{"id":29177,"date":"2026-04-15T11:00:55","date_gmt":"2026-04-15T11:00:55","guid":{"rendered":"https:\/\/www.medicalbillersandcoders.com\/blog\/?p=29177"},"modified":"2026-05-11T11:03:56","modified_gmt":"2026-05-11T11:03:56","slug":"what-is-causing-optometry-claim-denials","status":"publish","type":"post","link":"https:\/\/www.medicalbillersandcoders.com\/blog\/what-is-causing-optometry-claim-denials\/","title":{"rendered":"What Is Causing Optometry Claim Denials \u2014 and What’s the Revenue Impact?"},"content":{"rendered":"

Optometry claim denials<\/strong> are claim rejections issued by insurance payers when an eye care provider’s submission fails to meet documentation, coding, or medical necessity standards \u2014 and for multi-provider optometry groups, the cumulative revenue impact can easily exceed six figures annually.<\/p>\r\n

That sentence above is not a warning. It is a reality that revenue cycle directors and practice administrators are navigating right now \u2014 and it is getting more complex, not less.<\/p>\r\n

This blog breaks down exactly what is causing denials in optometry, what the financial stakes look like using verified government data, and what a structured fix actually requires.<\/p>\r\n

The Revenue Stakes Are Higher Than Most Practices Realize<\/h2>\r\n

In FY 2025, CMS reported a Medicare Fee-for-Service improper payment rate of 6.55%, totaling $28.83 billion<\/strong> \u2014 down from $31.70 billion in FY 2024. That figure covers all specialties, but optometry has drawn specific OIG scrutiny that practices cannot afford to ignore.\u00a0<\/p>\r\n

In December 2025, the OIG released Report A-05-24-00009<\/strong>, a completed audit examining 15 optometrists providing services in nursing facilities. The findings were stark: all 399 lines of high-level E\/M services billed for the 225 sampled enrollees failed to meet Medicare requirements<\/strong>.<\/p>\r\n

Medicare overpaid an estimated $3,059,204<\/strong> \u2014 for conditions as routine as dry or itchy eyes billed under codes 99309 and 99310, which are reserved for high-complexity cases.\u00a0<\/p>\r\n

This is not an isolated finding. It is a signal that CMS contractors are now actively looking at optometry E\/M coding \u2014 and practices that have not audited their own claims are carrying risk they have not quantified.<\/p>\r\n

The Triple Threat to Optometry Revenue Integrity<\/h2>\r\n

Most optometry claim denials trace back to three structural problems. Understanding them is the first step toward fixing them.<\/p>\r\n

1. The Medical vs. Routine Exam Confusion<\/h3>\r\n

This is the most expensive and most preventable denial category. A routine refraction or general vision check cannot be billed to a medical plan without a clearly documented medical diagnosis driving the visit.<\/p>\r\n

If the visit note does not explicitly establish a condition \u2014 glaucoma, diabetic retinopathy, macular degeneration \u2014 and link it to the service performed, the claim will be denied. Payers have automated edits for exactly this pattern.<\/p>\r\n

2. ICD-10 Specificity Failures<\/h3>\r\n

Payers no longer accept “unspecified”<\/em> diagnosis codes as justification for services. Using H25.9 (age-related cataract, unspecified) instead of H25.11 (cortical age-related cataract, right eye) triggers immediate denial flags. Documentation must capture laterality, condition type, and severity \u2014 every time, on every claim.<\/p>\r\n

3. Modifier Errors That Quietly Kill Revenue<\/h3>\r\n

Modifier 25 \u2014 used when a separately identifiable E\/M service is performed on the same day as a procedure \u2014 is one of the most misapplied modifiers in optometry billing. The OIG’s 2026 Work Plan flags modifier overuse as a high fraud-risk indicator.<\/p>\r\n

Modifier 59 errors, duplicate claim resubmissions, and missing bilateral modifiers (RT\/LT or CPT modifier 50) add up fast across high-volume practices. CMS publishes its billing guidance for optometrists at nursing facilities here: CMS MLN Fast Facts \u2013 Optometry Services at Nursing Facilities<\/a>.<\/p>\r\n

E\/M Codes vs. Eye Codes: When to Use Which<\/h2>\r\n

One of the most common root causes of optometry claim denials is selecting the wrong code family. Here is a side-by-side reference:<\/p>\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Feature<\/strong><\/td>\r\nE\/M Codes (99202\u201399215)<\/strong><\/td>\r\nEye Codes (92002\u201392014)<\/strong><\/td>\r\n<\/tr>\r\n
Basis for Selection<\/td>\r\nMedical Decision Making (MDM) or physician time<\/td>\r\nNumber of exam elements performed (Intermediate vs. Comprehensive)<\/td>\r\n<\/tr>\r\n
Typical Use Case<\/td>\r\nManaging active conditions \u2014 glaucoma, diabetic retinopathy, injuries<\/td>\r\nInitiation of diagnostic work or routine medical eye check<\/td>\r\n<\/tr>\r\n
Documentation Requirement<\/td>\r\nHistory, exam, and MDM levels must be explicitly documented<\/td>\r\n3\u20139 specific elements: visual acuity, pupils, lids, retina, etc.<\/td>\r\n<\/tr>\r\n
Denial Risk<\/td>\r\nHigh \u2014 if MDM complexity is overstated or not documented<\/td>\r\nModerate \u2014 if elements are counted but not linked to a diagnosis<\/td>\r\n<\/tr>\r\n
Reimbursement Model<\/td>\r\nVariable \u2014 based on complexity and time documented<\/td>\r\nFixed \u2014 based on Intermediate (92002\/92012) or Comprehensive (92004\/92014) level<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n

Three More Denial Triggers Your Team May Be Missing<\/h2>\r\n

1. Frequency Limit Violations on Diagnostic Tests<\/h3>\r\n

Medicare limits the frequency of diagnostic tests like OCT imaging (CPT 92133 for glaucoma, 92134 for retinal disease) to twice per year in most cases. Exceeding this without documented disease progression or a new clinical event results in denial \u2014 often without appeal.<\/p>\r\n

2. Place of Service Mismatches<\/h3>\r\n

Billing POS 11 (office) for services performed in a nursing facility (POS 32 or 42) or hospital outpatient department triggers automatic rejections. In 2026, this is one of the top system-generated denial reasons for optometry groups with multi-site operations or facility-based providers.<\/p>\r\n

3. Duplicate Claim Submissions<\/h3>\r\n

When a claim has not been paid within 20 days, billing teams often resubmit. If the original is still processing, the second submission is flagged as a duplicate and denied. A structured denial management workflow prevents this \u2014 but only if the team has real-time claim tracking in place.<\/p>\r\n

What a Structured Fix Looks Like<\/h2>\r\n

Practices that bring denial rates below 5% \u2014 the industry benchmark for high-performing groups \u2014 do not achieve that by working harder. They achieve it through systematic revenue integrity solutions applied at the front end of the claim cycle, not after the denial.<\/p>\r\n

The operational requirements include:<\/p>\r\n