OptiCodeHow to Handle Optometry Claim Denials: Common Reasons & Fixes
Claim denials are one of the most costly and time-consuming problems in optometry medical billing. Understanding why claims get denied — and how to prevent or correct each denial type — is essential for any practice that wants to protect its revenue cycle.
Why Optometry Claims Get Denied
Optometry practices deal with a unique mix of medical and vision insurance billing, which creates multiple denial risk points. Common triggers include using the wrong payer ID, billing codes that payers consider bundled, missing or incorrect modifiers, diagnosis codes that don't satisfy LCD coverage requirements, and billing inside a surgical global period. Below are the most frequent denial types and how to address them.
Bundled / Inclusive Procedure
Why it happens
Two or more CPT codes were billed together, but payer policy — often based on NCCI edits — considers one of them bundled into the other.
How to fix or appeal
Check the code pair with a bundling tool like OptiBundle™ before submitting. Add modifier -59, -XS, -XE, or -XU only when there is a documented clinical reason the services are truly distinct and separate. Do not use modifiers simply to bypass edits without clinical justification.
Prevention
Run a bundling check on every claim before submission using OptiBundle™.
Service Not Consistent with Modifier
Why it happens
A modifier was used that doesn't match the service billed, or a required modifier was omitted. Common in optometry when billing an E/M visit and a procedure on the same day without modifier -25.
How to fix or appeal
Review modifier requirements for the code. For same-day E/M + procedure, ensure modifier -25 is on the E/M code if the visit was a significant, separately identifiable service. For bilateral procedures, use -50, -RT, or -LT as required by the payer.
Prevention
OptiScrub™ flags common modifier issues before claim submission.
Diagnosis Not Covered
Why it happens
The ICD-10 diagnosis code used does not meet the payer's coverage criteria for the procedure billed. This often happens with diagnostic tests like OCT, visual fields, or retinal imaging that require specific diagnoses under LCD policy.
How to fix or appeal
Review the payer's LCD (Local Coverage Determination) for the procedure. Use a covered diagnosis code that accurately reflects the patient's documented condition. Do not change the diagnosis to a covered code unless it is clinically accurate and documented.
Prevention
Use OptiLink™ to look up LCD coverage requirements before billing diagnostic tests.
Non-Covered Service
Why it happens
The service billed is not a covered benefit under the patient's plan. This is common with refraction (92015) billed to medical insurance, or optical services billed to medical when only vision benefits apply.
How to fix or appeal
Verify benefits before the visit. Know whether the encounter is medical or routine and bill the appropriate plan. Have patients sign an ABN (Advance Beneficiary Notice) for Medicare patients when you expect a service may not be covered.
Prevention
Confirm coverage and plan type at eligibility verification.
Claim Rejected — Wrong Payer
Why it happens
The claim was submitted with the wrong payer ID or routing information, causing it to be rejected before adjudication or sent to the wrong payer entirely.
How to fix or appeal
Resubmit with the correct payer ID. Use a payer ID lookup tool to verify the correct electronic payer ID before submitting. Some carriers have multiple IDs for different product lines, states, or claim types.
Prevention
Use OptiPayer™ to look up accurate payer IDs before submitting any new payer.
Coordination of Benefits / COB Issue
Why it happens
The claim was denied because the patient has multiple insurance plans and the primary/secondary designation was incorrect, or COB information was missing.
How to fix or appeal
Verify which plan is primary at check-in. Submit to the primary payer first, then bill the secondary payer with the primary's explanation of benefits (EOB). Check your billing system's COB fields.
Prevention
Collect and verify COB information at every visit, especially for Medicare beneficiaries with supplement plans.
Service Billed in Global Period
Why it happens
A post-operative follow-up visit or related service was billed within the global period of a surgical procedure, which payers consider already included in the surgical fee.
How to fix or appeal
Determine the global period end date for the procedure. If the visit falls inside the global period and is related to the surgery, it typically cannot be billed separately. If the visit is for an unrelated problem, use modifier -24.
Prevention
Use OptiGlobal™ to calculate the global period for any procedure before scheduling post-op billing.
Best Practices to Reduce Optometry Claim Denials
- →Verify eligibility and benefits at every visit. Confirm which plan is primary, whether vision or medical benefits apply, and whether the patient's plan covers the planned services.
- →Scrub claims before submission. Use a claim scrubbing tool to catch modifier errors, bundling issues, and LCD problems before a claim leaves your office.
- →Verify payer IDs regularly. Insurance companies change their electronic routing IDs. An incorrect payer ID sends your claim to the wrong destination or causes an immediate rejection.
- →Track and trend your denials. If a particular code pair is consistently denied by a specific payer, that's a signal to update your billing workflow — not just rework individual claims.
- →Appeal denials promptly. Every payer has an appeals process with deadlines (typically 60–180 days from the denial date). Track your denials and work them within the filing window.
Related Resources
Catch Denials Before They Happen
OptiScrub™ checks your claims for bundling issues, modifier errors, LCD coverage problems, and more — so you catch denials before the payer does.