CO-119 Denial Code: Benefit Maximum Reached

The official definition

“Benefit maximum for this time period or occurrence has been reached”

That is the verbatim definition of CARC 119 from the X12 Claim Adjustment Reason Code set, the standardized codes every insurer uses on EOBs and remittance advices. The letters in front of the number are the group code. CO: Contractual Obligation: an adjustment between the provider and the insurer. An in-network provider should not bill you for CO amounts.

What it means in plain English

You've hit a coverage cap for this specific benefit: an annual visit limit (say, 20 physical therapy visits), a day limit, or a dollar cap for a category of care. Sometimes the cap is real plan design. But the ACA prohibits annual and lifetime dollar limits on essential health benefits, so a dollar cap on essential care deserves scrutiny before you accept it.

What to check on your EOB

• The specific limit in your Summary of Benefits and Coverage; confirm the cap the insurer applied actually exists in your plan.
• Whether the cap is a dollar limit on an essential health benefit; under the ACA that may be improper.
• The insurer's count. Visit-limit denials are only as good as their tally; compare it against your own records.

What to do next

1. If the count is wrong, send the insurer your visit records and request reprocessing.
2. If more care is medically necessary, have your doctor request a benefit exception; many plans grant them.
3. Ask your provider whether the continuing care can be correctly billed under a different benefit category with its own limit.

Who's responsible

You, with your doctor for exceptions. Most denials carry a clear owner. Knowing whether the fix belongs to you, your doctor, or the billing office is half the battle. If it's the provider's error, you should not be paying for it.

Want the fundamentals first? Start with how to read an EOB and the 7 most common billing errors. This page is general information about standardized denial codes, not legal or medical advice.