CO-119 Denial Code: Benefit Maximum for This Time Period Reached
CO-119 is a claim adjustment reason code meaning the benefit maximum for this time period or occurrence has been reached. The patient exhausted a visit, unit, or dollar cap, such as 20 PT visits per year. Verify the plan's counter, check exception options, and decide provider write-off versus patient billing by group code and notice.
- Group
- CO or PR (depends on notice and contract)
- Category
- Benefit limit exhausted
- Appealable?
- Sometimes; count errors and medical-exception requests
- Typical fix
- Verify the counter, request exception, or shift to patient with waiver
What does denial code CO-119 mean?
CO-119 means "benefit maximum for this time period or occurrence has been reached." The plan covers the service, and covered it right up until the counter hit its cap: 20 physical therapy visits, 12 chiropractic manipulations, a $1,500 annual therapy dollar limit, one screening per benefit year. This claim is number 21.
Example ERA: a PT clinic bills 97110 x2 units plus 97140, total $185.00, for visit 21 of a plan with a 20-visit outpatient therapy limit. The remittance shows: billed $185.00, allowed $0.00, CO-119 $185.00, paid $0.00, remark N362 or N435. Visits 1 through 20 paid normally; the counter simply ran out.
Why did the claim get a CO-119?
- The cap is real and was hit, often because the patient used part of the benefit at another provider earlier in the year, which your internal count could never see.
- Nobody tracked the counter. Verification captured "PT covered" but not "20 visits per calendar year, 14 already used."
- Payer counting error, such as counting evaluation codes against a treatment-visit cap or double-counting a corrected claim. This version is appealable.
- Occurrence-based caps (per injury, per episode) reset differently from calendar-year caps, and mismatched assumptions cause surprises.
How do you fix a CO-119 denial?
- Call the payer and get the accumulator detail: cap amount, period, and the list of dates counted. Compare it to your records and the patient's history elsewhere.
- If the count is wrong, dispute it with your visit log and the payer's own EOBs; miscounts get corrected without formal appeal more often than not.
- If the count is right, check for an exception path. Some plans extend therapy benefits with documentation of continued medical necessity, and Medicare's therapy threshold works this way with the KX modifier.
- If no exception applies, move the balance to the patient if your contract and prior notice allow, or write it off if they do not.
How do you prevent CO-119 denials?
Verify benefit maximums, not just coverage, for every therapy, chiropractic, behavioral health, and vision patient, and re-check accumulators monthly for long courses of care. Build countdown fields into your scheduling system so the front desk sees "3 visits remaining" at check-in. Where prior authorization governs visit blocks, treat the authorized units and the benefit cap as separate limits; plenty of claims clear the auth and still die on the cap. Collect a signed financial waiver before furnishing services you know exceed the maximum.
Can you appeal a CO-119 denial?
Yes, in two lanes. Lane one: the counter is wrong; supply your date-of-service log and the payer's own payment history and demand a recount. Lane two: medical exception; submit clinical documentation showing why continued care is medically necessary under the plan's extension policy. Confirm the deadline with the appeal deadline calculator, draft with the appeal letter generator, and use the denial code lookup to interpret the remark codes, which usually say whether the cap is dollar, visit, or occurrence based.
Frequently asked questions
The patient used up a benefit cap, a maximum number of visits, units, or dollars the plan allows for a period or occurrence, and this claim landed past the limit. Typical examples: 20 physical therapy visits per year, 1 routine eye exam per 24 months, or an annual chiropractic cap.
Often yes, because services beyond a benefit maximum are usually patient responsibility, but two things matter: whether your payer contract requires advance notice for balance billing, and whether the remittance used group PR or CO. With CO and no signed waiver, many contracts force a write-off.
Ask for the benefit accumulator during verification, by phone or in the 271 response where supported. Log the count, the date, and the reference number. Payer counters also include visits used at other providers, which is why your internal tally alone is never enough.
Sources & further reading
Reviewed by the ImmediCare Solutions RCM team
Certified billers and coders handling claims across 50+ specialties nationwide. This entry is reviewed against current payer policy and CMS rules. Last review: Jul 5, 2026.
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