How do I resolve a CO-252+N270 denial?

Identify which provider identifier is missing or invalid: Examine the claim to determine whether the referring, ordering, rendering, or supervising provider NPI or other primary identifier is absent or contains data errors in the appropriate loop/segment Obtain or verify the correct provider identifier: Retrieve the accurate NPI or primary identifier for the applicable provider from internal records, the NPPES registry, or by contacting the provider's office directly Submit a corrected claim with complete provider identification: File a corrected claim including the accurate provider identifier in the proper field, ensuring all other claim elements remain intact to avoid creating new errors

835 Denial Combination

CO-252+N270

Contractual Obligation · Claim-Level Adjustment

Missing Information

What This Combination Means

The claim cannot be processed because the primary identifier for another provider involved in the service is missing, incomplete, or invalid. This typically occurs in situations requiring referring, ordering, rendering, or supervising provider information where the NPI or other required identifier was not submitted or contains errors. The payer requires this specific provider identifier documentation before adjudication can proceed.

Financial Responsibility

provider writeoff

The provider must write off the denied amount under contractual obligation unless the missing provider identifier is submitted and the claim is successfully reprocessed.

N/A

Appeal Success

2-4 weeks (corrected claim resubmission)

Avg. Resolution

Medium

Difficulty

Appealable

Step-by-Step Resolution

Steps tailored specifically to this CO-252+N270 combination — not generic advice.

Not Appealable:This is a correctable information deficiency requiring claim resubmission with complete provider identifiers, not an appeal of a medical or coverage determination.

1
Identify which provider identifier is missing or invalid
Examine the claim to determine whether the referring, ordering, rendering, or supervising provider NPI or other primary identifier is absent or contains data errors in the appropriate loop/segment
2
Obtain or verify the correct provider identifier
Retrieve the accurate NPI or primary identifier for the applicable provider from internal records, the NPPES registry, or by contacting the provider's office directly
3
Submit a corrected claim with complete provider identification
File a corrected claim including the accurate provider identifier in the proper field, ensuring all other claim elements remain intact to avoid creating new errors

Specialty Context

How CO-252+N270 typically presents across different practice types.

Dental

Common when dental specialists (oral surgeons, periodontists) perform procedures requiring referring general dentist NPI, or when anesthesia providers must be identified for surgical procedures

Medical

Frequent in laboratory, radiology, and pathology claims requiring ordering physician NPI; also occurs in surgical claims needing referring or supervising provider identifiers for teaching physicians or mid-level practitioners

Behavioral Health

Typically seen when psychiatrists order psychological testing performed by psychologists, or when supervision documentation requires attending provider NPI for services delivered by supervised practitioners or trainees

Individual Code References

View the standalone definition for each code in this combination.

CARC 252 RARC N270

Need to resolve this denial?

Get a complete resolution plan with appeal guidance for this exact combination in seconds.

Generate a free resolution plan & appeal letter →

Synthesized from official definitions — not from training data

Was this helpful?

← Back to Combo Lookup Browse All Codes →