Surgical · Other

Surgical removal of the mandibular condyle at the temporomandibular joint, performed as a standalone procedure.

Verified May 8, 2026 · 7 sources ↓

Medicare: $795.94
Total RVUs: 23.83
Global, days: 90
Region: Other

Drawn from CMSAaomsAAPCPremeraMarylandphysicianscare

Documentation requirements

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

Source · Editorial brief grounded in 7 cited references ↓

Preoperative diagnosis with ICD-10 code supporting medical necessity (e.g., M26.60–M26.69, S02.600A–S02.69XS)
Operative note specifying surgical approach — preauricular incision, tissue dissection, method of condyle removal (drills vs. saws), and any secondary incision
Documentation of failed conservative treatment prior to surgical intervention
Laterality clearly stated (left, right, or bilateral) to support LT/RT or modifier 50 if bilateral
Confirmation that condylectomy was performed as a standalone procedure, not as a component of arthroplasty, to justify 21050 vs. 21240/21242/21243
Facility setting documented — procedure must be performed in outpatient hospital or ASC per Medicare ASC Covered Procedures List requirements

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 LT Left side RT Right side

What this code covers

Source · Editorial summary grounded in 7 cited references ↓

CPT 21050 covers condylectomy of the temporomandibular joint — excision of the rounded posterior projection of the mandible that articulates with the temporal bone. The surgeon typically approaches through a preauricular incision, dissects through tissue layers to expose the condyle, then removes it using drills or saws. A secondary incision at the mandibular angle may be required for access. This is coded as a separate procedure, meaning it should not be reported when condylectomy is performed as a component of a more complex arthroplasty.

Clinical indications include severe osteoarthritis, condylar resorption, trauma, ankylosis, and neoplastic disease of the condyle when conservative management has failed. The 90-day global period covers all routine postoperative care through day 90. Because this code appears on the ASC Covered Procedures List, Medicare will not reimburse it in an office setting — it must be performed in an outpatient hospital or ASC.

A CCI edit exists between 21050 and 21240 (TMJ arthroplasty). If the condylectomy is performed as part of a joint reconstruction, report 21240, 21242, or 21243 instead. Do not attempt to unbundle 21050 alongside an arthroplasty code for the same joint at the same encounter.

RVU & reimbursement

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

Source · CMS Physician Fee Schedule, RVU26A · January 2026

Work RVU	11.47
Practice expense RVU	10.7
Malpractice RVU	1.66
Total RVU	23.83
Medicare national rate	$795.94
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	$795.94
HOPD (APC 5165) Hospital outpatient department	$6,048.05
ASC (PI A2) Ambulatory surgical center (freestanding)	$3,025.62

Common denial reasons

The recurring reasons claims for CPT 21050 get rejected.

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

Billed in office setting (POS 11) — Medicare requires facility setting for this code; claim will deny as non-covered in POS 11
Unbundled alongside 21240, 21242, or 21243 — active CCI edit bundles 21050 into TMJ arthroplasty codes when performed on the same joint at the same encounter
Missing or insufficient documentation of failed conservative management prior to surgery
Laterality not specified when billing bilateral cases — payers require modifier 50 or separate line items with LT/RT
ICD-10 code mismatch — diagnosis code does not map to a covered TMJ condition or fails to establish medical necessity for surgical intervention

Frequently asked questions

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

01Can CPT 21050 be billed in the office?

No. Medicare places 21050 on the ASC Covered Procedures List, which restricts reimbursement to outpatient hospital or ASC settings. Billing in POS 11 will result in a denial.

02What's the difference between 21050 and 21240?

21050 is condylectomy as a standalone procedure. 21240 covers TMJ arthroplasty, which inherently includes condylar work as part of joint reconstruction. A CCI edit bundles 21050 into 21240 — if arthroplasty is the primary procedure, report 21240, 21242, or 21243, not 21050.

03How do you bill a bilateral condylectomy?

Report 21050 twice — once with modifier LT and once with modifier RT — or report it once with modifier 50. Confirm your payer's preferred billing convention before submitting, as some require separate line items.

04What ICD-10 codes support 21050?

M26.60–M26.69 covers TMJ disorders. S02.600A–S02.69XS covers mandibular fractures. The diagnosis must establish that surgical condylectomy is medically necessary, typically after conservative treatment failure.

05What global period applies to 21050?

90-day global. All routine postoperative visits, wound care, and stitch removal through day 90 are included. Services unrelated to the condylectomy during this window require modifier 24 on E/M visits or modifier 79 on unrelated procedures.

06When is modifier 22 appropriate for 21050?

Use modifier 22 when operative complexity significantly exceeds the typical condylectomy — for example, severe ankylosis with extensive ossification requiring prolonged dissection or unusual bleeding. The operative note must explicitly document what made the case atypically difficult; a generic reference to difficulty will not survive audit.

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 (preauricular incision with or without secondary mandibular angle incision), method of condyle removal, laterality, and explicit confirmation that condylectomy was performed independent of any arthroplasty. This prevents the two most common audit flags: operative notes that omit approach detail and claims that inadvertently trigger the CCI edit against 21240.

See how Mira captures CPT 21050 documentation