Open treatment of a mandibular condylar fracture via external skin incision, with direct visualization and fixation of the condyle.

Verified May 8, 2026 · 7 sources ↓

Medicare: $723.80
Work RVU: 12.79
Global, days: 90
Region: Other

Drawn from CMSBedrockbillingAAPCMdclarity

Documentation requirements

What must appear in the operative or office note to support the claim.

Source · Editorial brief grounded in 7 cited references ↓

Specify the surgical approach by name (preauricular, retromandibular, submandibular, or transparotid) — operative notes that say 'standard approach' are audit targets
Document the degree of condylar displacement, angulation, and whether the condylar head is involved or dislocated from the fossa
Record fixation method and hardware used (plate type, screw size, number of fixation points)
Note intraoperative imaging or arthroscopic confirmation of reduction if performed
Document any facial nerve identification and protection maneuvers during dissection
Confirm laterality (left, right, or bilateral) explicitly in both the operative report and the diagnosis coding

Applicable modifiers

Modifiers commonly billed with this code.

Source · AMA CPT modifier descriptors · CMS NCCI Policy Manual

22 Increased complexity 50 Bilateral procedure 51 Multiple procedures 52 Reduced services 59 Distinct service 76 Repeat, same physician 77 Repeat, another physician 78 Unplanned return — related 79 Unrelated during global 80 Assistant surgeon LT Left side RT Right side

What this code covers

Source · Editorial summary grounded in 7 cited references ↓

CPT 21465 covers open surgical treatment of a mandibular condylar fracture — the portion of the lower jaw that articulates with the temporal bone to form the temporomandibular joint. Access is gained through a skin incision (typically preauricular, retromandibular, or submandibular approach), allowing direct reduction and rigid internal fixation of the condyle under visualization. This distinguishes it from closed treatment codes (21450–21453) and from 21470, which covers complicated mandibular fractures with multiple components.

The 90-day global period covers the day-before visit, the surgery itself, and all routine post-op management through day 90. Unrelated procedures in that window require modifier 79; an unplanned return to the OR for a related complication requires modifier 78. If the fracture is bilateral, use modifier 50 or append LT/RT as required by the payer. When the complexity of reduction — comminution, displacement, condylar head involvement — meaningfully increases operative time and work, modifier 22 is defensible with supporting operative note documentation.

This code sits in the musculoskeletal surgery section and carries over 1,000 NCCI PTP edits as the Column 1 code. Routine surgical components (exposure, wound closure, imaging guidance) are bundled. If an assistant surgeon scrubs, bill modifier 80 on their claim. Facial nerve monitoring billed separately on the same date may face bundling scrutiny — check current NCCI PTP edits before reporting it alongside 21465.

RVU & reimbursement

Component RVUs and Medicare national rate. Actual payment varies by GPCI locality.

Source · CMS Physician Fee Schedule, RVU26A · January 2026

Work RVU vs. total RVU

The work RVU (12.79) is the surgeon's own effort — the figure physician pay and productivity targets are built on. The total RVU (21.67) adds practice overhead and malpractice, and is what drives the Medicare payment below.

Work RVU	12.79
Practice expense RVU	7.42
Malpractice RVU	1.46
Total RVU	21.67
Medicare national rate	$723.80
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	$723.80
HOPD (APC 5165) Hospital outpatient department	$6,048.05
ASC (PI J8) Ambulatory surgical center (freestanding)	$3,833.49

Common denial reasons

The recurring reasons claims for CPT 21465 get rejected.

Source · Editorial brief grounded in CMS NCCI edits, AAOS coding appeals, and cited references ↓

Laterality not specified in the claim or operative report, causing payer rejection on RT/LT requirement
Bundling denial when imaging guidance or nerve monitoring is billed same-day without an established distinct-service modifier
Medical necessity denial when imaging documentation does not support open over closed treatment — payers want documented displacement, condylar head involvement, or failed closed reduction
Global period denial when post-op visits are billed without modifier 24 for an unrelated E/M
Upcoding audit flag when modifier 22 is appended without a narrative explaining the specific factors that increased work beyond the typical condylar ORIF

Frequently asked questions

Source · Generated from the editorial pipeline, verified against 7 cited references ↓

01When does a mandibular condylar fracture require 21465 instead of a closed treatment code?

Open treatment is indicated — and 21465 is the correct code — when the fracture is displaced enough to require direct visualization and hardware fixation through a skin incision. Closed treatment codes (21450, 21451, 21453) apply when reduction is achieved without surgical exposure of the fracture site.

02How do you bill a bilateral condylar fracture treated open in the same session?

Report 21465 twice — once with modifier LT and once with modifier RT — or use modifier 50 if your payer accepts bilateral billing on a single line. Confirm which format the payer requires before submission, as some MACs and commercial plans differ on this.

03Can 21465 and 21462 be billed together when there are multiple mandibular fractures?

Yes, when the condylar fracture and a separate mandibular body fracture are each treated surgically in the same session, you can report both codes. Append modifier 51 to the lower-value code and ensure the operative note documents each fracture site as a distinct surgical treatment. AAPC forum guidance supports modifier 59 on 21453 in similar multi-fracture scenarios.

04What modifiers apply if the patient returns to the OR during the 90-day global for a related complication?

Use modifier 78 for an unplanned return to the OR for a procedure directly related to the original condylar fracture repair — hardware failure, wound dehiscence, or malocclusion requiring surgical revision, for example. Modifier 79 applies only if the return OR procedure is entirely unrelated to the original surgery.

05Is facial nerve monitoring separately billable when performed during 21465?

It depends on current NCCI PTP edits. Intraoperative neurophysiologic monitoring codes have historically been subject to bundling disputes with surgical head and neck codes. Check the active NCCI PTP edit file for 21465 before billing monitoring separately, and confirm whether your payer's policy allows an unbundling modifier.

06What ICD-10 diagnosis codes are typically paired with 21465?

S02.61 series codes (fracture of condylar process of mandible) are the primary diagnosis matches — specify laterality (S02.611 left, S02.612 right, S02.619 unspecified) and whether the encounter is initial (A), subsequent (D), or sequela (S). Mismatched or unspecified laterality diagnosis codes are a common denial trigger.

Sources & references

Editorial content was developed using the following public sources. Last verified May 8, 2026.

Mira AI Scribe

Mira's AI scribe captures the surgical approach by name, condylar displacement characteristics, fixation construct details, and laterality directly from dictation. It flags operative notes that omit approach nomenclature or displacement description — the two gaps most likely to trigger medical necessity or audit reviews on open condylar fracture claims.

See how Mira captures CPT 21465 documentation