835 Denial Combination
OA-23+MA18
Other Adjustment · Claim + Service Level Adjustment
Coordination of BenefitsWhat This Combination Means
Note: An informational alert accompanies this denial. This combination appears when a primary payer has adjudicated the claim and is notifying you that claim details are being automatically forwarded to the patient's secondary or supplemental insurance. The adjustment reflects the primary payer's payment or adjustment, and no action is required from the provider as the secondary payer will receive the information directly.
Financial Responsibility
other payer
The remaining balance after primary payer adjudication is the responsibility of the patient's supplemental insurer, which will receive the claim information automatically from the primary payer.
N/A
Appeal Success
Immediate (informational only)
Avg. Resolution
Easy
Difficulty
No
Appealable
Step-by-Step Resolution
Steps tailored specifically to this OA-23+MA18 combination — not generic advice.
- 1
Post the primary payer's payment and adjustment to the patient account
Record the OA-23 adjustment amount as applied by the primary payer per their adjudication
- 2
Wait for the secondary/supplemental payer's remittance
The primary payer is automatically forwarding claim information to the supplemental insurer; no manual crossover filing is needed
- 3
Monitor aging reports for secondary payer response within their standard processing timeframe
If no remittance is received within the supplemental payer's typical turnaround period, contact the supplemental insurer directly per MA18 instruction
Specialty Context
How OA-23+MA18 typically presents across different practice types.
Dental
Common when patients have both primary dental insurance and supplemental coverage for orthodontics, implants, or major services where coordination of benefits applies
Medical
Frequently seen with Medicare primary and Medigap supplemental policies, or employer group coverage with supplemental hospital indemnity or critical illness plans
Behavioral Health
May occur when patients have primary mental health benefits through one carrier and supplemental behavioral health coverage through an EAP or separate policy
Individual Code References
View the standalone definition for each code in this combination.
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