Surgical · Spine

Partial or complete resection of a lumbar vertebral body via a lateral extracavitary approach, performed to decompress the spinal cord and/or nerve roots — typically for tumor, infection, or retropulsed bone fragments.

Verified May 8, 2026 · 5 sources ↓

Medicare: $1,822.02
Total RVUs: 54.55
Global, days: 90
Region: Spine

Drawn from CMSMedtronicHealthhelp

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 name the approach explicitly — 'lateral extracavitary' — not just 'posterior' or 'standard approach'
Specify the lumbar level(s) operated on (e.g., L2, L3) and confirm single-segment corpectomy for base code billing
Document the pathology driving decompression: tumor, retropulsed fragment, infection, or other etiology with pre-op imaging correlation
Describe the extent of vertebral body resection (partial vs. complete) and the decompression achieved (cord, cauda equina, specific nerve roots)
If instrumentation or fusion was performed at the same session, document each separately in the operative note to support add-on and instrumentation codes
Pre-operative neurological status and intraoperative neuromonitoring findings should be recorded when applicable to support medical necessity

Applicable modifiers

Modifiers commonly billed with this code.

Source · AMA CPT modifier descriptors · CMS NCCI Policy Manual

22 Increased complexity 51 Multiple procedures 52 Reduced services 57 Decision for surgery 58 Staged or related 62 Co-surgeons 74 Discontinued post-anesthesia 78 Unplanned return — related 79 Unrelated during global 80 Assistant surgeon AS PA/NP/CNS assistant

What this code covers

Source · Editorial summary grounded in 5 cited references ↓

CPT 63090 covers vertebral corpectomy at the lumbar level using a lateral extracavitary approach — a posterolateral technique that avoids entering the thoracic or abdominal cavities while still reaching the anterior and middle spinal columns. The approach allows direct decompression of the spinal cord and nerve roots, most commonly for neoplastic disease, osteomyelitis/discitis with epidural extension, or traumatic retropulsion of bony fragments. The code covers a single lumbar segment; add-on code 63091 is reported for each additional segment.

The lateral extracavitary approach is distinct from the transperitoneal and retroperitoneal approaches described under 63087 and the combined thoracolumbar approach under 63056 — approach documentation is mandatory for code selection. Because corpectomy creates structural instability, spinal instrumentation and fusion are commonly performed at the same operative session and reported separately. Reconstruction with a vertebral body replacement device or structural graft is also separately reportable with appropriate implant and instrumentation codes.

This is a 90-day global procedure. All routine post-op evaluation, wound management, and related follow-up through day 90 are bundled. Unrelated E/M services during the global period require modifier 24. If a significant, separately identifiable E/M is performed on the day of surgery for a reason unrelated to the decision to operate, append modifier 25 to that E/M.

RVU & reimbursement

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

Source · CMS Physician Fee Schedule, RVU26A · January 2026

Work RVU	30.16
Practice expense RVU	15.66
Malpractice RVU	8.73
Total RVU	54.55
Medicare national rate	$1,822.02
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	$1,822.02

Common denial reasons

The recurring reasons claims for CPT 63090 get rejected.

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

Approach not documented — payer cannot distinguish 63090 from 63087 or 63056 without explicit lateral extracavitary language in the op note
Medical necessity denial when imaging studies, pathology reports, or prior conservative treatment history are absent from the claim submission
Unbundling denial if routine decompression components are billed separately rather than included in the corpectomy code
Segment count mismatch — billing the base code when add-on 63091 should also be reported for multi-level resections
Global period violation — post-op E/M claims submitted without modifier 24 during the 90-day global window

Frequently asked questions

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

01What distinguishes 63090 from 63087?

The approach. Code 63087 uses a transperitoneal or retroperitoneal route to reach the lumbar or lower thoracic vertebral body. Code 63090 uses a lateral extracavitary approach — a posterolateral dissection that avoids entering a body cavity. The pathology may be identical; the operative approach determines the code.

02Is spinal fusion always reported separately when done at the same session?

Yes. Fusion, instrumentation, and bone graft or vertebral body replacement are not bundled into 63090 and are separately reportable. Append modifier 51 to secondary procedures where required by payer policy, but verify whether the fusion code carries modifier 51 restrictions.

03Can 63090 and 63091 be billed together?

Yes. Code 63091 is the add-on code for each additional lumbar segment resected via the same lateral extracavitary approach. It is not subject to modifier 51 and should be listed on the claim each time an additional segment is resected.

04How should the surgeon's assistant be billed?

Use modifier 80 for a physician assistant surgeon or modifier AS when a non-physician practitioner (PA, NP) assists. The complexity of a corpectomy generally supports medical necessity for an assistant, but document the assistant's role explicitly in the operative note.

05What modifier applies if the patient requires an unplanned return to the OR for a wound complication during the 90-day global?

If the return procedure is related to the original corpectomy, use modifier 78. If it is for a truly unrelated condition, use modifier 79. Modifier 78 does not open a new global period; modifier 79 does.

06Does CMS assign a facility payment rate for 63090 in an ASC or HOPD setting?

The data shows no HOPD or ASC payment rate assigned — this procedure is performed in the inpatient hospital setting. Verify site-of-service requirements with the payer before scheduling in any outpatient facility.

07When is modifier 22 appropriate for 63090?

Use modifier 22 when the work substantially exceeds typical — for example, severe scarring from prior surgery, markedly abnormal anatomy, or unusual tumor vascularity requiring significantly more operative time and effort. The operative note must quantify the additional work, not just note that the case was 'difficult'.

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 approach descriptor ('lateral extracavitary'), the lumbar level(s), the extent of vertebral body resection, and the specific neural elements decompressed directly from surgeon dictation. This prevents the most common audit flag on 63090 — an operative note that describes a corpectomy without naming the approach, leaving the coder unable to distinguish between 63087 and 63090 and forcing a query that delays billing.

See how Mira captures CPT 63090 documentation