When a claim bounces, denied, or is partially paid, the easiest way to differentiate between a CARC and a RARC is to understand that CARC explains the financial action taken, while RARC explains the reason, additional details, or next steps needed to resolve the claim issue.
In simple terms:
- CARC (Claim Adjustment Reason Code) tells you what happened to the payment.
- RARC (Remittance Advice Remark Code) tells you why it happened or what you need to do next.
Both codes work together on the Remittance Advice (RA) or Explanation of Benefits (EOB) to help billing teams identify, correct, and resubmit claims efficiently.
Understanding CARC (Claim Adjustment Reason Codes)
CARCs are standardized codes used by insurance payers to explain payment adjustments, reductions, denials, or rejections.
These codes answer the question:
“What financial action did the payer take on this claim?”
Common Examples of CARCs
A CARC may indicate:
- Claim denied due to lack of authorization.
- Service is not covered under the patient’s plan.
- Duplicate claim submission.
- Deductible or coinsurance applied.
- Timely filing limit exceeded.
- Medical necessity not established.
Example
CARC 197: Precertification or authorization was not obtained.
This code tells the billing team why payment was adjusted or denied, but it may not provide complete instructions on how to fix the issue.
Understanding RARC (Remittance Advice Remark Codes)
RARCs provide supplemental information that supports the CARC.
These codes answer the question:
“Why did this happen, and what should we do next?”
Common Examples of RARCs
A RARC may explain:
- Missing documentation requirements.
- Additional records needed.
- Incorrect modifier usage.
- Resubmission instructions.
- Appeal requirements.
- Claim processing notes.
Example
RARC N130: Consult plan benefit documents for information about limitations and exclusions.
This remark provides additional context that helps the billing staff understand the denial and determine the next action.
How CARCs and RARCs Work Together
Most denied or adjusted claims include both a CARC and a RARC.
Example Scenario
CARC 50
These services are not considered medically necessary.
RARC M86
Service denied because documentation does not support medical necessity.
In this example:
- The CARC identifies the payment adjustment.
- The RARC explains the documentation issue causing the denial.
Together, they provide a complete picture of why the claim was not paid.
Quick Comparison Between CARC and RARC
CARC
- Explains payment adjustment or denial.
- Indicates what happened financially.
- Used to calculate reimbursement changes.
- Required on remittance advice.
RARC
- Provides additional explanation.
- Indicates why the adjustment occurred.
- Helps identify corrective actions.
- Often accompanies a CARC.
Why Understanding CARC and RARC Matters
Accurately interpreting these codes helps healthcare organizations:
- Reduce claim denials.
- Improve first-pass claim acceptance rates.
- Speed up appeals and resubmissions.
- Strengthen denial management processes.
- Increase reimbursement accuracy.
- Improve overall revenue cycle performance.
Many practices lose revenue because staff focus only on the denial itself without reviewing both the CARC and RARC together.
Best Practices for Denial Management
To effectively resolve claim issues:
- Review both CARC and RARC codes together.
- Track recurring denial trends.
- Verify insurance eligibility before service.
- Ensure accurate medical coding and documentation.
- Monitor payer policy changes regularly.
- Conduct routine claims audits.
A strong denial prevention strategy can significantly reduce administrative costs and improve collections.
How The Medicators Can Help
At https://themedicators.com/, our specialists analyze CARC and RARC trends to identify the root causes of denials and payment delays. Through our comprehensive medical billing services, denial management solutions, revenue cycle management services, and medical coding support, we help healthcare providers improve claim acceptance rates and maximize reimbursements.
Our team works proactively to identify recurring denial patterns, correct billing errors, and streamline the claims process before revenue is impacted.
Looking to reduce denials and improve collections? Explore our healthcare billing solutions at https://themedicators.com/ and discover how expert revenue cycle management can help your practice get paid faster and more accurately.
