CPT code 98940: Chiropractic adjustment, spinal, 1–2 regions2026 Medicare rate & RVUs in Idaho

Report chiropractic spinal manipulation of one or two regions when those regions are adjusted during an encounter to treat a documented spinal subluxation.

CMS RVU26DEffective Oct 1, 2026One payment locality3.7M Medicare services in 2024

In Idaho, Medicare pays $25.64 for 98940 in the office and $17.95 when it’s performed in a hospital or facility.

$25.64Office (non-facility)
$17.95Hospital or facility
−4.0%vs the national office rate ($26.72)

Check a contract rate as a % of Medicare · 98940 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 98940 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Idaho
  2. What 98940 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 98940 covers

This service involves chiropractic adjustment of one or two of the five spinal regions: cervical, thoracic, lumbar, sacral, and pelvic. A patient with low back pain might receive treatment in the lumbar and pelvic regions; a patient with neck pain might receive treatment in the cervical region. Doctors of chiropractic typically perform the service in an office. For Medicare coverage of care furnished by a chiropractor, the manipulation must be directed at correcting a spinal subluxation.

Count distinct regions adjusted, not individual vertebral segments; manipulation of three or four regions is reported with 98941. Medicare requires evidence of subluxation by x-ray or physical examination. Examination findings use PART: pain or tenderness, asymmetry or misalignment, range-of-motion abnormality, and tissue or tone change. Document the regions treated, findings, treatment plan, and progress; append modifier AT for active or corrective treatment, not maintenance care. The 0-day global period includes same-day preoperative and postoperative care. Modifier 50 is inappropriate. CMS permits assistant-at-surgery payment only with documented medical necessity; co-surgeons and team surgery are 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 Idaho compares for 98940

Across 109 of 109 payment localities, the office rate for 98940 runs from $24.96 in Arkansas to $34.82 in Alaska. Idaho pays $25.64. The RVUs are the same everywhere; the geographic indexes change the dollars.

98940 in Idaho vs other payment areas
  1. Idaho · this page$25.64
  2. Los Angeles, CA · California$29.30+$3.66
  3. Washington, DC area · District of Columbia$29.59+$3.95
  4. Miami, FL · Florida$27.70+$2.06
  5. Chicago, IL · Illinois$27.32+$1.68
  6. Manhattan, NY · New York$29.72+$4.08
  7. Alaska · Alaska$34.82+$9.18

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

Every other payment area

98940 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama$25.16$17.85
ArkansasArkansas$24.96$17.78
ArizonaArizona$26.32$18.23
Bakersfield, CACalifornia$27.97$18.81
Chico, CACalifornia$27.91$18.76
El Centro, CACalifornia$27.91$18.76
Fresno, CACalifornia$27.91$18.76
Hanford, CACalifornia$27.91$18.76

98940 rates by state

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

Explore a state

Local rates. Clear comparisons.

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

$24.96

$34.82

Color shows the midpoint of each state’s locality range.

View every state and territory as a table
98940 office rate range by state
State / territoryOffice rate rangeLocalities
AK$34.821
AL$25.161
AR$24.961
AZ$26.321
CA$27.91–$33.2429
CO$27.551
CT$27.971
DC$29.591
DE$26.631
FL$26.39–$27.703
GA$25.56–$27.012
GU$28.141
HI$28.141
IA$25.551
ID$25.641
IL$25.92–$27.394
IN$25.721
KS$25.461
KY$25.431
LA$25.40–$26.102
MA$27.50–$29.502
MD$26.98–$29.593
ME$25.69–$26.502
MI$25.78–$26.552
MN$26.811
MO$25.14–$26.183
MS$25.061
MT$26.721
NC$25.841
ND$26.521
NE$25.641
NH$27.141
NJ$28.40–$29.512
NM$25.851
NV$26.681
NY$26.05–$30.125
OH$25.741
OK$25.431
OR$26.58–$28.142
PA$25.77–$27.522
PR$26.841
RI$27.341
SC$25.811
SD$26.501
TN$25.531
TX$25.67–$27.378
UT$26.011
VA$26.43–$29.592
VI$26.841
VT$26.441
WA$27.44–$29.992
WI$26.011
WV$25.381
WY$26.631

See 98940 in every payment locality

How the 98940 rate is calculated

Each of 98940’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 · 98940

RVUs × geographic indexes × conversion factor

Office or facility?

Work0.45

0.45 RVUs× 1.000 GPCI

Practice expense0.34

0.34 RVUs× 1.000 GPCI

Malpractice0.01

0.01 RVUs× 1.000 GPCI

Adjusted RVUs

0.8000

Conversion factor

$33.4009

Medicare rate

$26.72

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

The exact Idaho inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

12,942

Code
98940
Physician work
0.45
Practice expense
0.34
Malpractice
0.01

GPCI2026.csv

47

Locality
Idaho
Physician work
1.000
Practice expense
0.920
Malpractice
0.473
Office calculation for 98940 in Idaho
ComponentRVULocality factorAdjusted
Physician work0.45× 1.0000.4500
Practice expense0.34× 0.9200.3128
Malpractice0.01× 0.4730.0047
Total RVUs0.7675
Conversion factor× 33.4009

Office rate, Idaho$25.64

Office: (0.45 × 1 + 0.34 × 0.92 + 0.01 × 0.473) × $33.4009 = $25.64

Facility: (0.45 × 1 + 0.09 × 0.92 + 0.01 × 0.473) × $33.4009 = $17.95

Open 98940 in the RVU calculator

Payment rules and modifiers for 98940

The CMS indicators that decide how 98940 is paid alongside other services.

CMS payment indicators · 98940

Chiropractic adjustment, spinal, 1–2 regions

RuleCMS valueWhat it means
Global period000Same-day global: pre- and post-op care on the day of the procedure is included.
Multiple procedures0No multiple-procedure reduction.
Bilateral (modifier 50)0The 150% bilateral adjustment doesn’t apply.
Assistant at surgery (80/81/82/AS)0Not paid without supporting documentation.
Co-surgeons (62)0Not permitted.
Team surgery (66)0Not permitted.
Professional/technical0Physician service: no professional/technical split.

How 98940 has changed in Idaho

98940 · Office / nonfacility

$25.64

Effective 2026-10-01

The base rate is $0.33 higher than on 2025-10-01, moving from $25.31 to $25.64 (1.3%).

It is unchanged from the immediately preceding available release, effective 2026-07-01.

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
  1. January 1, 2026

    RVU26A

    $25.31changed to$25.64

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 0.46 changed to 0.45
    • Practice expense RVU 0.35 changed to 0.34
    • Practice expense GPCI 0.908 changed to 0.920
    • Malpractice GPCI 0.461 changed to 0.473

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    $26.04changed to$25.31

    • Conversion factor 33.2875 changed to 32.3465

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $25.62changed to$26.04

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $26.33changed to$25.62

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense GPCI 0.893 changed to 0.908
    • Malpractice GPCI 0.439 changed to 0.461
  5. January 1, 2023

    RVU23A

    $26.38changed to$26.33

    • Conversion factor 34.6062 changed to 33.8872
    • Practice expense RVU 0.34 changed to 0.35
    • Practice expense GPCI 0.877 changed to 0.893
    • Malpractice GPCI 0.416 changed to 0.439

    Held through RVU23B, RVU23C, RVU23D.

  6. January 1, 2022

    RVU22A

    $26.60changed to$26.38

    • Conversion factor 34.8931 changed to 34.6062

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $27.37changed to$26.60

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 0.33 changed to 0.34
    • Practice expense GPCI 0.890 changed to 0.877
    • Malpractice GPCI 0.464 changed to 0.416

    Held through RVU21B, RVU21C, RVU21D.

  8. January 1, 2020

    RVU20A

    $27.35changed to$27.37

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense RVU 0.32 changed to 0.33
    • Malpractice RVU 0.02 changed to 0.01
    • Practice expense GPCI 0.902 changed to 0.890
    • Malpractice GPCI 0.512 changed to 0.464

    Held through RVU20B, RVU20C, RVU20D.

  9. January 1, 2019

    RVU19A

    $27.64changed to$27.35

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 0.33 changed to 0.32

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $27.21changed to$27.64

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense RVU 0.32 changed to 0.33
    • Practice expense GPCI 0.900 changed to 0.902
    • Malpractice GPCI 0.510 changed to 0.512

    Held through RVU18B, RVU18C, RVU18D.

  11. January 1, 2017

    RVU17A

    $27.12changed to$27.21

    • Conversion factor 35.8043 changed to 35.8887
    • Practice expense GPCI 0.898 changed to 0.900
    • Malpractice GPCI 0.508 changed to 0.510

    Held through RVU17B, RVU17C, RVU17D.

  12. January 1, 2016

    RVU16A

    $27.04changed to$27.12

    • Conversion factor 35.9335 changed to 35.8043
    • Malpractice RVU 0.01 changed to 0.02

    Held through RVU16B, RVU16C, RVU16D.

  13. July 1, 2015

    RVU15C

    $26.90changed to$27.04

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  14. January 1, 2015

    RVU15A

    $26.95changed to$26.90

    • Conversion factor 35.8228 changed to 35.7547
    • Practice expense GPCI 0.896 changed to 0.898
    • Malpractice GPCI 0.556 changed to 0.508

    Held through RVU15B.

  15. July 1, 2014

    RVU14C

    No ratechanged to$26.95

    Held through RVU14D.

  16. January 1, 2013

    RVU13AR

    Earliest loaded release: No rate

    Held through RVU13B, RVU13C, RVU13D, RVU14A, RVU14B.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$25.64$17.95RVU26D
2026-07-01$25.64$17.95RVU26C
2026-04-01$25.64$17.95RVU26B
2026-01-01$25.64$17.95RVU26A
2025-10-01$25.31$20.61RVU25D
2025-07-01$25.31$20.61RVU25C
2025-04-01$25.31$20.61RVU25B
2025-01-01$25.31$20.61RVU25A
2024-10-01$26.04$20.91RVU24D
2024-07-01$26.04$20.91RVU24C
2024-04-01$26.04$20.91RVU24B
2024-03-09$26.04$20.91RVU24AR
2024-01-01$25.62$20.56RVU24A
2023-10-01$26.33$21.18RVU23D
2023-07-01$26.33$21.18RVU23C
2023-04-01$26.33$21.18RVU23B
2023-01-01$26.33$21.18RVU23A
2022-10-01$26.38$21.22RVU22D
2022-07-01$26.38$21.22RVU22C
2022-04-01$26.38$21.22RVU22B
2022-01-01$26.38$21.22RVU22A
2021-10-01$26.60$21.40RVU21D
2021-07-01$26.60$21.40RVU21C
2021-04-01$26.60$21.40RVU21B
2021-01-01$26.60$21.40RVU21A
2020-10-01$27.37$22.23RVU20D
2020-07-01$27.37$22.23RVU20C
2020-04-01$27.37$22.23RVU20B
2020-01-01$27.37$22.23RVU20A
2019-10-01$27.35$22.15RVU19D
2019-07-01$27.35$22.15RVU19C
2019-04-01$27.35$22.15RVU19B
2019-01-01$27.35$22.15RVU19A
2018-10-01$27.64$22.12RVU18D
2018-07-01$27.64$22.12RVU18C
2018-04-01$27.64$22.12RVU18B
2018-01-01$27.64$22.12RVU18AR1
2017-10-01$27.21$22.04RVU17D
2017-07-01$27.21$22.04RVU17C
2017-04-01$27.21$22.04RVU17B
2017-01-01$27.21$22.04RVU17A
2016-10-01$27.12$21.98RVU16D
2016-07-01$27.12$21.98RVU16C
2016-04-01$27.12$21.98RVU16B
2016-01-01$27.12$21.98RVU16A
2015-10-01$27.04$21.87RVU15D
2015-07-01$27.04$21.87RVU15C
2015-04-01$26.90$21.77RVU15B
2015-01-01$26.90$21.77RVU15A
2014-10-01$26.95$21.81RVU14D
2014-07-01$26.95$21.81RVU14C
2014-04-01Additional calculation requiredAdditional calculation requiredRVU14B
2014-01-01Additional calculation requiredAdditional calculation requiredRVU14A
2013-10-01Additional calculation requiredAdditional calculation requiredRVU13D
2013-07-01Additional calculation requiredAdditional calculation requiredRVU13C
2013-04-01Additional calculation requiredAdditional calculation requiredRVU13B
2013-01-01Additional calculation requiredAdditional calculation requiredRVU13AR

Price 98940 for an earlier date of service

Where the Idaho rate applies

Idaho is a Medicare payment area, not a city. Our Census mapping connects it to 235 cities and communities in Idaho. Some span more than one payment area; confirm with the service ZIP.

  • Aberdeen
  • Acequia
  • Albion
  • American Falls
  • Ammon
  • Arbon Valley
  • Arco
  • Arimo

Browse all communities in Idaho

98940 billing questions

How are spinal regions counted to choose between 98940 and 98941?

Count the regions actually adjusted among cervical, thoracic, lumbar, sacral, and pelvic. One or two regions is 98940; three or four is 98941. Multiple vertebral levels within one region count as one region.

When is modifier AT required?

Medicare expects AT when chiropractic manipulation is active or corrective treatment of a subluxation. Without AT, Medicare treats the claim as maintenance therapy; AT alone does not establish medical necessity.

Can a chiropractor bill a separate E/M visit on the same day?

Medicare does not separately pay chiropractors for E/M visits. The routine assessment before manipulation and same-day postoperative care are included in 98940.

What documentation supports subluxation for Medicare?

Subluxation must be demonstrated by x-ray or physical examination. The examination route requires at least two PART elements, including asymmetry or misalignment or a range-of-motion abnormality; document the treatment plan and measurable goals.

Can 98940 be billed with extraspinal manipulation?

98943 describes manipulation of extraspinal regions, such as an extremity or the rib cage, and may be reported when separately performed. Medicare does not cover chiropractic extraspinal manipulation furnished by a chiropractor.

Should modifier 50 be used if both sides of the spine are adjusted?

No. Report 98940 once for manipulation of one or two spinal regions during the encounter, regardless of which sides are treated; modifier 50 is inappropriate.

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 98940PPRRVU2026_Oct_nonQPP.csv, line 12,942 (RVU26D)
Geographic factors for IdahoGPCI2026.csv, line 47 (RVU26D)

Open CMS sourceHow we calculate rates

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