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CO-83 Denial Code (Deactivated): Total Visits

CO-83 reported the total number of visits on a claim. It was a count rather than a reason for adjusting payment, and X12 deactivated it without naming a replacement.

X12 deactivated CARC83 on October 16, 2003. Payers should no longer use it on new remittances, but it can still appear on older ERAs, corrected claims, and appeals.

Code: CO-83 (CARC 83)
Status: Deactivated StoppedOctober 16, 2003 (in use since January 1, 1995).
Code set: Claim Adjustment Reason Codes (CARC)
Group codes: CO (Contractual Obligation): Listed on the remittance as a statistic, not as an amount the provider or patient owed.
Official description: Total visits.
X12 Claim Adjustment Reason Codes, retrieved September 25, 2026
Last verified: September 24, 2026 against the official X12 list.

What CO-83 meant

CARC 83 is officially just “Total visits.” Like several neighboring codes from the same era, it carried a count through the adjustment segment. For claims covering several visits, such as a month of home health or therapy, it told the provider how many visits the payer counted on the claim.

It explained nothing about money, which is why X12 later cleared these statistical codes out of the reason code list.

What replaced it

No successor was named. The current code set focuses on the payment effect of visits:

CO-B1 for visits that were not covered.
PR-119 when a visit limit or other benefit maximum was reached.
CO-B14 when only one visit per physician per day is covered.

If you still see CO-83

It should only show up in legacy remittance archives. Use it to reconcile visit counts on old claims, but do not post it as an adjustment. For current claims, compare the visits you billed with the paid lines and look for B1 or 119 on any that were not paid, then check the patient’s remaining visit benefits or authorization.

CO-B1 (Non-covered visits.): Non-covered visits, the active code for visits the payer did not pay.
PR-119 (Benefit maximum for this time period or occurrence has been reached.): Benefit maximum for this period or occurrence has been reached, often a visit limit.
CO-B14 (Only one visit or consultation per physician per day is covered.): Only one visit or consultation per physician per day is covered.

CO-83 FAQ

Why would visits be counted on a remittance?

For services billed in series, such as home health or therapy, providers and payers track visits against benefit limits and authorizations. A total visit count helped both sides reconcile.

What code explains visits that were not paid?

CARC B1 for non-covered visits, or CARC 119 if a benefit maximum was reached.

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