Fusion · Spine

Anterior spinal arthrodesis for deformity correction spanning 2 to 3 vertebral segments, performed with or without cast application.

Verified May 8, 2026 · 7 sources ↓

Medicare: $1,754.55
Total RVUs: 52.53
Global, days: 90
Region: Spine

Drawn from CMSNoridianUhcproviderAAPC

Documentation requirements

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

Source · Editorial brief grounded in 7 cited references ↓

Operative note must identify the specific vertebral levels fused and confirm the total segment count (2–3) to justify 22808 over 22810 or 22812.
Primary diagnosis must document a spinal deformity (e.g., scoliosis, kyphosis) with ICD-10 specificity — degenerative disc disease alone does not support this code family.
If modifier 62 is used for co-surgery, each surgeon must provide a separate operative note detailing their distinct and integral role in the procedure.
Pre-operative imaging (X-ray, MRI, or CT) in the record demonstrating the deformity and the involved segments requiring fusion.
Document whether cast application was performed; while 'with or without cast' is included in the descriptor, the operative note should address it either way.
If instrumentation is placed, document the type and levels to support separately reported add-on instrumentation codes.

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 78 Unplanned return — related 79 Unrelated during global 80 Assistant surgeon AS PA/NP/CNS assistant XS Separate structure

What this code covers

Source · Editorial summary grounded in 7 cited references ↓

CPT 22808 covers anterior spinal fusion performed specifically to correct a spinal deformity — scoliosis, kyphosis, or similar structural abnormality — across 2 to 3 vertebral segments. The anterior approach means the surgeon accesses the spine from the front, typically requiring a general or vascular surgery co-surgeon to open and close, which is why modifier 62 appears frequently on these claims. Segment count drives code selection in this family: 22808 is strictly 2–3 segments. Four to seven segments moves to 22810; eight or more moves to 22812. Getting the count wrong is a clean audit trigger.

Instrumentation (rods, hooks, pedicle fixation) is reported separately with the appropriate add-on instrumentation code — it is not bundled into 22808. The 90-day global period covers all routine post-op management through day 90. Unrelated procedures in that window require modifier 79; a return to the OR for a related complication requires modifier 78. Because neurosurgery and orthopedic spine surgeons often share these cases, co-surgeon billing with modifier 62 must be supported by separate operative notes from each surgeon documenting their distinct, integral portion of the procedure.

Note: CMS removed 22808 from the Cervical Fusion billing and coding article (A59645) effective July 7, 2024. If you are billing this code for a cervical deformity case, verify current MAC-level LCD and coding article applicability before submitting.

RVU & reimbursement

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

Source · CMS Physician Fee Schedule, RVU26A · January 2026

Work RVU	26.82
Practice expense RVU	17.22
Malpractice RVU	8.49
Total RVU	52.53
Medicare national rate	$1,754.55
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	$1,754.55
HOPD (APC 5116) Hospital outpatient department	$17,913.59
ASC (PI J8) Ambulatory surgical center (freestanding)	$13,717.93

Common denial reasons

The recurring reasons claims for CPT 22808 get rejected.

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

Wrong code in the segment-count family — billing 22808 when the operative note documents 4 or more segments fused, which maps to 22810 or 22812.
Diagnosis does not establish spinal deformity — payers deny when the ICD-10 reflects degenerative disease without a documented structural deformity indication.
Co-surgeon claims denied when only one operative note is on file or when the second surgeon's note does not independently describe their integral portion of the procedure.
MAC coverage gap: 22808 was removed from the CMS Cervical Fusion billing article (A59645) effective 7/7/2024 — claims for cervical cases may deny without supporting LCD documentation.
Instrumentation codes denied as unbundled when payer policy or NCCI edits apply — verify current NCCI PTP edits and whether modifier 59 or XS is needed to override.

Frequently asked questions

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

01How do I choose between 22808, 22810, and 22812?

Segment count decides it. 22808 is 2–3 segments; 22810 is 4–7 segments; 22812 is 8 or more. Count the segments actually fused as documented in the operative note, not the number of interspaces or levels of instrumentation.

02Can I bill instrumentation separately with 22808?

Yes. Instrumentation codes (e.g., 22840–22848 series) are add-on codes reported in addition to the primary arthrodesis code. They are not bundled into 22808 — but verify current NCCI PTP edits for the specific instrumentation code you're appending.

03When is modifier 62 appropriate for 22808?

Use modifier 62 when two surgeons of different specialties — typically a spine surgeon and a general or vascular surgeon — each perform a distinct, integral portion of the anterior approach procedure. Both surgeons bill 22808-62, and each must have a separate operative note on file.

04Does the 90-day global period apply to 22808?

Yes. The 90-day global covers the surgery, the day-before pre-op visit, and all routine post-operative care through day 90. Modifier 24 is required for unrelated E/M visits during the global; modifier 79 is required for unrelated surgical procedures in that window.

05Was 22808 removed from Medicare cervical fusion coverage?

CMS removed 22808 from the Cervical Fusion billing and coding article A59645 effective July 7, 2024. If you are billing this code for a cervical-region deformity case under Medicare, check your MAC's current LCD and coding articles before submitting to confirm coverage applicability.

06What ICD-10 diagnoses support medical necessity for 22808?

The diagnosis must reflect a structural spinal deformity — scoliosis or kyphosis with appropriate specificity (e.g., M41.xx, M40.xx). Degenerative disc disease or spondylosis alone will not satisfy payer criteria for this deformity-specific code family.

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 (anterior), the exact vertebral levels fused, the confirmed segment count, deformity type and severity from the dictation, and whether instrumentation or cast application was performed. This prevents the most common 22808 denial: a segment count in the note that maps to 22810 or 22812 instead, or a missing deformity diagnosis that reduces the claim to a non-covered degenerative fusion code.

See how Mira captures CPT 22808 documentation