203Denial Code (CARC)Active
Denial Code CO 203 - Discontinued Service Fixes
CARC 203 indicates that a service on the claim was either discontinued or reduced. This adjustment reflects that the full service as initially billed was not performed, leading to a change in the amount reimbursed.
Who Pays: Group Code Liability
For CARC 203, the group code can vary. If the reduction or discontinuation is due to a contractual obligation, CO applies and the patient cannot be billed. If it reflects a patient decision or responsibility, PR applies and the patient may be billed for the non-covered portion.
Why Claims Get Code 203
- The service was stopped early, resulting in a reduced claim.
- The payer determined that part of the service was not medically necessary.
- Documentation did not support the full service billed.
- A coding error indicated a more comprehensive service than what was provided.
- The patient requested a service reduction.
How to Fix & Resubmit
- Review the remittance advice to understand which service was discontinued or reduced.
- Check the medical records to verify the service level provided and ensure it matches what was billed.
- Contact the payer to clarify the reason for the service reduction and if additional documentation is needed.
- If appropriate, submit a corrected claim reflecting the actual service provided.
- If the payer's determination is disputed, consider filing an appeal with supporting documentation.
Corrected Claim or Appeal?
Submit a corrected claim if the billing error was on the provider's side. If the payer's decision to reduce the service is disputed, an appeal with proper documentation may be warranted.
Preventing Future 203 Denials
- Ensure accurate coding that reflects the actual service provided.
- Maintain thorough documentation to support the full service billed.
- Verify medical necessity requirements with the payer before service delivery.
- Communicate with patients about service coverage and potential reductions.