Fusion · Spine

Thoracic laminectomy covering one or two vertebral segments, performed to explore and/or decompress the spinal cord or cauda equina — without facetectomy, foraminotomy, or discectomy.

Verified May 8, 2026 · 7 sources ↓

Medicare: $1,198.09
Total RVUs: 35.87
Global, days: 90
Region: Spine

Drawn from CMSMedtronicAAPCAAOS

Documentation requirements

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

Source · Editorial brief grounded in 7 cited references ↓

Specify the exact thoracic vertebral level(s) operated on — T1 through T12 — and confirm the segment count does not exceed two for this code.
Operative note must state that no facetectomy, foraminotomy, or discectomy was performed; performing any of those without documentation updates may trigger a code mismatch.
Document the clinical indication with supporting imaging — MRI or CT showing cord compression, stenosis, or relevant pathology at the thoracic level(s) treated.
Record the surgical approach and confirm posterior extradural access; notes that only state 'standard posterior approach' without specifics are audit flags.
If modifier 22 is appended, the operative note must describe specific factors — adhesions, prior surgery, anatomical anomaly, or extended operative time — that made the work substantially greater than typical.
Document assistant surgeon participation if modifier 80 or AS is used, including the assistant's identity and role in the procedure.

Applicable modifiers

Modifiers commonly billed with this code.

Source · AMA CPT modifier descriptors · CMS NCCI Policy Manual

22 Increased complexity 51 Multiple procedures 57 Decision for surgery 58 Staged or related 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 7 cited references ↓

CPT 63003 describes a posterior thoracic laminectomy in which the lamina of one or two vertebral segments is removed to relieve pressure on the spinal cord or cauda equina. The procedure is extradural and does not include facetectomy, foraminotomy, or disc excision — if any of those are performed, additional or alternative codes apply. Common indications include thoracic spinal stenosis and cord compression from degenerative disease or other structural pathology.

Effective January 1, 2026, CMS removed numerous spine procedures from the Inpatient Only list and added them to the ASC Covered Procedures List. As a result, 63003 is now payable in both the HOPD and ASC settings — a material shift for surgical site-of-service planning. The 90-day global period means all routine postoperative care through day 90 is bundled into the surgical payment; separate E/M billing in that window requires modifier 24 for unrelated visits or modifier 57 for a decision-for-surgery visit made the day of or day before the procedure.

Billing complexity rises when additional decompression procedures are performed at the same session or across multiple thoracic levels. If the segment count exceeds two, a different code applies. When 63003 is reported alongside other spine codes, NCCI edits and multiple-procedure reduction rules under modifier 51 govern payment — list 63003 first only if it carries the highest RVU in the session, otherwise sequence by descending RVU value.

RVU & reimbursement

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

Source · CMS Physician Fee Schedule, RVU26A · January 2026

Work RVU	17.3
Practice expense RVU	12.11
Malpractice RVU	6.46
Total RVU	35.87
Medicare national rate	$1,198.09
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	$1,198.09
HOPD (APC 5114) Hospital outpatient department	$7,413.38
ASC (PI G2) Ambulatory surgical center (freestanding)	$3,695.53

Common denial reasons

The recurring reasons claims for CPT 63003 get rejected.

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

Segment count mismatch: operative report describes more than two thoracic levels but only 63003 is billed, or the wrong level-count code is selected.
Unbundling conflict when facetectomy, foraminotomy, or discectomy is performed and separately coded without recognizing that those services require a different primary code.
Missing or generic operative note language — 'spinal decompression performed' without naming the specific levels, approach, and structures addressed — fails medical necessity review.
E/M billed during the 90-day global without modifier 24 or 25, resulting in automatic denial as a bundled service.
Site-of-service mismatch between the place of service code on the claim and the actual setting where the procedure was performed, particularly relevant now that ASC billing is newly available for this code in 2026.

Frequently asked questions

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

01What is the segment limit for CPT 63003, and what do I use if I exceed it?

63003 covers one or two thoracic vertebral segments. If you decompress more than two thoracic levels in a single session, review the thoracic laminectomy code family for the appropriate multi-level code and confirm with NCCI guidance for add-on reporting.

02Can I bill 63003 in an ASC setting in 2026?

Yes. CMS added thoracic laminectomy procedures to the ASC Covered Procedures List effective January 1, 2026, as part of a broad expansion removing over 100 spine procedures from the Inpatient Only list. The ASC payment rate differs from HOPD — see the Site of Service comparison on this page.

03If I also perform a discectomy at the same thoracic level, do I add a code or use a different primary code?

63003 explicitly excludes discectomy. If disc excision is performed, you need a different code that captures laminectomy with discectomy. Tacking on a separate discectomy code to 63003 will trigger an NCCI bundling edit.

04How does the 90-day global period affect follow-up billing?

All routine postoperative visits through day 90 are bundled. If you see the patient for an unrelated problem during that window, append modifier 24 to the E/M. If the visit on the day of or day before surgery is the decision-for-surgery encounter, use modifier 57.

05When is modifier 22 appropriate for 63003?

Use modifier 22 when operative complexity is substantially greater than typical — documented examples include severe epidural fibrosis from prior surgery, significant anatomical distortion, or markedly extended operative time with a clear explanation in the operative report. Without that documentation, payers will deny the upcharge.

06Can two surgeons each bill 63003 using modifier 62 for a co-surgery?

Modifier 62 applies when two surgeons of different specialties each perform distinct portions of the procedure and each dictates their own operative report. Both surgeons append modifier 62, and each receives approximately 62.5% of the fee schedule amount. Confirm co-surgery eligibility for 63003 with your MAC before billing.

07If the patient returns to the OR within the global period for a related complication, what modifier applies?

Use modifier 78 — unplanned return to the OR for a related procedure during the postoperative period. Modifier 79 is for an unrelated procedure. Inverting these two is a common error that triggers audits and potential overpayment recoupment.

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 treated thoracic vertebral levels by name, confirms the absence of facetectomy, foraminotomy, and discectomy from dictation, and flags the segment count against the 63003 ceiling of two. This prevents the most common 63003 denial: a mismatch between the documented procedure scope and the billed code driven by incomplete operative note language.

See how Mira captures CPT 63003 documentation