How do I fix or resolve code 22?

Verify the patient's insurance coverage on the payer eligibility portal or via a 270/271 transaction to identify all active plans and the coordination of benefits order (primary, secondary, tertiary). Determine the correct primary payer based on COB rules: birthday rule for dependents with two commercial plans, active employee coverage over retiree coverage, or Medicare Secondary Payer (MSP) rules. Submit the claim to the correct primary payer first; if the primary has already adjudicated, resubmit to the secondary payer with the primary EOB attached. If the patient disputes the COB order, obtain a COB letter from both payers confirming the coordination order and resubmit with the documentation. If the payer that issued the CO-22 is correct as secondary, resubmit the claim with the primary EOB and the correct COB indicator in the 837 transaction.

22Denial CodeGeneral Adjustment

Code 22

Problem Description

This care may be covered by another payer per coordination of benefits.

Root Cause

The payer has determined that another payer may be responsible for this claim based on coordination of benefits (COB) rules. This occurs when a patient has coverage under two or more insurance plans and the payer receiving the claim believes it is not the primary payer. Common scenarios include dual commercial coverage, Medicare as secondary with a commercial primary, or active employee coverage that should be primary over retiree coverage. The claim is not denied for medical necessity — it is returned for correct primary/secondary coordination.

Resolution Steps

1Verify the patient's insurance coverage on the payer eligibility portal or via a 270/271 transaction to identify all active plans and the coordination of benefits order (primary, secondary, tertiary).
2Determine the correct primary payer based on COB rules: birthday rule for dependents with two commercial plans, active employee coverage over retiree coverage, or Medicare Secondary Payer (MSP) rules.
3Submit the claim to the correct primary payer first; if the primary has already adjudicated, resubmit to the secondary payer with the primary EOB attached.
4If the patient disputes the COB order, obtain a COB letter from both payers confirming the coordination order and resubmit with the documentation.
5If the payer that issued the CO-22 is correct as secondary, resubmit the claim with the primary EOB and the correct COB indicator in the 837 transaction.

EHR Documentation Note

Claim denied 22 — COB/other payer responsible; verified coordination of benefits order, submitted to correct primary payer, and resubmitted with primary EOB to secondary.

Preventative Action

Verify coordination of benefits order during pre-visit eligibility checks and document the primary/secondary payer hierarchy in the patient record to prevent misdirected claims.

Related Codes in General Adjustment

Deductible Amount

Coinsurance Amount

Co-payment Amount

The procedure/revenue code is inconsistent with the patient's age. Usage: Refer to the 835 Healthcare Policy Identification Segment (loop 2110 Service Payment Information REF), if present.

This directory provides reference information only and does not constitute official legal, medical, or financial billing advice. Always consult the payer's official remittance advice and current coding guidelines.