98940 applies when one or two spinal regions are manipulated. Use 98941 when treatment and documentation support a third or fourth region.
On this page
CMS RVU26D · Effective 2026-10-01
98941 Chiropractic adjustment Medicare reimbursement rates in Illinois
Report chiropractic manipulation of three or four spinal regions when a chiropractor treats documented subluxations in those regions during one visit. Compare 98941 office and facility rates across CMS payment localities in Illinois.
Amounts below use the non-QP conversion factor for participating physicians. These are base physician payments before claim-level adjustments, not patient costs or total hospital charges.
What does Medicare pay for 98941 in Illinois?
Illinois has 4 payment localities in this comparison. Use the service location to choose the applicable amount. These are the supported base rates for the 4 payment areas shown below, using the same CMS release.
Office / nonfacility
$37.29–$39.24
4 of 4 localities have a supported rate.
Facility setting
$27.84–$28.67
4 of 4 localities have a supported rate.
These are locality ranges, not averages or address-specific quotes. A facility-setting amount covers the physician service; it does not include a hospital’s separate bill. Choose a locality below to inspect its calculation, compare other payment areas, or price a percentage of Medicare.
Where 98941 pays more and less in Illinois
4 payment localities
$37.29 to $39.24
Chiropractic manipulative treatment
About 98941: Chiropractic spinal manipulation, three to four regions
Report chiropractic manipulation of three or four spinal regions when a chiropractor treats documented subluxations in those regions during one visit.
A chiropractor manipulates three or four of the five spinal regions: cervical, thoracic, lumbar, sacral, and pelvic. Treatment usually occurs in an office and may use hands-on, instrument-assisted, or drop-table techniques. A visit treating documented subluxations in the cervical, thoracic, and lumbar regions is an example. Count regions treated, not individual vertebrae adjusted or sides of the spine.
Document the subluxation, supporting findings, and manipulation for each counted region. Medicare covers a chiropractor’s manual spinal manipulation to correct subluxation when the subluxation is established by X-ray or physical examination. A physical examination must document at least two PART findings, including asymmetry or restricted range of motion. Use modifier AT for active or corrective treatment; Medicare treats claims without AT as maintenance care and denies them. The 0-day global period includes routine same-day preoperative and postoperative care. Modifier 50 is inappropriate. Assistant-at-surgery payment requires documentation of medical necessity; co-surgeons and team surgery are not permitted.
CMS billing rules for 98941
- Global period
- Minor procedure with a 0-day global period: same-day preoperative and postoperative care is included.
- Bilateral procedures
- Bilateral adjustment does not apply; the descriptor or anatomy makes modifier 50 inappropriate.
- Assistant at surgery
- Assistant at surgery is paid only with documentation of medical necessity.
- Co-surgeons
- Co-surgeons not permitted.
- Team surgery
- Team surgery not permitted.
Where the value comes from
- Work RVU0.69 · 60%
- Practice expense (office) RVU0.45 · 39%
- Malpractice RVU0.01 · 1%
12.8M
Medicare services in 2024 · #15 by national volume
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.
98941 compared with similar codes
Office rates for Illinois, from the same CMS release.
98942 requires manipulation of all five spinal regions. Use 98941 for three or four documented, treated regions; use 98940 for one or two.
98926 describes osteopathic manipulation of three or four body regions, selected from a different set of regions. 98941 describes chiropractic manipulation of three or four spinal regions.
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98943 describes manipulation of extraspinal regions, such as an extremity; 98941 counts only spinal regions. The two may be reported together when both services are performed, although Medicare does not cover 98943.
Compare 98941 by payment locality
Find the payment area for your service address, then open its rate page for calculation inputs, release history and the percentage-of-Medicare tool. A city may cross payment-area boundaries; the ZIP lookup above helps resolve the location.
4 of 4 payment localities
Chicago →
Office / nonfacility
$39.08
Facility
$28.67
East St. Louis →
Office / nonfacility
$37.55
Facility
$28.02
Rest Of Illinois →
Office / nonfacility
$37.29
Facility
$27.84
Suburban Chicago →
Office / nonfacility
$39.24
Facility
$28.60
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98941 billing questions
How do I choose between 98940, 98941, and 98942?
Count the distinct spinal regions manipulated and supported by documented subluxations. Use 98940 for one or two regions, 98941 for three or four, and 98942 for all five.
Is the AT modifier required on 98941 for Medicare?
Use AT when the manipulation is active or corrective treatment. Medicare treats a chiropractic manipulation claim without AT as maintenance care and denies it.
Can an E/M visit be billed on the same day as 98941?
Medicare does not cover E/M services furnished by chiropractors, even with modifier 25. For a payer that covers the E/M service, a significant, separately identifiable visit may be reported with modifier 25 on the E/M code; routine assessment around the manipulation is included.
What documentation supports each region counted?
Identify the subluxation and supporting findings for each region, and record the manipulation performed there. For Medicare, a physical examination used to establish subluxation must include at least two PART findings, one of which is asymmetry or restricted motion.
Does Medicare pay for extraspinal manipulation done at the same visit?
Medicare does not cover extraspinal chiropractic manipulation under 98943. Another insurer may cover 98943 alongside 98941 when both spinal and extraspinal regions are treated.
Should modifier 50 be used if both sides of the spine are adjusted?
No. Select 98941 by the number of spinal regions manipulated, not by laterality; 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 indices and the applicable conversion factor. Unavailable or separately priced services are labeled rather than assigned a made-up amount.
Source: RVU26D. Effective 2026-10-01 through the day before 2027-01-01.
