Open surgical incision into the elbow joint for exploration, drainage of fluid or infection, or removal of loose bodies such as bone fragments or cartilage debris.

Verified May 8, 2026 · 5 sources ↓

Medicare: $461.27
Total RVUs: 13.81
Global, days: 90
Region: Elbow

Drawn from CMSAAPC

Documentation requirements

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

Source · Editorial brief grounded in 5 cited references ↓

Operative note must name the specific surgical approach used (e.g., lateral, medial, posterior) — 'standard approach' flags audits
Document the indication driving the arthrotomy: septic joint, loose body, foreign body, or other — generic 'exploration' alone is insufficient
Describe all intraoperative findings explicitly, including the character of fluid drained (purulent, bloody, serous) and quantity if drained
Identify each loose body or foreign body removed, including estimated size and composition (osseous, cartilaginous, metallic, etc.)
If modifier 22 is appended, the operative note must quantify the added complexity or time with specific narrative — a blanket statement is not enough
Confirm laterality (left vs. right elbow) documented in both the operative note and the procedure order to support LT/RT modifiers

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 58 Staged or related 59 Distinct service 62 Co-surgeons 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 5 cited references ↓

CPT 24000 covers an open arthrotomy of the elbow — the surgeon incises the joint capsule to directly visualize the joint space, drain purulent or excess fluid, and/or extract loose bodies (osseous fragments, cartilage chips, or foreign material). This is a distinct open procedure, not an arthroscopic approach; if the case is converted from arthroscopy to open, bill only the open code.

The 90-day global period means all routine post-op visits, wound care, and stitch removal through day 90 are bundled. Arthrocentesis of the elbow performed on the same day is not separately reportable per NCCI policy. Debridement of the same joint is also bundled unless performed at a separate, distinct anatomic site.

Site of service matters significantly here — the HOPD and ASC payment rates differ substantially (see the Site of Service comparison table). Bilateral elbow arthrotomy in the same session is uncommon but would require modifier 50; laterality modifiers LT and RT apply when a single side is specified.

RVU & reimbursement

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

Source · CMS Physician Fee Schedule, RVU26A · January 2026

Work RVU	5.93
Practice expense RVU	6.66
Malpractice RVU	1.22
Total RVU	13.81
Medicare national rate	$461.27
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	$461.27
HOPD (APC 5113) Hospital outpatient department	$3,342.87
ASC (PI A2) Ambulatory surgical center (freestanding)	$1,644.87

Common denial reasons

The recurring reasons claims for CPT 24000 get rejected.

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

Medical necessity not established — payer requires documented failed conservative treatment or acute septic joint before approving open arthrotomy
Arthrocentesis (20605/20610) billed same-day for the same elbow joint triggers an NCCI bundling edit and will deny without valid modifier
Laterality mismatch between the claim modifier (LT/RT) and the operative note or procedure order causes claim rejection
Global period conflict — services billed during the 90-day post-op window without modifier 24 or 79 will be denied as bundled
Procedure billed as arthroscopic code when open approach was used, or vice versa, results in code mismatch denial

Frequently asked questions

Source · Generated from the editorial pipeline, verified against 5 cited references ↓

01Is 24000 an open or arthroscopic code?

Open only. If the surgeon performs an arthroscopic approach that is then converted to open, bill only the open code — do not stack an arthroscopy code alongside 24000 for the same joint on the same date.

02Can I bill arthrocentesis (20605 or 20610) on the same day as 24000?

No. NCCI policy bundles arthrocentesis into open or arthroscopic joint procedures when performed on the same joint. Billing both for the same elbow on the same date will trigger a PTP edit denial.

03What modifiers indicate bilateral elbow arthrotomy in one session?

Append modifier 50 for a true bilateral procedure performed in the same operative session. Alternatively, bill two line items with LT on one and RT on the other per payer preference — confirm which format your payer requires before submitting.

04What ICD-10 diagnoses typically support medical necessity for 24000?

Common supporting diagnoses include septic arthritis of the elbow (M00.821/M00.822), loose body in elbow joint (M24.021/M24.022), and foreign body in joint (M79.831/M79.832). Payers vary on whether conservative treatment failure must be documented first.

05How does the 90-day global period affect post-op billing?

All routine follow-up, wound checks, and stitch removal through day 90 are included in the surgical payment. To bill a separate E/M during the global period for an unrelated problem, append modifier 24. For an unrelated procedure during the global, use modifier 79.

06If a surgeon drains a septic elbow and also removes loose bodies, is 24000 still the right code?

Yes — 24000 covers exploration combined with drainage and/or removal of loose bodies as a single procedure. Do not unbundle these components into separate codes; the work is captured under one 24000 line.

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, the specific intraoperative findings (fluid character and volume, loose body count and composition), and explicit laterality from dictation — the three elements most often missing when 24000 claims are audited or denied for insufficient documentation.

See how Mira captures CPT 24000 documentation