Fusion · Spine

Surgical exploration of a previously performed spinal fusion to assess the integrity of the bone graft, instrumentation, and fusion site.

Verified May 8, 2026 · 5 sources ↓

Medicare: $791.60
Total RVUs: 23.7
Global, days: 90
Region: Spine

Drawn from CMSSelecthealthFindacodeAAPC

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 identify the specific spinal level(s) explored by name and anatomic location
Findings at the fusion site must be documented — bone graft incorporation status, hardware integrity, evidence of pseudarthrosis or hardware failure
If billed same-day with another spinal procedure, the note must establish that the exploration occurred at a distinct anatomic level to support modifier 59
Anesthesia type and intraoperative imaging use (e.g., fluoroscopy) should be recorded
Clearly state that no new fusion, arthrodesis, or full hardware revision was performed — or bill the appropriate revision codes instead
Preoperative indication must document why stand-alone exploration was medically necessary (e.g., suspected pseudarthrosis, persistent pain, hardware concern)

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 LT Left side RT Right side

What this code covers

Source · Editorial summary grounded in 5 cited references ↓

CPT 22830 covers a stand-alone surgical exploration of a prior spinal fusion — the surgeon reopens the fusion site, inspects hardware (screws, rods, plates), evaluates bone graft incorporation, and documents findings. The procedure is performed under general anesthesia, typically with intraoperative fluoroscopy, and is distinct from incidental inspection done as part of another spine procedure at the same level.

The single most important billing rule for 22830: NCCI policy prohibits reporting it with another spinal procedure performed in the same anatomic area. If the exploration occurs at a different spinal level than the concurrent procedure, modifier 59 supports separate reporting — but you need the operative note to clearly identify distinct anatomic regions. If the exploration leads to hardware removal, bone graft revision, and a new fusion, the procedure is no longer exploratory; bill the definitive revision codes instead.

The 90-day global period means any post-op visits, wound checks, and routine follow-up related to the exploration are bundled through day 90. An E/M visit the day before surgery is included; the day-of pre-op evaluation is included. Unrelated problems seen during the global window require modifier 24.

RVU & reimbursement

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

Source · CMS Physician Fee Schedule, RVU26A · January 2026

Work RVU	10.94
Practice expense RVU	9.42
Malpractice RVU	3.34
Total RVU	23.7
Medicare national rate	$791.60
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	$791.60
HOPD (APC 5114) Hospital outpatient department	$7,413.38
ASC (PI J8) Ambulatory surgical center (freestanding)	$5,013.96

Common denial reasons

The recurring reasons claims for CPT 22830 get rejected.

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

NCCI bundling — 22830 denied when billed with another spinal procedure at the same anatomic level without modifier 59 and supporting documentation of distinct levels
Downcoded or denied when the operative note describes findings that evolved into hardware removal and new fusion, making the procedure a revision rather than exploration
Medical necessity denial when preoperative documentation doesn't establish a specific clinical reason for stand-alone exploration separate from a planned adjacent-level procedure
Global period conflict — 22830 billed during the post-op global of a prior spinal procedure without modifier 79 (unrelated) or 78 (related return to OR)
Missing modifier 59 when billed same-day with adjacent-level spinal surgery, resulting in automatic bundling by the payer

Frequently asked questions

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

01Can 22830 be billed with another spinal fusion code on the same day?

Only if the exploration occurs at a different anatomic level than the other procedure. NCCI policy explicitly bars 22830 from being reported with another spinal procedure in the same anatomic area. Use modifier 59 when the levels are distinct, and document both levels by name in the operative report.

02What happens if the exploration turns into hardware removal and a new fusion?

Stop billing 22830. Once bone graft and instrumentation are removed and a new fusion is performed, the procedure is a revision arthrodesis — bill the appropriate revision and instrumentation codes. The operative note dictates which codes apply, not the original surgical intent.

03What modifier do I use if 22830 is performed during the global period of a prior spinal surgery?

If it's a return to the OR for a complication related to the prior fusion, use modifier 78. If the exploration is genuinely unrelated to the prior surgery, use modifier 79. Do not invert these — modifier 78 is for related returns, 79 is for unrelated procedures during the global period.

04Is 22830 typically performed in a hospital or ASC setting?

Most commonly in an inpatient hospital (place of service 21) or on-campus outpatient hospital (place of service 22), given the complexity and need for intraoperative imaging. ASC performance is less common but possible; note that HOPD and ASC facility payments differ significantly — see the Site of Service comparison on this page.

05Does 22830 have a global period, and what does that include?

Yes — 22830 carries a 90-day global period. That includes the day-before pre-op visit, the surgery itself, and all routine post-op care through day 90. Unrelated E/M visits during that window need modifier 24; staged or unrelated procedures need modifier 79.

06Can a PA or NP bill as assistant-at-surgery on 22830?

Yes. Use modifier AS when a physician assistant, nurse practitioner, or clinical nurse specialist serves as the surgical assistant. Confirm the payer accepts AS for spine procedures — some commercial payers require modifier 80 for a physician assistant-at-surgery instead.

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 explored spinal level by name, hardware inspection findings (screw loosening, rod fracture, graft incorporation status), intraoperative imaging used, and the surgeon's conclusion — specifically whether the procedure remained exploratory or converted to revision. This prevents the most common audit flag: an operative note that says 'fusion site was inspected' without documenting distinct level, findings, and decision-making that justify a stand-alone 22830 versus bundling into an adjacent procedure.

See how Mira captures CPT 22830 documentation