Surgical · Spine

Biopsy or excision of a lesion in the lumbar spine performed via laminectomy approach, accessing an extradural target.

Verified May 8, 2026 · 6 sources ↓

Medicare: $1,502.37
Total RVUs: 44.98
Global, days: 90
Region: Spine

Drawn from CMSAAPCMdclarityAAOS

Documentation requirements

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

Source · Editorial brief grounded in 6 cited references ↓

Operative note must confirm laminectomy approach by name and extent of bone removal
Explicit documentation that the lesion is extradural — not intradural or intramedullary
Lumbar level(s) involved must be identified (e.g., L3, L4-L5)
Pathology specimen submission documented with laterality and tissue type
Pre-op imaging (MRI or CT) correlated to intraoperative findings in the note
Medical necessity narrative supporting excision vs. biopsy-only approach if full excision performed

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

What this code covers

Source · Editorial summary grounded in 6 cited references ↓

63277 covers biopsy or excision of an extradural lesion at the lumbar level using a laminectomy approach. The extradural designation is critical — this code applies when the lesion is outside the dural sac, such as an epidural tumor, metastatic deposit, or other extradural mass. Intradural lesions route to different codes entirely, and selecting the wrong descriptor is a common audit flag.

This is a 90-day global procedure. All routine post-op visits, wound checks, and related follow-up care fall inside the global and cannot be billed separately. Any unrelated procedure performed by the same surgeon during the 90-day window requires modifier 79; an unplanned return to the OR for a related complication requires modifier 78. Modifier 22 is defensible when documented factors — pathological anatomy, bleeding, scarring from prior surgery — meaningfully extended operative time.

Operative documentation must specify the laminectomy approach, confirm the extradural location of the lesion, and include intraoperative findings and pathology submission. Ambiguous operative notes that describe a 'spinal mass excision' without anatomic precision are the fastest route to a payer's desk for downcoding or denial.

RVU & reimbursement

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

Source · CMS Physician Fee Schedule, RVU26A · January 2026

Work RVU	21.83
Practice expense RVU	15.06
Malpractice RVU	8.09
Total RVU	44.98
Medicare national rate	$1,502.37
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	$1,502.37

Common denial reasons

The recurring reasons claims for CPT 63277 get rejected.

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

Code mismatch: lesion documented as intradural but billed as extradural (63277)
Operative note lacks explicit confirmation of laminectomy approach — described as 'standard spine exposure'
Missing or late pathology report that payer requires to confirm lesion classification
Unbundled imaging guidance billed separately when not supported as a distinct service
Modifier absent on same-day or global-period related procedures triggering NCCI bundling denial

Frequently asked questions

Source · Generated from the editorial pipeline, verified against 6 cited references ↓

01How does 63277 differ from 63275 and 63276?

63275 covers the cervical level, 63276 the thoracic level, and 63277 the lumbar level — all three describe extradural lesion excision via laminectomy. Level selection must match the operative and imaging documentation exactly.

02Can 63277 be billed with a spinal fusion code on the same day?

It can, but expect NCCI scrutiny. If fusion is performed at the same level as the excision in the same session, document distinct clinical justification for each procedure. Modifier 59 may be required to bypass a bundling edit, and supporting documentation must establish that the fusion is not integral to the excision.

03What modifier applies if two surgeons perform 63277 together?

Modifier 62 applies when two surgeons of different specialties each perform a distinct portion of the procedure and each bills separately. Both surgeons' operative notes must reflect their individual contributions.

04Is modifier 50 ever appropriate for 63277?

Rarely. The lumbar spine is a midline structure, but if bilateral laminectomy at the same level is documented and clinically justified, modifier 50 could apply. Payer policies vary — confirm with your MAC before billing bilateral on a lumbar spine excision.

05What happens if the same surgeon needs to return to the OR during the 90-day global for a related complication?

Bill the return procedure with modifier 78. This flags an unplanned return to the OR for a related procedure during the post-op period and allows separate payment at a reduced rate reflecting the excluded pre- and post-op work.

06Does 63277 include intraoperative neurophysiological monitoring?

No. IONM is separately reportable by the monitoring provider. The performing surgeon does not bill IONM codes — that work is captured by the independent IONM service, and the two do not bundle.

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 laminectomy approach, lumbar level(s), extradural lesion location, intraoperative findings, and pathology submission details directly from dictation. This prevents the most common audit flag — operative notes that document a spinal mass removal without confirming the extradural designation or the specific laminectomy approach, both of which are required to defend 63277 over a lower-complexity code.

See how Mira captures CPT 63277 documentation