CPT code 21280: Medial canthopexy RVU values and reimbursement

Key takeaways

CPT code 21280 reports medial canthopexy, the tightening or repositioning of the medial canthal tendon at the inner corner of the eyelid.

The official descriptor is medial canthopexy, not a full-thickness eyelid repair. Eyelid laceration closure belongs to CPT 67930 and 67935.

The descriptor carries a separate procedure designation, so bill 21280 on its own only when the canthopexy is a distinct service that day.

CPT 21280 carries 15.70 total RVUs in 2026, or roughly $524 nationally. CMS lists the same RVUs for office and facility settings.

Practice management software like Pabau keeps procedure codes, operative notes, and claim status in one system instead of three.

CPT code 21280 reports medial canthopexy, a repair that tightens or repositions the medial canthal tendon at the inner corner of the eyelid.

The code sits in the musculoskeletal head section of CPT, alongside facial reconstruction codes. It is not an eyelid repair code, and that placement explains most of the miscoding around it.

Below you will find the official descriptor, 2026 RVU values and Medicare rates, modifiers, supporting ICD-10-CM codes, and the documentation payers ask for.

It also settles a point that several reference pages publish incorrectly. CPT 21280 has no facility versus non-facility payment difference, and the RVU table below shows why.

What CPT code 21280 covers

The medial canthus is the inner corner of the eye, where the upper and lower eyelids meet. The medial canthal tendon anchors that junction to the lacrimal bone.

When laxity, malposition, or trauma weakens that anchor, the lower lid drifts and the punctum lifts away from the eye surface. Tearing follows, and the patient reports a constantly watery eye. Medial canthopexy tightens or repositions the tendon to restore the normal anatomy.

The code is maintained by the American Medical Association (AMA) and falls in the Repair, Revision, and/or Reconstruction subsection of the Head codes. Oculoplastic, orbital, and plastic surgeons at plastic surgery practices report it, usually as a primary procedure.

Official descriptor and the separate procedure designation

The official descriptor for CPT code 21280 reads: Medial canthopexy (separate procedure). That parenthetical is not incidental. It signals that the service is ordinarily a component of a larger procedure. Bill it independently only when it was performed as a distinct service.

In practice, CPT 21280 stands alone when medial canthopexy is the sole surgical objective of the encounter. When it accompanies a wider periocular reconstruction, National Correct Coding Initiative (NCCI) edits may prevent separate payment unless a qualifying modifier is appended and documented.

Codes CPT 21280 is confused with

A recurring error is treating 21280 as an eyelid repair code. The descriptor covers canthal tendon work only, and closing a lid laceration is reported from the ophthalmology section instead.

Read the operative note for what was actually done to the tendon. If the surgeon sutured a wound rather than repositioning the canthal anchor, 21280 is the wrong code.

Confirm every descriptor against the current CPT manual before you submit. Short descriptors published on reference sites drop the qualifying language that decides the code.

RVU values for CPT code 21280

Relative Value Units (RVUs) form the basis of Medicare’s payment formula. Three components combine into the total: Work RVU for physician effort, Practice Expense RVU for overhead, and Malpractice RVU for liability. The 2026 values published in the CMS Physician Fee Schedule are below.

That table has one value column, and that is the detail worth flagging. CMS assigns CPT 21280 the same practice expense RVU in an office and in a facility, so there is a single total rather than two.

Reference pages that publish a reduced facility total for this code are quoting the general pattern for surgical codes rather than the current file. If your fee schedule shows two different totals for 21280, the schedule is wrong.

The values also moved. The 2025 file listed 7.13 work, 9.87 practice expense, and 0.74 malpractice RVUs, for 17.74 total. Quoting last year’s number overstates the 2026 allowable by roughly 9%.

Confirm the current values with the CMS lookup tool or the FastRVU RVU lookup, then apply your locality’s geographic practice cost index. Practices billing this code through aesthetic EMR software can compare the published work RVU against actual payments to flag underpayments early.

Medicare reimbursement for medial canthopexy

Medicare pays CPT 21280 by multiplying the geographically adjusted RVUs by the annual conversion factor. At the 2026 factor of $33.4009, the national estimate is about $524.39.

Because the RVUs do not vary by setting, that figure holds in an office, a hospital, and an ambulatory surgery center. Place of service still belongs on the claim, but it does not change the physician allowable for this code.

Both the RVU file and the conversion factor change each January. Confirm the current-year figure for your MAC jurisdiction before you submit, and reprice any standing patient estimates at the same time.

Modifiers for CPT 21280

Appending the wrong modifier, or omitting a required one, is among the most common reasons CPT 21280 claims are denied or reduced. The table below covers the modifiers most relevant to this code.

Modifier -59 requires supporting documentation. The operative note must establish that the procedures addressed different anatomical sites or different indications, or were performed through separate incisions. A generic operative report will not survive a payer audit.

CPT 21280 vs. CPT 21282: Medial vs. lateral canthopexy

CPT 21280 and CPT 21282 are the paired canthopexy codes. Swapping them produces a denial and a corrected claim delay, and the distinction between them is purely anatomical.

When both procedures are performed in one session, the code with the higher work RVU is normally the primary one. That is 21280 at 6.95, so modifier -51 belongs on 21282. Check the current NCCI edit table for a column one and column two pairing before billing both.

Facial trauma can also pair a canthopexy with a fracture repair from the same CPT section, such as CPT 21343. Check the NCCI edits for that pairing before you put both codes on one claim.

ICD-10-CM codes that support medical necessity

Every CPT 21280 claim needs a diagnosis that establishes functional impairment. A cosmetic request with no structural or functional diagnosis will not clear Medicare or most commercial payers.

Because the code is reported per side, the diagnosis laterality also has to match the modifier on the claim line. Trauma claims often carry a head injury diagnosis such as ICD-10 S06.6X1D as well. The examples below are the pairings that show up most often on medial canthopexy claims.

Code to the highest level of specificity your record supports, including laterality and the encounter character. Unspecified codes invite a request for records even when the surgery was clearly necessary.

Where the indication is purely aesthetic, there is no supporting diagnosis to find. Report Z41.1 for an encounter for cosmetic surgery and handle the case as a non-covered service.

Billing guidelines and documentation requirements

Documentation quality is what separates a paid claim from a request for records that stalls payment by 30 days or more. The requirements below apply broadly across payers.

Required documentation elements

• Establish medical necessity in the operative note. State the presenting diagnosis, such as medial canthal tendon laxity, post-traumatic malposition, or epiphora from punctal displacement.
• Record the functional impact. Note how the condition affects vision or ocular surface health, in the patient’s own reported terms where possible.
• Document the surgical technique. Specify that a medial canthopexy was performed, the method used, and the anatomical landmarks addressed.
• Support the separate procedure rule. If another surgical code is on the claim, explain why the canthopexy was distinct rather than an integral step.
• Apply NCCI bundling awareness. Check the edit tables before every claim that pairs 21280 with eyelid reconstruction, entropion or ectropion repair, or orbital procedures.
• Use laterality modifiers consistently. Append -RT or -LT to identify the side treated, and confirm the diagnosis laterality matches.

The 90-day global period

CPT 21280 carries a 090 global period, so routine post-operative visits for 90 days are already paid for in the surgical fee. Billing an office visit inside that window without a qualifying modifier produces a denial.

Those visits still belong in the record, and a standard patient discharge form keeps that documentation consistent.

A return to the operating room for a related complication takes modifier -78. An unrelated procedure in the same window takes -79. Unrelated evaluation and management inside the window takes -24 on the visit code.

Common denial reasons

• No functional diagnosis on the claim. The record describes an aesthetic concern, so the payer treats the surgery as cosmetic.
• Bundling with a larger periocular repair. The separate procedure designation applies and no distinct-service modifier was appended.
• Laterality mismatch. The modifier says right and the diagnosis code says left, or the modifier is missing entirely.
• Post-operative visit billed inside the global period. Routine follow-up within 90 days is included in the surgical payment.
• Missing prior authorization. Most commercial and Medicare Advantage plans require it for elective periocular surgery.
• Stale fee schedule. The practice quoted 2025 rates, so the posted payment looks like an underpayment when it is not.

For practices building out HIPAA-compliant documentation, a structured operative note template covering these elements reduces variability between providers. Digital consent and intake forms capture the pre-operative functional complaints that support medical necessity later.

Practices expanding into periocular surgery should also review the regulatory steps involved in opening a cosmetic surgery clinic. Credentialing and facility requirements both affect how surgical codes get billed.

Is medial canthopexy covered by insurance?

Medicare and most commercial insurers cover medial canthopexy when the operative indication is functional, and exclude it when the indication is aesthetic. The medical record decides which category the case falls into.

Covered indications typically include canthal tendon laxity causing epiphora, punctal eversion that damages the ocular surface, and post-traumatic canthal displacement affecting visual function. Purely cosmetic improvement of the inner canthal angle is not covered.

• Functional coverage criteria. Documented canthal tendon laxity on exam, a measured lower lid laxity result, a functional complaint, and failure of conservative management where applicable.
• Prior authorization. Required by most Medicare Advantage and commercial plans. Submit the operative plan, clinical photos, and exam findings that document functional impairment.
• Cosmetic exclusion. Bill as a non-covered service and tell the patient their out-of-pocket responsibility before the procedure.

Submitting a functional case without prior authorization does not guarantee a denial, but it raises audit risk and slows resolution if one follows. Practice management tools for plastic surgery can flag procedures needing authorization at the scheduling stage, before the patient arrives.

How Pabau supports CPT 21280 billing workflows

Reference sites tell you what CPT code 21280 means. They do not help you get it onto a claim, attached to the right patient record, with the correct modifier, on the day of service.

Pabau’s claims management software links procedure codes to patient records and invoices inside the system your front desk and clinical team already use. When a surgeon finishes a medial canthopexy, the code, modifier, and supporting note are captured in one workflow.

For plastic surgery EMR and oculoplastic practices, Pabau’s reporting lets you benchmark actual payments against the published Medicare rate. A consistent shortfall on 21280 shows up in the data instead of disappearing into year-end write-offs.

Groups that run dermatology or medical spa service lines alongside surgery can manage all of them from one platform. Procedure code management stays consistent across service lines, with no duplicate data entry.

Manage surgical CPT codes inside your practice workflow

Pabau links CPT 21280 and every other procedure code directly to patient records, invoicing, and clinical documentation. No switching between a reference site and your practice management system.

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Conclusion

CPT code 21280 is a medial canthopexy code, not an eyelid repair code, and it pays one national rate regardless of setting. Getting both of those facts right removes two of the most common sources of error on these claims.

What remains is documentation. The separate procedure designation, the NCCI edits, the 90-day global period, and the functional versus cosmetic question all turn on what the operative note says.

Pabau’s claim management and documentation tools keep that record inside your clinical workflow instead of across disconnected systems. Book a demo to see how Pabau handles surgical code management for oculoplastic practices.

Continue your research

Assessing a patient’s eyes before periocular surgery? Neurological eye exam sets out what the exam covers and what its findings point to.

Coding a foreign body removal from a trauma wound? CPT 10121 walks through the complicated variant, its RVUs, and the documentation payers expect.

Billing a code that no longer exists? CPT 19324 explains what replaced the deleted mammaplasty code and how to report the work now.

Monitoring a head injury patient before facial repair? Neurological vital signs covers assessment, GCS scoring, and when to escalate.

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