Fusion · Spine

Posterior non-segmental instrumentation placed during spinal surgery, using rods, hooks, or wires that span multiple vertebral levels without anchoring at each intervening segment.

Verified May 8, 2026 · 5 sources ↓

Medicare: $668.35
Total RVUs: 20.01
Global, days
Region: Spine

Drawn from CMSMedtronicCarepatron

Documentation requirements

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

Source · Editorial brief grounded in 5 cited references ↓

Specify instrumentation type (rods, hooks, wires) and manufacturer by name for device tracking.
Identify the exact vertebral levels spanned by the construct and confirm non-segmental design — no attachment at each intervening segment.
Name the primary procedure code this add-on accompanies (e.g., specific arthrodesis or deformity correction CPT code).
Document the surgical approach and incision site used for instrumentation placement.
Record intraoperative imaging (fluoroscopy or navigation) used to confirm hardware position if utilized.
If modifier 22 is appended, document specific factors driving increased complexity: severe deformity, revision anatomy, excessive operative time with start/stop times.

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 76 Repeat, same physician 77 Repeat, another physician 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 5 cited references ↓

CPT 22840 is an add-on code for posterior non-segmental spinal instrumentation — hardware such as rods, hooks, or wires that bridges multiple vertebral levels but does not attach to every intervening segment. It is listed separately in addition to the primary spinal procedure code (arthrodesis, deformity correction, fracture repair, or tumor resection) and carries a ZZZ global period, meaning it inherits the global period of the primary procedure it accompanies.

Only one anterior or posterior instrumentation code from the 22840–22847 family may be reported through a single skin incision — a hard NCCI rule from the 2026 Medicare NCCI Policy Manual. Two surgeons performing distinct portions of the instrumentation may each bill with modifier 62. When complexity substantially exceeds the typical case (severe deformity, prior hardware removal, multi-revision anatomy), modifier 22 applies with supporting documentation of extra time and difficulty.

Bundling is the primary billing risk here. Payers routinely bundle 22840 into the primary arthrodesis or decompression code when documentation doesn't clearly support the non-segmental instrumentation as a distinct, separately performed service. The operative note must name the hardware, confirm the non-segmental construct, and identify the spinal levels spanned — vague language like 'instrumentation placed as planned' is an audit flag.

RVU & reimbursement

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

Source · CMS Physician Fee Schedule, RVU26A · January 2026

Work RVU	12.21
Practice expense RVU	4.04
Malpractice RVU	3.76
Total RVU	20.01
Medicare national rate	$668.35
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	$668.35

Common denial reasons

The recurring reasons claims for CPT 22840 get rejected.

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

Bundled into the primary arthrodesis or decompression code when operative note lacks distinct instrumentation detail.
Multiple instrumentation codes (22840–22847) billed through a single skin incision, violating NCCI policy.
Modifier 62 denied because each surgeon's distinct intraoperative role is not separately described in individual operative reports.
Modifier 22 denied for insufficient documentation — operative note lacks specific complexity factors, extra time, or unusual findings.
Non-segmental construct mischaracterized in documentation, causing payer to reassign to a segmental instrumentation code.

Frequently asked questions

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

01Is 22840 a standalone code or an add-on?

It is an add-on code — always reported in addition to the primary spinal procedure (arthrodesis, deformity correction, fracture repair). It cannot be billed alone.

02What's the difference between 22840 and 22842?

22840 is posterior non-segmental instrumentation (hardware that does not anchor at every vertebral level). 22842 is posterior segmental instrumentation for 3–6 vertebral segments, with fixation at each segment such as pedicle screws. The construct design and attachment pattern determine which code applies — not just the number of levels.

03Can two surgeons each bill 22840 with modifier 62?

Yes, when two surgeons each perform distinct portions of the instrumentation as co-primary surgeons. Each must document their specific intraoperative role in separate operative reports. Without role-specific documentation, modifier 62 will be denied.

04Can more than one instrumentation code from the 22840–22847 range be billed for the same session?

Only one anterior or posterior instrumentation code in the 22840–22847 range may be reported per single skin incision per the 2026 Medicare NCCI Policy Manual. Billing two instrumentation codes through the same incision will be denied.

05What global period applies to 22840 and how does that affect billing?

22840 carries a ZZZ global period, meaning it has no independent global period and instead inherits the global period of the primary procedure it accompanies. Post-op billing rules are governed by the primary procedure's global period.

06When is modifier 59 or XS appropriate with 22840?

Modifier 59 or XS is appropriate when instrumentation is performed at a different anatomic site or spinal region than another bundled procedure in the same session — for example, when separate procedures are performed at distinct spinal levels. It does not override the single-incision rule for multiple instrumentation codes.

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 instrumentation construct type (rods, hooks, or wires), confirms the non-segmental design with the vertebral levels spanned, records the manufacturer, and links the add-on to the named primary procedure code. It also flags when intraoperative imaging was used and logs surgeon-specific role language needed to support modifier 62. This prevents the most common denial path: bundling of 22840 into the primary arthrodesis because the operative note didn't distinguish the instrumentation as a separately documented service.

See how Mira captures CPT 22840 documentation