What does denial code CO-119 mean?

CO-119 means the patient has reached the benefit maximum the plan allows for that service in the applicable period or occurrence. Therapy visit limits, chiropractic caps, and annual dollar maximums are the usual sources.

Can I bill the patient once the benefit maximum is reached?

Only with a valid advance notice signed before the service, given after you knew the cap was exhausted. Absent that notice the contractual group code makes it your write-off, which is why tracking the accumulator before the visit matters more than appealing afterwards.

CO-119: The benefit maximum for this period has been reached

CO-119 is a benefit-exhaustion denial, and it is the most predictable code on a remittance - the cap was knowable before the visit. Therapy visit limits, chiropractic maximums, annual dollar caps on specific categories, and per-occurrence limits all produce it. Because the limit is countable in advance, a practice that is absorbing CO-119 write-offs repeatedly has a front-end tracking problem rather than a denials problem, and no amount of appeal work will fix it.

What it means: The patient has used all of the benefit the plan allows for this service within the applicable period or occurrence.
Who pays the balance: Contractual unless valid advance notice was given once the cap was known to be exhausted.
Group code CO: Contractual Obligation - the provider absorbs the balance and cannot bill the patient

Why CO-119 happens

The patient exhausted a visit limit for therapy, chiropractic, or another capped category within the plan year.
An annual or lifetime dollar maximum for that benefit category was reached.
A per-occurrence or per-condition limit ran out partway through a course of treatment.
Visits delivered by another provider counted against the same shared limit without the practice knowing.
The plan year reset differently than assumed, so visits landed in a period that was already consumed.

How to fix a CO-119 denial

1
Confirm the count with the payer rather than your own records
Shared limits mean visits at other practices consume the same benefit, so your visit count is not the plan's. Request the accumulator from the payer for the applicable period.
2
Check for an exception or extension pathway
Many plans allow additional visits with documentation of continued medical necessity and measurable progress. This is usually a prior authorization process rather than an appeal.
3
Verify the cap was applied to the right period
If the plan year boundary was misapplied, visits were counted against a period they do not belong to, and the claim should be reprocessed.
4
Move to advance notice for continuing care
Once the benefit is genuinely exhausted, further visits need a signed advance notice before delivery for the balance to be collectible. Without it the write-off is yours.

Deadlines depend on the payer

Filing limits and appeal windows for CO-119 vary by payer and often by plan type within the same payer. Look up the specific payer to see its verified deadlines and the source document they came from.

Browse payer billing references

Preventing CO-119 denials

Capture the remaining visit or dollar accumulator at eligibility verification and track it in the chart, not just at intake.
Re-verify the accumulator partway through any capped course of treatment, since other providers may be drawing on the same limit.
Have the financial conversation and signed advance notice ready before the visit that will cross the cap.

CO-119 frequently asked questions

What does denial code CO-119 mean?: CO-119 means the patient has reached the benefit maximum the plan allows for that service in the applicable period or occurrence. Therapy visit limits, chiropractic caps, and annual dollar maximums are the usual sources.
Can I bill the patient once the benefit maximum is reached?: Only with a valid advance notice signed before the service, given after you knew the cap was exhausted. Absent that notice the contractual group code makes it your write-off, which is why tracking the accumulator before the visit matters more than appealing afterwards.

Related denial codes

PR-35 CO-197 PR-204 CO-96

Last reviewed August 5, 2026.

Denial code explanations are original plain-English summaries written for reference and are not the official X12 code descriptions. Payer handling of any code varies by contract - always verify against the remittance advice and your payer agreement before adjusting a claim.