Periorbital osteotomies for orbital hypertelorism using a combined intra- and extracranial approach, with bone grafts to reposition the orbits and fill bony defects.
Verified May 8, 2026 · 6 sources ↓
- Medicare
- $2,175.73
- Total RVUs
- 65.14
- Global, days
- 90
- Region
- Other
Documentation requirements
What must appear in the operative or office note to support the claim.
Source · Editorial brief grounded in 6 cited references ↓
- Explicitly document the combined intra- and extracranial approach by name — notes stating only 'periorbital osteotomies' risk downcode to 21260.
- Record the indication: confirmed diagnosis of orbital hypertelorism with clinical or radiographic measurement of interorbital distance.
- Document bone graft use, including graft type (autograft vs. allograft), harvest site, and placement locations for each defect filled.
- Identify all surgeons and their roles when a surgical team (modifier 62 or 66) is used; include each physician's operative dictation.
- Note intraoperative findings, osteotomy sites, extent of orbital mobilization, and final orbital position achieved.
- Preoperative imaging (CT with 3D reconstruction) should be referenced in the operative note to support medical necessity.
Applicable modifiers
Modifiers commonly billed with this code.
Source · AMA CPT modifier descriptors · CMS NCCI Policy Manual
What this code covers
Source · Editorial summary grounded in 6 cited references ↓
CPT 21261 describes surgical correction of orbital hypertelorism — a congenital condition in which the orbits are abnormally wide apart — performed through a combined intracranial and extracranial approach. The surgeon performs periorbital osteotomies to mobilize and reposition both orbits, then uses bone grafts (autograft harvest included) to reconstruct and stabilize the resulting defects. This is the more complex sibling of 21260 (extracranial approach only); 21261 requires coordinated neurosurgical and craniofacial access, making it a true surgical team procedure in most settings.
The 90-day global period applies. All routine postoperative management, wound care, and follow-up imaging interpretation tied to the index procedure are bundled through day 90. Separate billing for unrelated conditions during that window requires modifier 24 (E/M) or 79 (procedure). An unplanned return to the OR for a complication directly related to the hypertelorism repair uses modifier 78.
Because this procedure involves both intracranial and extracranial dissection, operative notes must clearly document the combined approach — not just "periorbital osteotomies" — to justify 21261 over 21260. Bone graft harvest and use must also be explicitly documented; without it, payers may downcode or deny.
RVU & reimbursement
Component RVUs and Medicare national rate. Actual payment varies by GPCI locality.
Source · CMS Physician Fee Schedule, RVU26A · January 2026
| Work RVU | 33.22 |
| Practice expense RVU | 25.75 |
| Malpractice RVU | 6.17 |
| Total RVU | 65.14 |
| Medicare national rate | $2,175.73 |
| Global period | 90 days |
Payment by site of service
Medicare pays different rates by setting. HOPD typically pays substantially more than ASC for the same procedure.
Source · CMS OPPS Addendum B·ASC HCPCS payment rates·2026
| Setting | Medicare rate (national) |
|---|---|
Office (PFS non-facility) Procedure performed in physician's office | $2,175.73 |
HOPD (APC 5165) Hospital outpatient department | $6,048.05 |
ASC (PI G2) Ambulatory surgical center (freestanding) | $3,025.62 |
Common denial reasons
The recurring reasons claims for CPT 21261 get rejected.
Source · Editorial brief grounded in CMS NCCI edits, AAOS coding appeals, and cited references ↓
- Operative note describes only an extracranial approach, causing downcode to 21260.
- Missing or vague bone graft documentation — payers deny when graft harvest and placement are not explicitly described.
- Medical necessity not established — denial when preoperative imaging findings or clinical measurements supporting hypertelorism are absent from the record.
- Incorrect modifier use when billing with a co-surgeon: missing modifier 62 or incomplete dual operative notes.
- Global period conflict — services billed by the same surgeon during the 90-day global window without appropriate modifier 24, 78, or 79.
Frequently asked questions
Source · Generated from the editorial pipeline, verified against 6 cited references ↓
01What is the difference between 21260 and 21261?
02Can 21261 and 21263 be billed together?
03Is a co-surgeon arrangement appropriate for 21261?
04What ICD-10 diagnosis code supports 21261?
05Is modifier 50 ever appropriate for 21261?
06What does the 90-day global period mean practically for 21261?
07How does site of service affect reimbursement for 21261?
Sources & references
Editorial content was developed using the following public sources. Last verified May 8, 2026.
- 01CMS Physician Fee Schedule 2026
- 02aapc.comhttps://www.aapc.com/codes/cpt-codes/21261
- 03emedny.orghttps://www.emedny.org/providermanuals/physician/pdfs/physician%20procedure%20codes%20sect5.pdf
- 04mdclarity.comhttps://www.mdclarity.com/cpt-code/21261
- 05findacode.comhttps://www.findacode.com/cpt/21261-cpt-code.html
- 06cms.govhttps://www.cms.gov/medicare/coding-billing/national-correct-coding-initiative-ncci-edits/medicare-ncci-faq-library
Mira AI Scribe
Mira's AI scribe captures the surgical approach (combined intra- and extracranial), osteotomy sites, orbital mobilization extent, bone graft type and harvest site, and final orbital positioning from dictation. This directly prevents the most common downcode scenario — notes that omit the intracranial component and result in payers paying 21260 rates instead of 21261.
See how Mira captures CPT 21261 documentation