Surgical · Spine

Anterior approach osteotomy of a single lumbar vertebral segment, including discectomy, to correct spinal deformity or severe sagittal imbalance.

Verified May 8, 2026 · 8 sources ↓

Medicare: $1,480.33
Total RVUs: 44.32
Global, days: 90
Region: Spine

Drawn from CMSAAPCHealthcareinspiredllcEmednyCgsmedicare

Documentation requirements

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

Source · Editorial brief grounded in 8 cited references ↓

Operative note must identify the specific lumbar vertebral level(s) treated by name (e.g., L3, L4) and confirm the anterior surgical approach.
Document the indication — fixed sagittal imbalance, deformity correction, post-traumatic kyphosis, or other — with supporting imaging reports (X-ray, CT, or MRI).
Confirm that discectomy was performed at the osteotomy level; this is bundled into 22224 and must not be billed separately.
History and duration of conservative management failure must be documented when payer policy requires it for medical necessity review.
If a co-surgeon (modifier 62) is used for the anterior approach, each surgeon's operative note must independently describe their distinct intraoperative role.
Document smoking status and cessation counseling where required by payer for spinal surgery authorization.
Instrumentation details (device type, levels instrumented) must appear in the operative note to support separately reported instrumentation codes.
Preoperative and postoperative neurologic status should be recorded to establish baseline and support medical necessity.

Applicable modifiers

Modifiers commonly billed with this code.

Source · AMA CPT modifier descriptors · CMS NCCI Policy Manual

22 Increased complexity 51 Multiple procedures 52 Reduced services 57 Decision for surgery 58 Staged or related 59 Distinct service 62 Co-surgeons 78 Unplanned return — related 79 Unrelated during global 80 Assistant surgeon AS PA/NP/CNS assistant LT Left side RT Right side XS Separate structure

What this code covers

Source · Editorial summary grounded in 8 cited references ↓

22224 describes an anterior osteotomy of one lumbar vertebral segment performed through an anterior approach, with discectomy included. The procedure involves resecting bone at the vertebral level to allow angular correction of the lumbar spine — most commonly used to address fixed sagittal imbalance, severe kyphosis, or post-traumatic deformity that cannot be corrected through posterior techniques alone. The disc at the operative level is removed as part of the corrective resection; that work is bundled into 22224 and not separately reportable.

When additional lumbar segments require anterior osteotomy at the same operative session, report add-on code 22226 for each additional segment. If arthrodesis is performed at the same level(s), report the appropriate arthrodesis code(s) with modifier 51. Instrumentation codes (e.g., 22845–22847 for anterior instrumentation) are separately reportable. Co-surgeon arrangements — common in anterior lumbar access where a vascular or general surgeon performs the approach — are reported with modifier 62 by each primary surgeon when both are performing distinct portions of the procedure.

This is a 90-day global procedure. All routine post-op care through day 90 is bundled. Unrelated E/M services during the global period require modifier 24; same-day E/M services on the operative date require modifier 25. The 90-day global also applies to any related return-to-OR scenarios: use modifier 78 for an unplanned return for a related complication, and modifier 79 for an unrelated procedure during the global window.

RVU & reimbursement

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

Source · CMS Physician Fee Schedule, RVU26A · January 2026

Work RVU	22.51
Practice expense RVU	16.07
Malpractice RVU	5.74
Total RVU	44.32
Medicare national rate	$1,480.33
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	$1,480.33
HOPD (APC 5114) Hospital outpatient department	$7,413.38
ASC (PI G2) Ambulatory surgical center (freestanding)	$3,695.53

Common denial reasons

The recurring reasons claims for CPT 22224 get rejected.

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

Medical necessity denial when documentation lacks imaging correlation or fails to demonstrate failed conservative treatment prior to surgical intervention.
Unbundling denial for separately billing the discectomy at the osteotomy level — the disc removal is integral to 22224 and not separately payable.
Modifier 62 rejected when co-surgeon operative notes are identical or fail to describe each surgeon's distinct and separate intraoperative contribution.
Add-on code 22226 denied when the primary code 22224 is not present on the same claim or the additional segment is not clearly documented.
Global period violation denial when related post-op E/M or procedure claims are submitted without modifier 24 or 78 during the 90-day window.
Incorrect approach coding — payers deny 22224 when operative documentation describes a posterior or posterolateral approach rather than a true anterior approach (posterior osteotomy maps to 22214 for thoracic or 22214-series for lumbar).

Frequently asked questions

Source · Generated from the editorial pipeline, verified against 8 cited references ↓

01Can I bill 22224 and a separate discectomy code for the same level?

No. The discectomy at the osteotomy level is bundled into 22224. Billing a separate discectomy code (e.g., 63030) for the same level on the same date will trigger an NCCI bundling denial. If decompression is performed at a different level, that may be separately reportable with modifier 59 or XS — verify payer policy.

02What code covers additional lumbar segments treated with anterior osteotomy at the same session?

Report add-on code 22226 for each additional vertebral segment. It lists separately in addition to 22224 and does not take modifier 51. Both must appear on the same claim.

03How do I code when a vascular surgeon performs the anterior approach and a spine surgeon does the osteotomy?

Each surgeon appends modifier 62 (Co-Surgeon) to 22224 and bills under their own NPI. Each must have an independent operative note documenting their distinct portion of the procedure. If the second surgeon functions only as an assistant, modifier 80 or AS applies instead.

04Is 22224 reported with modifier 51 when arthrodesis is done at the same level?

Yes. When arthrodesis (e.g., 22558 for anterior lumbar interbody fusion) is performed at the same level, report the arthrodesis code as the primary procedure and append modifier 51 to 22224, or as directed by payer convention. Arthrodesis add-on codes (e.g., 22585) do not take modifier 51.

05What modifier applies if the surgeon returns to the OR during the 90-day global for a wound complication related to the 22224?

Use modifier 78 — unplanned return to the operating room for a procedure related to the original surgery during the global period. Modifier 79 is for unrelated procedures during the global window. Do not invert these.

06How does 22224 differ from posterior lumbar osteotomy codes?

22224 is specific to the anterior approach with discectomy at a single lumbar segment. Posterior or posterolateral lumbar osteotomy — such as a pedicle subtraction osteotomy performed from behind — maps to 22214 (thoracic) or 22210-series based on region and approach. The approach must be explicitly documented by name in the operative note.

07Does 22224 carry a global period, and what does that cover?

Yes, 22224 has a 90-day global period. That covers the surgery itself, the day-before visit if applicable, and all routine post-op care through day 90. Unrelated E/M visits in that window need modifier 24. A significant, separately identifiable E/M on the day of surgery needs modifier 25 if billed before the decision to operate, or modifier 57 if the visit constituted the decision for surgery.

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 anterior approach, the specific lumbar vertebral level(s), the osteotomy technique, disc removal at that level, any co-surgeon's role, and instrumentation applied — all from dictation. That prevents the two most common 22224 audit flags: operative notes that omit the approach descriptor and those that fail to document discectomy as integral to the osteotomy rather than a standalone procedure.

See how Mira captures CPT 22224 documentation