OA-223: Mandated Federal/State/Local Law Adjustment

What Does OA-223 Mean?

OA-223 appears in government program-specific scenarios or situations where the regulatory adjustment does not fit standard contractual or patient responsibility categories. This may occur when a program-specific regulation requires a non-standard payment methodology or when the adjustment affects coordination between government and commercial payers.

CARC 223 serves as a placeholder adjustment code for situations where a federal, state, or local law or regulation mandates a claim adjustment but no existing CARC code specifically covers that regulation. When a new regulatory mandate takes effect and affects claim payments, CARC 223 is used until a dedicated code is created by the X12 code committee. This makes CARC 223 inherently vague — the code itself tells you only that a regulation is involved, not which regulation or why.

Because of this ambiguity, the accompanying remark codes (RARCs) and the 835 remittance segments are critical for understanding what happened. Without reading these, you are essentially guessing at the basis of the adjustment. Common scenarios that trigger CARC 223 include state-mandated fee schedule reductions, new regulatory reporting requirements that affect payment, government program-specific payment rules, and retroactive regulatory changes that require claim adjustments.

CARC 223 appears most frequently with Group Code CO (contractual obligation) when the regulatory mandate creates a payment reduction the provider must absorb. It can also appear with PR when the regulation shifts costs to the patient, or with OA in government program-specific scenarios. The resolution depends entirely on identifying the underlying regulation — if the regulation was correctly applied, you accept the adjustment; if it was misapplied or does not apply to your services, you have grounds for appeal.

How to Resolve

Identify the specific regulation cited in the remark codes and 835 segments, then determine whether the adjustment was correctly applied to your claim.

1. Identify the program-specific regulation Review the remark codes to determine which government program regulation applies. Contact the payer's program compliance department for clarification if needed.
2. Determine next steps Based on the regulation, determine whether the remaining balance can be submitted to another payer, needs to be written off, or requires additional program-specific action.

Common RARC Pairings

The RARC code tells you exactly what triggered the OA-223:

How to Prevent OA-223

• Stay current with government program-specific regulatory changes that may trigger non-standard adjustments
• Maintain separate compliance tracking for each government program you participate in

Also Filed As

The same CARC 223 may appear with different Group Codes:

Related Denial Codes