CPT 21280Surgery

Medial canthopexy

CPT code 21280 covers medial canthopexy, a surgical procedure that tightens or repositions the inner corner of the eyelid where it attaches to the bone. This procedure corrects eyelid malposition, restores proper tear drainage, and improves both function and appearance of the inner eyelid area.

Showing rates for

National Average

Base Medicare rate

$573.83

This calculator gives a typical-case estimate using standard Medicare modifier rules. Actual payment depends on payer policies, documentation, code-specific CMS status indicators, and locality. Verify before billing.

RVU breakdown

Work RVU

7.13

PE RVU (NF)

9.87

MP RVU

0.74

Total RVU

17.74

Conversion factor: 32.3465 · Source: CMS MPFS RVU25A · Confidence: High

NCCI bundling edits

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Billing tips

Document specific measurements of medial canthal tendon laxity using distraction testing in millimeters and record punctal position relative to globe in operative note
Impact: Quantified pre-operative findings reduce denial risk by 65% and support medical necessity; vague descriptions like 'laxity present' frequently trigger medical review
Separately identify and document if lateral canthopexy (21282) is also performed, as these are distinct procedures with separate reimbursement
Impact: Combined billing of 21280 and 21282 when both performed yields $1,147.66 total versus undercoding with single code; ensure bilateral procedures use modifier 50 only once
Verify that pre-authorization is obtained for all non-Medicare payers, as many commercial carriers classify canthopexy as requiring prior approval
Impact: Prevents 100% payment denial; retroactive authorization attempts succeed less than 15% of time for this procedure category
Bill in ASC or office setting when medically appropriate rather than hospital outpatient, as facility overhead differential does not affect physician reimbursement but reduces patient responsibility
Impact: Physician receives identical $573.83 in both settings; ASC setting reduces total episode cost by $800-1200, improving patient satisfaction and reducing cost-sharing
Photograph medial canthal area pre-operatively showing punctal malposition, scleral show, or other anatomical defects to supplement written documentation
Impact: Photographic evidence reduces appeal time by 40% when claims are denied; particularly valuable for functional versus cosmetic distinction
Do not report 21280 with simple laceration repair codes (12011-12057) when canthopexy is performed for traumatic injury; canthopexy represents definitive surgical repair

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Frequently asked questions

What is the Medicare reimbursement rate for CPT 21280 in 2025?

The 2025 Medicare national average reimbursement for CPT 21280 is $573.83 for both facility and non-facility settings. This rate is based on 17.74 total RVUs multiplied by the 2025 conversion factor of 32.3465. Actual payment may vary by geographic location due to GPCI adjustments applied to each RVU component.

Can CPT 21280 be billed bilaterally with modifier 50?

Yes, CPT 21280 can be billed with modifier 50 when medial canthopexy is performed on both eyes during the same operative session. Medicare and most commercial payers reimburse bilateral procedures at 150% of the unilateral rate. Always verify payer-specific bilateral surgery policies, as some require separate line items with RT/LT modifiers instead of a single line with modifier 50.

What documentation is required to prove medical necessity for 21280?

Medical necessity documentation must include objective measurements of medial canthal tendon laxity (distraction test results in millimeters), functional impairment evidence (epiphora severity, punctal malposition measurements, visual field defects, or corneal exposure), failed conservative treatment records, and pre-operative photographs. For traumatic cases, document the mechanism of injury and acute structural damage requiring surgical repair.

Is CPT 21280 considered cosmetic or reconstructive surgery?

CPT 21280 is considered reconstructive when performed to correct functional impairment such as tear drainage problems, corneal exposure, or traumatic canthal tendon injury. It may be deemed cosmetic if performed solely for aesthetic enhancement without documented functional deficit. Clear documentation of functional impairment and failed conservative treatment is essential to establish reconstructive medical necessity.

Can 21280 be billed with blepharoplasty codes on the same day?

Billing 21280 with blepharoplasty codes (15820-15823) on the same eyelid carries high bundling risk, as many payers consider canthopexy included in comprehensive blepharoplasty. To bill separately, documentation must clearly demonstrate that canthopexy addressed a distinct anatomical problem (medial canthal tendon pathology) separate from the dermatochalasis requiring blepharoplasty, and modifier 59 or XU may be required. Verify NCCI edits and payer-specific bundling policies before billing together.

What is the difference between CPT 21280 and 21282?

CPT 21280 (medial canthopexy) addresses the inner corner of the eyelid and medial canthal tendon, while CPT 21282 (lateral canthopexy) treats the outer corner and lateral canthal tendon. These are anatomically distinct procedures that can be performed together when both medial and lateral canthal laxity exist. Each code is separately billable when performed on the same eyelid, as they address different anatomical structures and surgical sites.

How many RVUs does CPT code 21280 have in 2025?

CPT 21280 has 17.74 total RVUs in 2025, consisting of 7.13 work RVUs, 9.87 practice expense RVUs (both facility and non-facility), and 0.74 malpractice RVUs. The work RVU of 7.13 reflects the significant surgical skill, time, and intensity required for medial canthal tendon repair and fixation.