CPT code 97113: Aquatic therapy, pool-based exercise, per 15 minutes2026 Medicare rate & RVUs in Suburban Chicago, IL

Report aquatic therapeutic exercise for direct, one-on-one treatment in a pool when water supports strengthening, range of motion, balance, or mobility goals.

CMS RVU26DEffective Oct 1, 2026One payment locality1.6M Medicare services in 2024

In Suburban Chicago, IL, Medicare pays $38.00 for 97113 in the office.

$38.00Office (non-facility)
Not available in this settingHospital or facility
+2.5%vs the national office rate ($37.07)

Check a contract rate as a % of Medicare · 97113 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 97113 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Suburban Chicago, IL
  2. What 97113 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 97113 covers

Aquatic therapy uses exercise in a pool, where buoyancy reduces joint loading and water provides resistance. Physical therapists, occupational therapists, and supervised therapy assistants provide it to patients who have difficulty tolerating land-based activity, including those recovering from joint replacement or managing osteoarthritis or neurologic weakness. Treatment may include water walking, resisted limb movements, balance drills, and flexibility exercises. The clinician provides direct one-on-one contact, whether working from the pool deck or in the water.

Report 97113 in 15-minute units based on direct treatment time, not the patient's total time in the pool. Documentation should identify the exercises, direct treatment minutes, and why the aquatic environment supports the plan of care. For Medicare, identify the therapy discipline with GP or GO, as appropriate, and determine units using the total timed therapy minutes furnished that day. This therapy service has no separate professional component for modifier 26. Under Medicare's therapy multiple procedure payment reduction, the practice expense portion is reduced for the second and later therapy units on the same day, including additional 97113 units.

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 Suburban Chicago, IL compares for 97113

Across 109 of 109 payment localities, the office rate for 97113 runs from $33.99 in Arkansas to $47.84 in San Benito County, CA. Suburban Chicago, IL pays $38.00. The RVUs are the same everywhere; the geographic indexes change the dollars.

97113 in Suburban Chicago, IL vs other payment areas
  1. Suburban Chicago, IL · this page$38.00
  2. Chicago, IL · Illinois$37.72−$0.28
  3. East St. Louis, IL · Illinois$35.76−$2.24
  4. Rest of Illinois · Illinois$35.46−$2.54
  5. Los Angeles, CA · California$41.41+$3.41
  6. Washington, DC area · District of Columbia$41.66+$3.66
  7. Miami, FL · Florida$38.43+$0.43

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

Every other payment area

97113 in every other Medicare payment locality
Payment localityOfficeFacility
Manhattan, NYNew York$41.65—
AlaskaAlaska$46.29—
AlabamaAlabama$34.34—
ArkansasArkansas$33.99—
ArizonaArizona$36.38—
Bakersfield, CACalifornia$39.24—
Chico, CACalifornia$39.18—
El Centro, CACalifornia$39.18—

97113 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.

$33.99

$46.29

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

View every state and territory as a table
97113 office rate range by state
State / territoryOffice rate rangeLocalities
AK$46.291
AL$34.341
AR$33.991
AZ$36.381
CA$39.18–$47.8429
CO$38.521
CT$39.061
DC$41.661
DE$36.871
FL$36.33–$38.433
GA$34.90–$37.522
GU$39.771
HI$39.771
IA$35.111
ID$35.241
IL$35.46–$38.004
IN$35.391
KS$34.921
KY$34.751
LA$34.68–$35.902
MA$38.36–$41.712
MD$37.46–$41.663
ME$35.29–$36.772
MI$35.32–$36.582
MN$37.441
MO$34.21–$36.083
MS$34.111
MT$37.071
NC$35.571
ND$36.881
NE$35.271
NH$37.881
NJ$39.65–$41.422
NM$35.421
NV$37.041
NY$35.94–$42.305
OH$35.281
OK$34.781
OR$36.89–$39.542
PA$35.36–$38.282
PR$37.301
RI$38.031
SC$35.451
SD$36.851
TN$35.041
TX$35.19–$38.278
UT$35.801
VA$36.62–$41.662
VI$37.301
VT$36.701
WA$38.30–$42.522
WI$35.971
WV$34.511
WY$36.991

See 97113 in every payment locality

How the 97113 rate is calculated

Each of 97113’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 · 97113

RVUs × geographic indexes × conversion factor

Office or facility?

Work0.48

0.48 RVUs× 1.000 GPCI

Practice expense0.62

0.62 RVUs× 1.000 GPCI

Malpractice0.01

0.01 RVUs× 1.000 GPCI

Adjusted RVUs

1.1100

Conversion factor

$33.4009

Medicare rate

$37.07

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

The exact Suburban Chicago, IL inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

12,861

Code
97113
Physician work
0.48
Practice expense
0.62
Malpractice
0.01

GPCI2026.csv

50

Locality
Suburban Chicago, IL
Physician work
1.007
Practice expense
1.027
Malpractice
1.772
Office calculation for 97113 in Suburban Chicago, IL
ComponentRVULocality factorAdjusted
Physician work0.48× 1.0070.4834
Practice expense0.62× 1.0270.6367
Malpractice0.01× 1.7720.0177
Total RVUs1.1378
Conversion factor× 33.4009

Office rate, Suburban Chicago, IL$38.00

Office: (0.48 × 1.007 + 0.62 × 1.027 + 0.01 × 1.772) × $33.4009 = $38.00

Open 97113 in the RVU calculator

Payment rules and modifiers for 97113

The CMS indicators that decide how 97113 is paid alongside other services.

CMS payment indicators · 97113

Aquatic therapy, pool-based exercise, per 15 minutes

RuleCMS valueWhat it means
Global periodXXXThe global surgery concept doesn’t apply.
Multiple procedures5Therapy reduction: practice expense of the second and later units is reduced.
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/technical7Therapy service: the split doesn’t apply.

What modifiers do to the payment

Modifier CQ · payment effect

With and without the modifier

97113 without CQ · national office

$37.07

Aquatic therapy, pool-based exercise, per 15 minutes

97113-CQ · Allowed amount unchanged

$37.07

Medicare cuts its own payment by 15% after the patient’s 20% coinsurance; the allowed amount stays the same. On $100 allowed: $20 coinsurance, then Medicare pays $68 instead of $80.

How 97113 has changed in Suburban Chicago, IL

97113 · Office / nonfacility

$38.00

Effective 2026-10-01

The base rate is $0.17 higher than on 2025-10-01, moving from $37.83 to $38.00 (0.4%).

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

    $37.83changed to$38.00

    • Conversion factor 32.3465 changed to 33.4009
    • Practice expense RVU 0.64 changed to 0.62
    • Practice expense GPCI 1.048 changed to 1.027
    • Malpractice GPCI 1.556 changed to 1.772

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    $37.89changed to$37.83

    • Conversion factor 33.2875 changed to 32.3465
    • Practice expense RVU 0.61 changed to 0.64

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $37.27changed to$37.89

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $38.71changed to$37.27

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense GPCI 1.055 changed to 1.048
    • Malpractice GPCI 1.530 changed to 1.556
  5. January 1, 2023

    RVU23A

    $39.44changed to$38.71

    • Conversion factor 34.6062 changed to 33.8872
    • Practice expense RVU 0.59 changed to 0.61
    • Malpractice RVU 0.02 changed to 0.01
    • Work GPCI 1.006 changed to 1.007
    • Practice expense GPCI 1.062 changed to 1.055
    • Malpractice GPCI 1.504 changed to 1.530

    Held through RVU23B, RVU23C, RVU23D.

  6. January 1, 2022

    RVU22A

    $40.13changed to$39.44

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 0.60 changed to 0.59

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $41.46changed to$40.13

    • Conversion factor 36.0896 changed to 34.8931
    • Work GPCI 1.008 changed to 1.006
    • Practice expense GPCI 1.057 changed to 1.062
    • Malpractice GPCI 1.535 changed to 1.504

    Held through RVU21B, RVU21C, RVU21D.

  8. January 1, 2020

    RVU20A

    $41.35changed to$41.46

    • Conversion factor 36.0391 changed to 36.0896
    • Work GPCI 1.009 changed to 1.008
    • Practice expense GPCI 1.053 changed to 1.057
    • Malpractice GPCI 1.565 changed to 1.535

    Held through RVU20B, RVU20C, RVU20D.

  9. January 1, 2019

    RVU19A

    $41.69changed to$41.35

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 0.61 changed to 0.60

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $45.69changed to$41.69

    • Conversion factor 35.8887 changed to 35.9996
    • Work RVU 0.44 changed to 0.48
    • Practice expense RVU 0.77 changed to 0.61
    • Malpractice RVU 0.01 changed to 0.02
    • Work GPCI 1.011 changed to 1.009
    • Practice expense GPCI 1.055 changed to 1.053
    • Malpractice GPCI 1.601 changed to 1.565

    Held through RVU18B, RVU18C, RVU18D.

  11. January 1, 2017

    RVU17A

    $45.29changed to$45.69

    • Conversion factor 35.8043 changed to 35.8887
    • Practice expense RVU 0.76 changed to 0.77
    • Work GPCI 1.012 changed to 1.011
    • Practice expense GPCI 1.057 changed to 1.055
    • Malpractice GPCI 1.636 changed to 1.601

    Held through RVU17B, RVU17C, RVU17D.

  12. January 1, 2016

    RVU16A

    $45.45changed to$45.29

    • Conversion factor 35.9335 changed to 35.8043

    Held through RVU16B, RVU16C, RVU16D.

  13. July 1, 2015

    RVU15C

    $45.23changed to$45.45

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  14. January 1, 2015

    RVU15A

    $45.66changed to$45.23

    • Conversion factor 35.8228 changed to 35.7547
    • Work GPCI 1.019 changed to 1.012
    • Practice expense GPCI 1.065 changed to 1.057
    • Malpractice GPCI 1.671 changed to 1.636

    Held through RVU15B.

  15. January 1, 2014

    RVU14A

    $46.20changed to$45.66

    • Conversion factor 34.0230 changed to 35.8228
    • Practice expense RVU 0.83 changed to 0.76
    • Work GPCI 1.025 changed to 1.019
    • Practice expense GPCI 1.072 changed to 1.065
    • Malpractice GPCI 1.706 changed to 1.671

    Held through RVU14B, RVU14C, RVU14D.

  16. October 1, 2013

    RVU13D

    No ratechanged to$46.20

  17. January 1, 2013

    RVU13AR

    Earliest loaded release: No rate

    Held through RVU13B, RVU13C.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$38.00Not available in this settingRVU26D
2026-07-01$38.00Not available in this settingRVU26C
2026-04-01$38.00Not available in this settingRVU26B
2026-01-01$38.00Not available in this settingRVU26A
2025-10-01$37.83Not available in this settingRVU25D
2025-07-01$37.83Not available in this settingRVU25C
2025-04-01$37.83Not available in this settingRVU25B
2025-01-01$37.83Not available in this settingRVU25A
2024-10-01$37.89Not available in this settingRVU24D
2024-07-01$37.89Not available in this settingRVU24C
2024-04-01$37.89Not available in this settingRVU24B
2024-03-09$37.89Not available in this settingRVU24AR
2024-01-01$37.27Not available in this settingRVU24A
2023-10-01$38.71Not available in this settingRVU23D
2023-07-01$38.71Not available in this settingRVU23C
2023-04-01$38.71Not available in this settingRVU23B
2023-01-01$38.71Not available in this settingRVU23A
2022-10-01$39.44Not available in this settingRVU22D
2022-07-01$39.44Not available in this settingRVU22C
2022-04-01$39.44Not available in this settingRVU22B
2022-01-01$39.44Not available in this settingRVU22A
2021-10-01$40.13Not available in this settingRVU21D
2021-07-01$40.13Not available in this settingRVU21C
2021-04-01$40.13Not available in this settingRVU21B
2021-01-01$40.13Not available in this settingRVU21A
2020-10-01$41.46Not available in this settingRVU20D
2020-07-01$41.46Not available in this settingRVU20C
2020-04-01$41.46Not available in this settingRVU20B
2020-01-01$41.46Not available in this settingRVU20A
2019-10-01$41.35Not available in this settingRVU19D
2019-07-01$41.35Not available in this settingRVU19C
2019-04-01$41.35Not available in this settingRVU19B
2019-01-01$41.35Not available in this settingRVU19A
2018-10-01$41.69Not available in this settingRVU18D
2018-07-01$41.69Not available in this settingRVU18C
2018-04-01$41.69Not available in this settingRVU18B
2018-01-01$41.69Not available in this settingRVU18AR1
2017-10-01$45.69Not available in this settingRVU17D
2017-07-01$45.69Not available in this settingRVU17C
2017-04-01$45.69Not available in this settingRVU17B
2017-01-01$45.69Not available in this settingRVU17A
2016-10-01$45.29Not available in this settingRVU16D
2016-07-01$45.29Not available in this settingRVU16C
2016-04-01$45.29Not available in this settingRVU16B
2016-01-01$45.29Not available in this settingRVU16A
2015-10-01$45.45Not available in this settingRVU15D
2015-07-01$45.45Not available in this settingRVU15C
2015-04-01$45.23Not available in this settingRVU15B
2015-01-01$45.23Not available in this settingRVU15A
2014-10-01$45.66Not available in this settingRVU14D
2014-07-01$45.66Not available in this settingRVU14C
2014-04-01$45.66Not available in this settingRVU14B
2014-01-01$45.66Not available in this settingRVU14A
2013-10-01$46.20Not available in this settingRVU13D
2013-07-01Rate data unavailableNot available in this settingRVU13C
2013-04-01Rate data unavailableNot available in this settingRVU13B
2013-01-01Rate data unavailableNot available in this settingRVU13AR

Price 97113 for an earlier date of service

Where the Suburban Chicago, IL rate applies

Suburban Chicago, IL is a Medicare payment area, not a city. Our Census mapping connects it to 178 cities and communities in Illinois. Some span more than one payment area; confirm with the service ZIP.

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97113 billing questions

When should 97113 be reported instead of 97110?

Use 97113 when exercise is performed in a pool and the water is part of the therapeutic intervention. Use 97110 for land-based therapeutic exercise.

Can aquatic therapy be billed for a group class in the pool?

97113 requires direct one-on-one contact. For group-directed pool exercise provided to two or more patients simultaneously, report the untimed group therapy code 97150 instead.

How are units counted for 97113?

Count direct one-on-one treatment minutes. Under Medicare's 8-minute rule, 8 to 22 minutes supports one unit and 23 to 37 minutes supports two units when 97113 is the only timed therapy service; when multiple timed services are furnished, determine total units from their combined timed minutes and allocate units to the services performed.

Should gait or balance work done in the pool be coded separately as 97116 or 97112?

Water walking and balance exercises performed as part of aquatic therapy are included in 97113 for those minutes. Separate 97116 or 97112 units require distinct treatment time for the respective intervention.

What documentation supports medical necessity for aquatic rather than land therapy?

Document why the water environment supports treatment, such as pain or limited weight-bearing tolerance during land exercise. Record the exercises performed, direct treatment minutes, and their connection to the patient's goals.

Does the therapy reduction apply to every 97113 unit?

No. Medicare reduces the practice expense portion for second and later therapy units on the same day, including additional 97113 units; it does not reduce every unit solely because 97113 was reported.

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 97113PPRRVU2026_Oct_nonQPP.csv, line 12,861 (RVU26D)
Geographic factors for Suburban Chicago, ILGPCI2026.csv, line 50 (RVU26D)

Open CMS sourceHow we calculate rates

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