored specifically to this CO-175 combination — not generic advice.

Not Appealable:This is a contractual adjustment for missing prescription information, not a medical necessity determination, and the provider is contractually obligated to write off the amount.
  1. 1

    Identify missing prescription elements

    Examine the prescription to determine which required fields are incomplete (prescriber information, dosage, strength, quantity, directions, DAW code, or other mandated elements)

  2. 2

    Obtain complete prescription information

    Contact the prescribing provider to obtain all missing elements required for a complete prescription per payer requirements

  3. 3

    File corrected claim with complete prescription

    Resubmit the claim with the fully completed prescription information, ensuring all required fields are populated and legible

Specialty Context

How CO-175 typically presents across different practice types.

Dental

May apply to dental prescriptions for medications (antibiotics, analgesics) when prescription fields are incomplete or illegible.

Medical

Commonly occurs in medical practices when e-prescribing systems fail to populate all required fields or handwritten prescriptions lack dosage, quantity, or prescriber NPI.

Behavioral Health

Frequent in behavioral health when controlled substance prescriptions for psychiatric medications lack required DEA numbers, diagnosis codes, or other mandated elements.

Individual Code References

View the standalone definition for each code in this combination.

CARC 175

Medicare Contractor Guidance for CARC 175

Noridian

Prescription is not on file or is incomplete or invalid

How to Prevent CARC 175 Denials

  • ✓

    Ensure a valid order is on file in the medical record

Noridian Medicare PortalSame or Similar

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Synthesized from official definitions — not from training data

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