Fusion · Spine

Add-on code for a posterior or posterolateral three-column spinal osteotomy (e.g., pedicle subtraction osteotomy) performed at each additional vertebral segment beyond the primary segment reported with 22206 or 22207.

Verified May 8, 2026 · 7 sources ↓

Medicare: $528.07
Total RVUs: 15.81
Global, days
Region: Spine

Drawn from CMSSrsGuidelinesAAPCFindacode

Documentation requirements

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

Source · Editorial brief grounded in 7 cited references ↓

Identify the specific vertebral level(s) treated with three-column osteotomy — segment-by-segment, not 'multilevel'
Explicitly name the osteotomy technique (e.g., pedicle subtraction osteotomy) and confirm posterior or posterolateral approach
Describe all three columns resected: lamina, bilateral pedicles, posterior vertebral wall — each must appear in the operative note
Document the primary procedure code (22206 or 22207) performed at the index segment in the same operative session
State the clinical indication driving multi-level correction — degree of deformity, rigidity, failure of single-level osteotomy to achieve alignment goals
Record intraoperative neuromonitoring use and any changes, as auditors scrutinize high-complexity spine cases for supporting documentation

Applicable modifiers

Modifiers commonly billed with this code.

Source · AMA CPT modifier descriptors · CMS NCCI Policy Manual

22 Increased complexity 51 Multiple procedures 59 Distinct service 62 Co-surgeons 80 Assistant surgeon AS PA/NP/CNS assistant

What this code covers

Source · Editorial summary grounded in 7 cited references ↓

22208 is an add-on code. It never stands alone — it requires a primary three-column osteotomy code: 22206 (thoracic) or 22207 (lumbar). Each unit of 22208 represents one additional vertebral segment treated with the same posterior or posterolateral three-column resection technique, which involves removal of the full lamina, bilateral pedicles, posterior vertebral wall, and portions of the lateral vertebral body to achieve angular correction.

The procedure is performed for severe, rigid spinal deformities — kyphosis, kyphoscoliosis, post-traumatic deformity — where a single-level osteotomy is insufficient to achieve the required correction. The three-column designation distinguishes pedicle subtraction osteotomy (PSO) from posterior column osteotomies (22216 series), which involve only a single column. That distinction drives a materially higher RVU value and must be explicitly supported in the operative note.

Because 22208 carries a ZZZ global period, it follows the global period of the primary procedure it accompanies — typically 22206 or 22207, both of which carry 090-day globals. Post-op complications billed during that global window need modifier 78 (unplanned return, related) or 79 (unrelated procedure) depending on clinical context. The code is classified as contractor-priced for ASC and HOPD settings, meaning facility payment is determined locally rather than by a national rate.

RVU & reimbursement

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

Source · CMS Physician Fee Schedule, RVU26A · January 2026

Work RVU	9.42
Practice expense RVU	3.19
Malpractice RVU	3.2
Total RVU	15.81
Medicare national rate	$528.07
Global period	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	$528.07

Common denial reasons

The recurring reasons claims for CPT 22208 get rejected.

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

Billed without a primary 22206 or 22207 on the same claim — 22208 cannot be reported as a standalone code
Operative note describes only a single-column (posterior column) osteotomy rather than a true three-column resection, mismatching the code billed
Number of units claimed for 22208 exceeds the number of additional segments documented in the operative report
Medical necessity not established — diagnosis codes do not reflect a severe or rigid spinal deformity requiring multi-level three-column resection
Segment-level specificity absent from the note — payer audits flag 'multilevel osteotomy' language without per-level documentation

Frequently asked questions

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

01Can 22208 be billed without 22206 or 22207 on the same claim?

No. 22208 is an add-on code and requires 22206 (thoracic primary) or 22207 (lumbar primary) on the same claim for the same operative session. Submitting 22208 alone will result in a denial.

02How many units of 22208 can be reported per case?

One unit per additional vertebral segment treated with a three-column osteotomy beyond the primary segment. Each unit must be supported by per-segment documentation in the operative note. Check the applicable MUE value in the CMS MUE table for the current limit.

03What is the difference between 22208 and 22216?

22216 is the add-on for a single-column posterior osteotomy (Smith-Petersen type). 22208 is the add-on for a three-column osteotomy (pedicle subtraction type). The operative note must clearly document which columns were resected — using the wrong code in either direction is a frequent audit finding.

04What global period applies to 22208?

22208 carries a ZZZ global, meaning it inherits the global period of the primary procedure it accompanies. When billed with 22207 (lumbar primary), the 90-day global of 22207 governs post-op billing. Use modifier 78 for unplanned related returns and modifier 79 for unrelated procedures within that window.

05Is modifier 22 appropriate for 22208?

Yes, when documented complexity substantially exceeds the typical case — for example, severe rigidity requiring extended resection time, significant anatomic distortion from prior surgery, or unusually high blood loss. The operative note must quantify or describe the additional work; modifier 22 without supporting narrative is routinely rejected.

06Is 22208 payable in an ASC or HOPD setting?

CMS classifies 22208 as contractor-priced (status indicator C) for both ASC and HOPD — there is no national facility rate. Payment is determined by the individual Medicare Administrative Contractor or payer. Verify local rates before scheduling these cases in outpatient facilities.

Sources & references

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

Mira AI Scribe

Mira's AI scribe captures each vertebral level treated, the named osteotomy technique (e.g., pedicle subtraction osteotomy), and confirmation of the three-column resection components — lamina, pedicles, posterior vertebral wall — directly from dictation. It also flags whether the primary segment was coded as 22206 or 22207 so the add-on unit count reconciles with operative documentation before the claim is submitted. This prevents the most common audit trigger: a unit count for 22208 that doesn't match the number of additional segments named in the operative note.

See how Mira captures CPT 22208 documentation