Repeat cervical laminotomy at a single interspace that was operated on before, decompressing the nerve root with partial facetectomy, foraminotomy, or removal of herniated disc.
- Medicare
- $1,287.94
- Work RVU
- 19.8
- Global, days
- 90
- Region
- Spine
Documentation requirements
What must appear in the operative or office note to support the claim.
Source · Editorial brief grounded in 3 cited references ↓
- Date and type of prior surgery at the same cervical interspace
- Level re-explored and side decompressed
- Scar dissection and nerve root identification in the op note
- Imaging showing recurrent herniation, stenosis, or other compression
- Radicular symptoms, neurologic findings, and failed conservative care
- Relationship to any prior global period
Applicable modifiers
Modifiers commonly billed with this code.
Source · AMA CPT modifier descriptors · CMS NCCI Policy Manual
What this code covers
Source · Editorial summary grounded in 3 cited references ↓
63040 is a re-exploration code. It covers going back into a cervical interspace that was operated on before and doing a laminotomy with nerve root decompression, which can include partial facetectomy, foraminotomy, or removal of recurrent disc. The first-time cervical laminotomy at a single interspace is 63020, and that is the code people confuse it with.
The word that drives this code is reexploration. If the op note does not say the level had prior surgery, the claim will not hold up. Scar tissue dissection and identification of the previously decompressed root are the details that justify the higher work. Each additional cervical interspace re-explored in the same session reports 63043.
Global period is 90 days. If the revision falls inside the global of the original surgery by the same surgeon, the claim needs modifier 78 (return to the OR for a related complication) or 58 (staged), and the payment rules differ for each. A recurrent herniation months later after the global ended needs no modifier for the global.
RVU & reimbursement
Component RVUs and Medicare national rate. Actual payment varies by GPCI locality.
Source · CMS Physician Fee Schedule, RVU26A · January 2026
Work RVU vs. total RVU
The work RVU (19.8) is the surgeon's own effort — the figure physician pay and productivity targets are built on. The total RVU (38.56) adds practice overhead and malpractice, and is what drives the Medicare payment below.
| Work RVU | 19.8 |
| Practice expense RVU | 12.61 |
| Malpractice RVU | 6.15 |
| Total RVU | 38.56 |
| Medicare national rate | $1,287.94 |
| 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 | $1,287.94 |
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 63040 get rejected.
Source · Editorial brief grounded in CMS NCCI edits, AAOS coding appeals, and cited references ↓
- No documentation of prior surgery at the same interspace, so 63020 applies
- Inside the original global period without modifier 78 or 58
- Additional levels billed as extra units instead of 63043
- Bundled with a same-level anterior or posterior fusion
- Assistant surgeon modifier on a payer that restricts assistants
- Missing imaging correlation for the recurrent compression
Frequently asked questions
Source · Generated from the editorial pipeline, verified against 3 cited references ↓
01What is the difference between CPT 63020 and 63040?
02How do you bill an additional level with 63040?
03Does a cervical revision inside the global need a modifier?
Sources & references
Editorial content was developed using the following public sources.
Mira Scribe
Mira Scribe's notes pull the prior surgery date and level into the pre-op history, which is the fact that separates a re-exploration from a first-time laminotomy.
See how Mira captures CPT 63040 documentation