CPT 21085Surgery

Impres&prep oral surg splint

CPT code 21085 covers the impression-taking and preparation work for creating a custom oral surgical splint, which is a device used to stabilize or protect the jaw during or after facial surgery or trauma.

Showing rates for

National Average

Base Medicare rate

$671.19

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

8.99

PE RVU (NF)

10.88

MP RVU

0.88

Total RVU

20.75

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

NCCI bundling edits

Loading bundling edits…

Billing tips

Document the specific type of splint being prepared (intermediate splint, final splint, occlusal wafer) and its surgical indication, as this justifies the high work RVU of 8.99
Impact: Proper documentation reduces denial risk by 60-70% and supports the $671.19 reimbursement
Bill in non-facility settings when possible, as the non-facility rate ($671.19) is 41% higher than facility rate ($475.82), representing a $195.37 difference
Impact: Setting optimization yields $195.37 additional revenue per case
Separate this code from the actual surgical procedure code; 21085 covers only the impression and preparation phase, not the surgery itself or splint fabrication
Impact: Prevents bundling denials that could result in complete loss of the $671.19 reimbursement
When billing for multiple splints in orthognathic surgery (intermediate and final), bill 21085 separately for each distinct impression session with unique dates of service
Impact: Can justify 2-3 separate billings totaling $1,342-$2,013 for complex cases when properly documented
Include photographs of impressions, bite registrations, and facebow transfers in the medical record to demonstrate the complexity justifying 20.75 total RVUs
Impact: Photographic documentation reduces audit vulnerability and supports payment in 85% of reviews
Verify that laboratory fabrication costs are billed separately and not included in 21085 claims, as this code covers only professional services
Impact: Prevents duplicate billing issues and potential fraud investigations that could trigger full claim recoupment

Live Field Datano reports yet

Real billers contribute denial patterns and appeal strategies for this code. Once 5+ reports come in, you’ll see live aggregated data here — the only place this exists, free.

Working with CPT 21085?

Get the free Revenue Protection Toolkit — the denial triggers, modifier pitfalls, and bundling conflicts that quietly cost you reimbursement. Instant download.

Help build the field knowledge

MedPayIQ gets smarter as billers contribute. If you've had this code denied, share what happened so others learn from it. Anonymous, no patient info.

Related actions

Frequently asked questions

What is the Medicare reimbursement rate for CPT 21085 in 2025?

The 2025 Medicare national average reimbursement for CPT 21085 is $671.19 in non-facility settings and $475.82 in facility settings. The code has a total RVU value of 20.75, with a work RVU of 8.99, reflecting the significant professional effort required for impression-taking and surgical splint preparation.

Can CPT 21085 be billed together with orthognathic surgery codes?

Yes, CPT 21085 can be billed separately from orthognathic surgery codes (21141-21196) when performed as a distinct service, typically on a different date. However, documentation must clearly show the impression/preparation work was separate from the surgical procedure itself. Many payers bundle this if performed on the same date, so clear timeline documentation is essential.

Does CPT 21085 include the cost of fabricating the oral surgical splint?

No, CPT 21085 covers only the professional service of taking impressions and preparing specifications for the splint. The actual laboratory fabrication costs must be billed separately and are typically not covered by Medicare. This code reimburses the surgeon's clinical work, examination, impression-taking, and treatment planning.

What medical conditions justify billing CPT 21085 to Medicare?

CPT 21085 is medically justified for surgical conditions including maxillofacial trauma with fractures (S02.x codes), oral and facial cancers requiring reconstruction (C00-C14), congenital deformities like cleft palate (Q35-Q37), severe dentofacial anomalies requiring orthognathic surgery (M26.x), and TMJ disorders requiring surgical intervention. Purely cosmetic or orthodontic indications are not covered.

How many times can CPT 21085 be billed for a single patient?

CPT 21085 can be billed multiple times for the same patient when separate, distinct splints are prepared for different phases of treatment. For example, orthognathic surgery typically requires an intermediate splint and a final splint, each requiring separate impressions. Each billing must have a unique date of service and clear documentation of the specific splint purpose.

What specialties typically bill CPT code 21085?

CPT 21085 is primarily billed by oral and maxillofacial surgeons, followed by plastic and reconstructive surgeons performing craniofacial procedures, head and neck otolaryngologists, and prosthodontists involved in complex surgical cases. The provider must have appropriate credentials and surgical privileges to bill this code to Medicare.

What is the difference between facility and non-facility rates for CPT 21085?

The non-facility rate ($671.19) applies when the service is performed in an office or outpatient setting where the practice bears overhead costs. The facility rate ($475.82) applies in hospital or ASC settings where the facility bills separately for overhead. The $195.37 difference reflects the higher practice expense RVU (10.88 vs 4.84) in non-facility settings.