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CO-141 Denial Code (Deactivated): Spans Coverage Periods

CO-141 meant the claim's dates covered time when the patient was eligible and time when they were not. X12 deactivated it without naming a successor; CARC 239 now asks for separate claims, and CARC 238 reports the ineligible portion as patient responsibility.

X12 deactivated CARC141 on July 1, 2012. Payers should no longer use it on new remittances, but it can still appear on older ERAs, corrected claims, and appeals.

Code: CO-141 (CARC 141)
Status: Deactivated StoppedJuly 1, 2012 (in use since June 30, 1999).
Code set: Claim Adjustment Reason Codes (CARC)
Group codes: CO (Contractual Obligation): The provider had to correct the claim by splitting it; the patient was not billed on the basis of this code.
Official description: Claim spans eligible and ineligible periods of coverage.
X12 Claim Adjustment Reason Codes, retrieved September 25, 2026
Last verified: September 24, 2026 against the official X12 list.

What CO-141 meant

CARC 141 applied when one claim’s service dates straddled a change in the patient’s coverage. For example, a stay that began while the member was covered and continued after the policy ended. The payer could not process the whole period as billed.

What replaced it

X12 did not name a replacement, but two active codes describe the situation more precisely:

CO-239 asks the provider to rebill separate claims for the eligible and ineligible periods.
PR-238 is used when the payer processes the claim and reports the ineligible portion as patient responsibility.

For claims entirely outside coverage, see PR-26 and PR-27.

If you still see CO-141

It will mainly appear in older claim histories. To resolve it, check the exact coverage start or end date with the payer, then split the claim at that date. Send the eligible portion back to this payer as a new or corrected claim, following its rules, and bill the remaining dates to whichever coverage applied, or to the patient if none did. Institutional claims may need the statement period and occurrence codes adjusted as well.

CO-239 (Claim spans eligible and ineligible periods of coverage.): Claim spans eligible and ineligible periods of coverage; rebill separate claims.
PR-238 (Claim spans eligible and ineligible periods of coverage, this is the reduction for the ineligible period. (Use only with Group Code PR)): The reduction for the ineligible period, used only with group PR.
PR-27 (Expenses incurred after coverage terminated.): Expenses incurred after coverage terminated.
PR-26 (Expenses incurred prior to coverage.): Expenses incurred before coverage began.

CO-141 FAQ

Which claims usually trigger this?

Claims with a date range, such as inpatient stays, home health episodes, monthly rentals, or recurring services, where coverage started or ended partway through.

How do I fix a claim like this?

Split it into two claims at the coverage boundary. Bill the covered dates to this payer and the other dates to the patient's other coverage or to the patient.

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