Fusion · Spine

Anterior spinal instrumentation spanning 8 or more vertebral segments, reported as an add-on to the primary spinal procedure.

Verified May 8, 2026 · 7 sources ↓

Medicare: $687.39
Total RVUs: 20.58
Global, days
Region: Spine

Drawn from AAPCCMSSrsFiles

Documentation requirements

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

Source · Editorial brief grounded in 7 cited references ↓

Explicit segment count showing 8 or more vertebral segments spanned by the anterior instrumentation
Identification of the anterior approach used and confirmation it is a distinct incision if any posterior instrumentation is also being billed
Description of hardware placed (e.g., anterior rod-and-screw construct, anterior plate) sufficient to distinguish from integral cage-anchoring instrumentation
Linkage to the primary procedure code (arthrodesis, fusion) for which 22847 is an add-on
Surgeon attestation that the anterior instrumentation is not solely integral to anchoring an interbody biomechanical device when 22853/22854 is also billed

Applicable modifiers

Modifiers commonly billed with this code.

Source · AMA CPT modifier descriptors · CMS NCCI Policy Manual

59 Distinct service 51 Multiple procedures

What this code covers

Source · Editorial summary grounded in 7 cited references ↓

22847 covers placement of anterior fixation hardware — rods, plates, screws — across 8 or more vertebral segments via an anterior approach, typically to correct a spinal deformity. It is always an add-on code: never reported alone, always listed in addition to the primary arthrodesis, fusion, or other definitive spinal procedure.

Segment count determines which anterior instrumentation code applies. The family runs 22845 (2–3 segments), 22846 (4–7 segments), and 22847 (8 or more). Count segments spanned by the instrumentation, not levels fused, and document that count explicitly in the operative note. NCCI prohibits reporting more than one anterior or posterior instrumentation code (22840–22847) through a single skin incision — if the approach is one incision, one code.

A critical NCCI trap: if the anterior instrumentation is integral to anchoring an interbody biomechanical device (22853/22854), it cannot be separately billed as 22847. Only truly additional anterior hardware — a plate or rod independent of the cage anchor — can be reported with 22847, and then it requires modifier 59 or XU to bypass the edit.

RVU & reimbursement

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

Source · CMS Physician Fee Schedule, RVU26A · January 2026

Work RVU	13.44
Practice expense RVU	4.28
Malpractice RVU	2.86
Total RVU	20.58
Medicare national rate	$687.39
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	$687.39

Common denial reasons

The recurring reasons claims for CPT 22847 get rejected.

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

Segment count documented in the operative note does not clearly reach 8 or more, triggering downcoding to 22846 or 22845
Billed alongside 22853/22854 without modifier 59 or XU when instrumentation is integral to cage anchoring — NCCI edit fires and 22847 is denied
Reported as a standalone code rather than as an add-on to a primary spinal procedure, which violates the code's add-on status
Two anterior or posterior instrumentation codes (e.g., 22846 + 22847) billed through a single skin incision in violation of NCCI policy

Frequently asked questions

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

01How do I count segments for 22847 versus 22846?

Count the vertebral segments actually spanned by the anterior instrumentation construct, not the number of interspaces fused. If the construct runs from T4 to L2, that spans 9 segments — 22847 applies. Document the specific vertebral levels in the operative note.

02Can I bill 22847 and a posterior instrumentation code on the same operative report?

Yes, if they are performed through separate incisions. NCCI allows both anterior and posterior instrumentation codes when each is performed through its own distinct skin incision. If both are done through a single incision, only one instrumentation code is billable.

03Can 22847 be billed with 22853 or 22854?

Only if the anterior hardware is truly additional and not solely serving to anchor the interbody device. Integral anchoring instrumentation is non-separately reportable. If you do bill both, append modifier 59 or XU to 22847 and ensure the operative note specifically describes the additional plate or rod construct.

04What is the global period for 22847?

22847 carries a ZZZ global period, meaning it follows the global period of the primary procedure to which it is added. Post-op management is governed by the primary code's global package, not a separate global window for 22847 itself.

05Is 22847 ever reported for growing rod surgery lengthening procedures?

No. Growing rod lengthening does not have a precise CPT match — 22849 (reinsertion of spinal fixation device) or 22899 (unlisted spine procedure) are the options discussed in the literature. 22847 is for initial anterior instrumentation placement spanning 8 or more segments, not subsequent lengthenings.

06Does modifier 51 apply when 22847 is billed with the primary fusion code?

22847 is an add-on code and is exempt from modifier 51 reduction by definition. Do not append modifier 51 to 22847. Modifier 51 applies to non-add-on multiple procedures.

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 exact number of vertebral segments spanned by the anterior instrumentation, the hardware type placed, and the anterior approach from dictation — preventing the most common denial trigger: a segment count that doesn't reach the 8-segment threshold in the operative note. It also flags when 22853 or 22854 is present so you can verify whether modifier 59 is needed before the claim goes out.

See how Mira captures CPT 22847 documentation