CPT code 22551: ACDF, one cervical interspace with decompression2026 Medicare rate & RVUs in Montana

Reports anterior cervical discectomy and fusion at one interspace below C2 when the surgeon also decompresses the spinal cord or nerve roots.

CMS RVU26DEffective Oct 1, 2026One payment locality51.6K Medicare services in 2024

In Montana, Medicare pays $1,604.36 for 22551 in a facility. There’s no office rate.

Not available in this settingOffice (non-facility)
$1,604.36Hospital or facility

Check a contract rate as a % of Medicare · 22551 nationwide

Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.

We’ll open 22551 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Montana
  2. What 22551 covers
  3. Compared with other areas
  4. Rate map
  5. How it’s calculated
  6. Payment rules
  7. Related codes
  8. Rate history
  9. Where it applies
  10. Billing questions
  11. Sources

What 22551 covers

This code describes an anterior cervical discectomy and fusion at a single interspace below C2 that includes removal of disc and bone material to decompress the spinal cord or nerve roots. A spine surgeon, commonly an orthopedic surgeon or neurosurgeon, performs the operation in an operating room. The surgeon prepares the disc space and fuses the adjacent vertebrae, often using graft material and an interbody device. Typical indications include cervical disc disease or osteophytes causing radiculopathy or myelopathy when decompression and fusion are performed at that level.

Report 22551 for one treated interspace when the operative documentation supports both decompression and fusion; the documented level and work distinguish it from fusion without decompression. Additional cervical interspaces may be reported with add-on code 22552. Disc removal, osteophyte removal, and decompression at the coded level are included. CMS assigns a 90-day global period, including the day-before preoperative visit and 90 days of related postoperative care. In the same session, the highest-valued procedure is paid in full and other procedures receive the standard multiple-procedure reduction. Modifier 50 is inappropriate for this anatomy. Assistant-at-surgery payment may be made, co-surgeons are permitted, and team surgery is not permitted.

This summary was written with AI assistance from CMS physician fee schedule data and checked against the CMS billing rules shown here. Rates on this page come directly from CMS files.

How Montana compares for 22551

Across 109 of 109 payment localities, the facility rate for 22551 runs from $1,392.81 in Wisconsin to $2,046.86 in Miami, FL. Montana pays $1,604.36. The RVUs are the same everywhere; the geographic indexes change the dollars.

22551 in Montana vs other payment areas
  1. Montana · this page$1,604.36
  2. Los Angeles, CA · California$1,640.14+$35.78
  3. Washington, DC area · District of Columbia$1,771.72+$167.36
  4. Miami, FL · Florida$2,046.86+$442.50
  5. Chicago, IL · Illinois$1,969.60+$365.24
  6. Manhattan, NY · New York$1,901.80+$297.44
  7. Alaska · Alaska$1,921.99+$317.63

Other areas in Montana first, then benchmark localities. Bars start at $0.

Every other payment area

22551 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama—$1,421.04
ArkansasArkansas—$1,398.76
ArizonaArizona—$1,549.30
Bakersfield, CACalifornia—$1,562.25
Chico, CACalifornia—$1,540.53
El Centro, CACalifornia—$1,541.91
Fresno, CACalifornia—$1,540.53
Hanford, CACalifornia—$1,540.53

22551 rates by state

Office rate range in each state. Select a state to see its payment localities.

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Local rates. Clear comparisons.

Hover or focus a tile to see its rate range. Select it to open the state’s fee schedule.

View every state and territory as a table
22551 office rate range by state
State / territoryOffice rate rangeLocalities
AKNo published base rate1
ALNo published base rate1
ARNo published base rate1
AZNo published base rate1
CANo published base rate29
CONo published base rate1
CTNo published base rate1
DCNo published base rate1
DENo published base rate1
FLNo published base rate3
GANo published base rate2
GUNo published base rate1
HINo published base rate1
IANo published base rate1
IDNo published base rate1
ILNo published base rate4
INNo published base rate1
KSNo published base rate1
KYNo published base rate1
LANo published base rate2
MANo published base rate2
MDNo published base rate3
MENo published base rate2
MINo published base rate2
MNNo published base rate1
MONo published base rate3
MSNo published base rate1
MTNo published base rate1
NCNo published base rate1
NDNo published base rate1
NENo published base rate1
NHNo published base rate1
NJNo published base rate2
NMNo published base rate1
NVNo published base rate1
NYNo published base rate5
OHNo published base rate1
OKNo published base rate1
ORNo published base rate2
PANo published base rate2
PRNo published base rate1
RINo published base rate1
SCNo published base rate1
SDNo published base rate1
TNNo published base rate1
TXNo published base rate8
UTNo published base rate1
VANo published base rate2
VINo published base rate1
VTNo published base rate1
WANo published base rate2
WINo published base rate1
WVNo published base rate1
WYNo published base rate1

See 22551 in every payment locality

How the 22551 rate is calculated

Each of 22551’s three RVUs is multiplied by a geographic index (GPCI) for the payment locality, added up, and multiplied by the conversion factor. Drag the indexes or enter a ZIP to see what moves the rate.

How the rate is built · 22551

RVUs × geographic indexes × conversion factor

Office or facility?

Work24.38

24.38 RVUs× 1.000 GPCI

Practice expense15.43

15.43 RVUs× 1.000 GPCI

Malpractice8.24

8.24 RVUs× 1.000 GPCI

Adjusted RVUs

48.0500

Conversion factor

$33.4009

Medicare rate

$1,604.91

Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.

The exact Montana inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

2,083

Code
22551
Physician work
24.38
Practice expense
15.43
Malpractice
8.24

GPCI2026.csv

71

Locality
Montana
Physician work
1.000
Practice expense
1.000
Malpractice
0.998
Facility calculation for 22551 in Montana
ComponentRVULocality factorAdjusted
Physician work24.38× 1.00024.3800
Practice expense15.43× 1.00015.4300
Malpractice8.24× 0.9988.2235
Total RVUs48.0335
Conversion factor× 33.4009

Facility rate, Montana$1604.36

Facility: (24.38 × 1 + 15.43 × 1 + 8.24 × 0.998) × $33.4009 = $1604.36

Open 22551 in the RVU calculator

Payment rules and modifiers for 22551

22551 has a 90-day global period: related visits in that window are included in the surgery payment.

CMS payment indicators · 22551

ACDF, one cervical interspace with decompression

RuleCMS valueWhat it means
Global period090Major surgery: the day before, the day of, and 90 days after are included.
Multiple procedures2Standard reduction: highest-valued procedure at 100%, others at 50%.
Bilateral (modifier 50)0The 150% bilateral adjustment doesn’t apply.
Assistant at surgery (80/81/82/AS)2Paid.
Co-surgeons (62)2Permitted.
Team surgery (66)0Not permitted.
Professional/technical0Physician service: no professional/technical split.
Split (54/55/56)0.10/0.69/0.21Share of the payment for pre-op, the procedure itself, and post-op care.

Global surgery period · 22551

ACDF, one cervical interspace with decompression

90-day global period ends

Dec 30, 2026

Covers Sep 30, 2026 through Dec 30, 2026 (92 days, including the day before surgery).

Visit on Oct 31, 2026

Day 30 of the 90-day post-op period: related follow-up care is included in the surgical payment.

  • 24Unrelated E/M visit by the same physician
  • 79Unrelated procedure (starts its own global period)
  • 58Staged, more extensive, or therapy procedure that was planned
  • 78Unplanned return to the operating room for a related complication
SurgeryVisit
Sep 23, 2026Jan 10, 2027

Pre-op dayGlobal period

What modifiers do to the payment

Modifier 51 · payment effect

With and without the modifier

22551 without 51 · national facility

$1,604.91

ACDF, one cervical interspace with decompression

22551-51 · Second procedure: 50%

$802.46

When this isn’t the highest-valued procedure in the session, Medicare pays 50% of its fee schedule amount (the highest is paid at 100%).

When to use modifier 51

How 22551 has changed in Montana

22551 · Office / nonfacility

Rate unavailable

Effective 2026-10-01

A rate is unavailable in one of these releases, so a change cannot be calculated.

Base rate by release · bars start at $0 · select a bar to compare

One bar per available release, ordered by effective date. Missing rates remain gaps. These comparisons hold the code, setting and locality identifiers constant; they do not isolate which policy or input caused a change.

What changed, release by release
Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01Not available in this setting$1,604.36RVU26D
2026-07-01Not available in this setting$1,604.36RVU26C
2026-04-01Not available in this setting$1,604.36RVU26B
2026-01-01Not available in this setting$1,604.36RVU26A
2025-10-01Not available in this setting$1,667.78RVU25D
2025-07-01Not available in this setting$1,667.78RVU25C
2025-04-01Not available in this setting$1,667.78RVU25B
2025-01-01Not available in this setting$1,667.78RVU25A
2024-10-01Not available in this setting$1,708.21RVU24D
2024-07-01Not available in this setting$1,708.21RVU24C
2024-04-01Not available in this setting$1,708.21RVU24B
2024-03-09Not available in this setting$1,708.21RVU24AR
2024-01-01Not available in this setting$1,680.33RVU24A
2023-10-01Not available in this setting$1,726.59RVU23D
2023-07-01Not available in this setting$1,726.59RVU23C
2023-04-01Not available in this setting$1,726.59RVU23B
2023-01-01Not available in this setting$1,726.59RVU23A
2022-10-01Not available in this setting$1,741.35RVU22D
2022-07-01Not available in this setting$1,741.35RVU22C
2022-04-01Not available in this setting$1,741.35RVU22B
2022-01-01Not available in this setting$1,741.35RVU22A
2021-10-01Not available in this setting$1,746.55RVU21D
2021-07-01Not available in this setting$1,746.55RVU21C
2021-04-01Not available in this setting$1,746.55RVU21B
2021-01-01Not available in this setting$1,746.55RVU21A
2020-10-01Not available in this setting$1,866.14RVU20D
2020-07-01Not available in this setting$1,866.14RVU20C
2020-04-01Not available in this setting$1,866.14RVU20B
2020-01-01Not available in this setting$1,866.14RVU20A
2019-10-01Not available in this setting$1,972.31RVU19D
2019-07-01Not available in this setting$1,972.31RVU19C
2019-04-01Not available in this setting$1,972.31RVU19B
2019-01-01Not available in this setting$1,972.31RVU19A
2018-10-01Not available in this setting$1,970.81RVU18D
2018-07-01Not available in this setting$1,970.81RVU18C
2018-04-01Not available in this setting$1,970.81RVU18B
2018-01-01Not available in this setting$1,970.81RVU18AR1
2017-10-01Not available in this setting$1,914.17RVU17D
2017-07-01Not available in this setting$1,914.17RVU17C
2017-04-01Not available in this setting$1,914.17RVU17B
2017-01-01Not available in this setting$1,914.17RVU17A
2016-10-01Not available in this setting$1,856.57RVU16D
2016-07-01Not available in this setting$1,856.57RVU16C
2016-04-01Not available in this setting$1,856.57RVU16B
2016-01-01Not available in this setting$1,856.57RVU16A
2015-10-01Not available in this setting$1,872.72RVU15D
2015-07-01Not available in this setting$1,872.72RVU15C
2015-04-01Not available in this setting$1,863.40RVU15B
2015-01-01Not available in this setting$1,863.40RVU15A
2014-10-01Not available in this setting$1,801.34RVU14D
2014-07-01Not available in this setting$1,801.34RVU14C
2014-04-01Not available in this setting$1,801.34RVU14B
2014-01-01Not available in this setting$1,801.34RVU14A
2013-10-01Not available in this setting$1,760.00RVU13D
2013-07-01Not available in this setting$1,760.00RVU13C
2013-04-01Not available in this setting$1,760.00RVU13B
2013-01-01Not available in this setting$1,760.00RVU13AR

Price 22551 for an earlier date of service

Where the Montana rate applies

Montana is a Medicare payment area, not a city. Our Census mapping connects it to 497 cities and communities in Montana. Some span more than one payment area; confirm with the service ZIP.

  • Absarokee
  • Acton
  • Alberton
  • Alder
  • Alzada
  • Amsterdam
  • Anaconda-Deer Lodge County
  • Antelope

Browse all communities in Montana

22551 billing questions

When should 22551 be chosen over 22554?

Use 22551 when the surgeon performs cervical decompression along with the fusion at the interspace. Code 22554 describes cervical anterior fusion without that decompression work.

Can 22552 be reported with 22551?

Yes. Report 22552 as the add-on for each additional cervical interspace treated with the qualifying fusion and decompression service.

Is the discectomy separately reported at the 22551 level?

No. Disc removal, osteophyte removal, and neural decompression at the treated level are included in 22551.

What should the operative report document?

Document the cervical level, the decompression performed, the fusion work, and the number of interspaces treated. The record should support that the work at the 22551 level included decompression as well as fusion.

Can an assistant or co-surgeon be reported?

CMS permits payment for an assistant at surgery and permits co-surgeons for this code. Team-surgery billing is not permitted.

Should modifier 50 be used for two-sided cervical work?

No. Modifier 50 is inappropriate for this code's anatomy; report the treated interspace rather than bilateral units.

Where these rates come from

FeeBase calculates base physician payments from CMS work, practice-expense and malpractice RVUs, adjusted by each locality’s geographic indexes and the conversion factor. Services without a published rate are labeled, never given a made-up amount. Amounts are Medicare allowed amounts before claim adjustments: not a patient’s bill or a commercial rate.

CMS RVU26D · effective Oct 1, 2026 through the day before Jan 1, 2027

Show the CMS file lines behind this rate
RVUs for 22551PPRRVU2026_Oct_nonQPP.csv, line 2,083 (RVU26D)
Geographic factors for MontanaGPCI2026.csv, line 71 (RVU26D)

Open CMS sourceHow we calculate rates

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