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CMS RVU26D · Effective 2026-10-01

91037 in Redding

Office / nonfacility

$201.55

Base rate per service

Facility setting

Not available in this setting

Base rate per service

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.

Gastroenterology

About 91037: Short-duration esophageal impedance test

Reports a short-duration esophageal impedance study used to assess bolus movement and reflux, including nonacid reflux, with interpretation and a report.

This diagnostic study uses an esophageal catheter with impedance sensors to assess movement of liquid or gas through the esophagus and identify reflux events. It can help evaluate persistent reflux symptoms, including suspected nonacid reflux, or swallowing complaints when objective information about esophageal transit is needed. Gastroenterology or esophageal motility practices commonly perform the study, with trained staff placing the catheter and a qualified clinician interpreting the findings. This code is for the recording of one hour or less; the longer-duration service is reported separately under 91038.

Report the service when the documented study includes impedance measurements, analysis, interpretation, and a report. The claim may represent the global service or the professional interpretation with modifier 26 or technical portion with modifier TC. The 0-day global period includes same-day preoperative and postoperative care. Modifier 50 is inappropriate for this service. Assistant-at-surgery payment requires documented medical necessity; co-surgeons and team surgery are not permitted.

CMS billing rules for 91037

Global period
Minor procedure with a 0-day global period: same-day preoperative and postoperative care is included.
Professional and technical components
Diagnostic test with a professional component (modifier 26, interpretation) and a technical component (modifier TC, equipment and staff); billing without a modifier is the global service.
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 RVU0.95 · 17%
  • Practice expense (office) RVU4.59 · 82%
  • Malpractice RVU0.07 · 1%

10K

Medicare services in 2024 · #1465 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.

91037 compared with similar codes

Office rates for Redding, from the same CMS release.

91038

Esophageal impedance

More than one hour

$484.31

Both report esophageal impedance testing; 91037 is for one hour or less, while 91038 is for a recording longer than one hour.

91010

Esophageal manometry

Standard pressure study

$264.45

91010 reports esophageal motility testing. Choose 91037 when the performed study uses impedance to assess bolus movement or reflux.

91034

Reflux monitoring

Nasal catheter pH test

$217.84

91034 reports catheter-based reflux monitoring. 91037 reports an impedance study that evaluates bolus movement and reflux events.

91035

Reflux testing

Mucosa-attached telemetry electrode

$543.68

91035 reports wireless esophageal reflux monitoring; 91037 is the short-duration impedance study.

The same code, a different location

How does Redding compare?

In Bakersfield, the office rate for 91037 is $201.79—$0.24 higher than the $201.55 rate in Redding. Both use the same code, release and participation basis.

91037 across payment areas

Same release and payment basis · bars start at $0

  1. Redding · This locality

    $201.55

  2. Bakersfield

    $201.79

    $0.24 higher than Redding

  3. Chico

    $201.55

    The same base rate than Redding

  4. El Centro

    $201.56

    $0.01 higher than Redding

  5. Fresno

    $201.55

    The same base rate than Redding

  6. Hanford-Corcoran

    $201.55

    The same base rate than Redding

  7. Los Angeles-Long Beach-Anaheim (Los Angeles/Orange Cnty)

    $215.95

    $14.40 higher than Redding

Other payment areas listed in California appear first, followed by selected cross-country examples. The chart compares amounts, not distance.

Across 109 of 109 CMS payment localities with a supported office rate, 91037 ranges from $164.63 in Arkansas to $257.55 in San Jose-Sunnyvale-Santa Clara (San Benito Cnty). This is a geographic range, not an average.

The code’s RVUs stay the same in these comparisons. Geographic adjustments to work, practice expense and malpractice change the dollar amount. A city name alone may not identify the payment area for a service address.

Compare all 108 other payment areas

  • Madera

    California · 91037

    Office

    $201.55

    Facility

    Unavailable

    The same base rate than Redding for the office setting.

  • Merced

    California · 91037

    Office

    $201.55

    Facility

    Unavailable

    The same base rate than Redding for the office setting.

  • Modesto

    California · 91037

    Office

    $201.55

    Facility

    Unavailable

    The same base rate than Redding for the office setting.

  • Napa

    California · 91037

    Office

    $236.98

    Facility

    Unavailable

    $35.43 higher than Redding for the office setting.

  • Oxnard-Thousand Oaks-Ventura

    California · 91037

    Office

    $215.29

    Facility

    Unavailable

    $13.74 higher than Redding for the office setting.

  • Rest Of California

    California · 91037

    Office

    $201.55

    Facility

    Unavailable

    The same base rate than Redding for the office setting.

  • Riverside-San Bernardino-Ontario

    California · 91037

    Office

    $202.32

    Facility

    Unavailable

    $0.77 higher than Redding for the office setting.

  • Sacramento-Roseville-Folsom

    California · 91037

    Office

    $212.43

    Facility

    Unavailable

    $10.88 higher than Redding for the office setting.

  • Salinas

    California · 91037

    Office

    $211.65

    Facility

    Unavailable

    $10.10 higher than Redding for the office setting.

  • San Diego-Chula Vista-Carlsbad

    California · 91037

    Office

    $217.31

    Facility

    Unavailable

    $15.76 higher than Redding for the office setting.

  • San Francisco-Oakland-Berkeley (Marin Cnty)

    California · 91037

    Office

    $251.99

    Facility

    Unavailable

    $50.44 higher than Redding for the office setting.

  • San Francisco-Oakland-Berkeley (San Francisco/San Mateo/Alameda/Contra Costa Cnty)

    California · 91037

    Office

    $251.91

    Facility

    Unavailable

    $50.36 higher than Redding for the office setting.

  • San Jose-Sunnyvale-Santa Clara (San Benito Cnty)

    California · 91037

    Office

    $257.55

    Facility

    Unavailable

    $56.00 higher than Redding for the office setting.

  • San Jose-Sunnyvale-Santa Clara (Santa Clara Cnty)

    California · 91037

    Office

    $257.22

    Facility

    Unavailable

    $55.67 higher than Redding for the office setting.

  • San Luis Obispo-Paso Robles

    California · 91037

    Office

    $208.14

    Facility

    Unavailable

    $6.59 higher than Redding for the office setting.

  • Santa Cruz-Watsonville

    California · 91037

    Office

    $219.92

    Facility

    Unavailable

    $18.37 higher than Redding for the office setting.

  • Santa Maria-Santa Barbara

    California · 91037

    Office

    $212.63

    Facility

    Unavailable

    $11.08 higher than Redding for the office setting.

  • Santa Rosa-Petaluma

    California · 91037

    Office

    $222.20

    Facility

    Unavailable

    $20.65 higher than Redding for the office setting.

  • Stockton

    California · 91037

    Office

    $201.55

    Facility

    Unavailable

    The same base rate than Redding for the office setting.

  • Vallejo

    California · 91037

    Office

    $236.87

    Facility

    Unavailable

    $35.32 higher than Redding for the office setting.

  • Visalia

    California · 91037

    Office

    $201.55

    Facility

    Unavailable

    The same base rate than Redding for the office setting.

  • Yuba City

    California · 91037

    Office

    $201.55

    Facility

    Unavailable

    The same base rate than Redding for the office setting.

  • Dc + Md/Va Suburbs

    District of Columbia · 91037

    Office

    $216.65

    Facility

    Unavailable

    $15.10 higher than Redding for the office setting.

  • Miami

    Florida · 91037

    Office

    $197.24

    Facility

    Unavailable

    $4.31 lower than Redding for the office setting.

  • Chicago

    Illinois · 91037

    Office

    $191.40

    Facility

    Unavailable

    $10.15 lower than Redding for the office setting.

  • Manhattan

    New York · 91037

    Office

    $215.62

    Facility

    Unavailable

    $14.07 higher than Redding for the office setting.

  • Alaska*

    Alaska · 91037

    Office

    $212.16

    Facility

    Unavailable

    $10.61 higher than Redding for the office setting.

  • Alabama

    Alabama · 91037

    Office

    $167.20

    Facility

    Unavailable

    $34.35 lower than Redding for the office setting.

  • Arkansas

    Arkansas · 91037

    Office

    $164.63

    Facility

    Unavailable

    $36.92 lower than Redding for the office setting.

  • Arizona

    Arizona · 91037

    Office

    $182.29

    Facility

    Unavailable

    $19.26 lower than Redding for the office setting.

  • Colorado

    Colorado · 91037

    Office

    $197.06

    Facility

    Unavailable

    $4.49 lower than Redding for the office setting.

  • Connecticut

    Connecticut · 91037

    Office

    $200.31

    Facility

    Unavailable

    $1.24 lower than Redding for the office setting.

  • Delaware

    Delaware · 91037

    Office

    $185.46

    Facility

    Unavailable

    $16.09 lower than Redding for the office setting.

  • Fort Lauderdale

    Florida · 91037

    Office

    $191.26

    Facility

    Unavailable

    $10.29 lower than Redding for the office setting.

  • Rest Of Florida

    Florida · 91037

    Office

    $181.81

    Facility

    Unavailable

    $19.74 lower than Redding for the office setting.

  • Atlanta

    Georgia · 91037

    Office

    $190.40

    Facility

    Unavailable

    $11.15 lower than Redding for the office setting.

  • Rest Of Georgia

    Georgia · 91037

    Office

    $171.27

    Facility

    Unavailable

    $30.28 lower than Redding for the office setting.

  • Hawaii, Guam

    Hawaii · 91037

    Office

    $207.40

    Facility

    Unavailable

    $5.85 higher than Redding for the office setting.

  • Iowa

    Iowa · 91037

    Office

    $172.94

    Facility

    Unavailable

    $28.61 lower than Redding for the office setting.

  • Idaho

    Idaho · 91037

    Office

    $173.88

    Facility

    Unavailable

    $27.67 lower than Redding for the office setting.

  • East St. Louis

    Illinois · 91037

    Office

    $177.49

    Facility

    Unavailable

    $24.06 lower than Redding for the office setting.

  • Rest Of Illinois

    Illinois · 91037

    Office

    $175.36

    Facility

    Unavailable

    $26.19 lower than Redding for the office setting.

  • Suburban Chicago

    Illinois · 91037

    Office

    $193.55

    Facility

    Unavailable

    $8.00 lower than Redding for the office setting.

  • Indiana

    Indiana · 91037

    Office

    $174.99

    Facility

    Unavailable

    $26.56 lower than Redding for the office setting.

  • Kansas

    Kansas · 91037

    Office

    $171.50

    Facility

    Unavailable

    $30.05 lower than Redding for the office setting.

  • Kentucky

    Kentucky · 91037

    Office

    $170.16

    Facility

    Unavailable

    $31.39 lower than Redding for the office setting.

  • New Orleans

    Louisiana · 91037

    Office

    $178.65

    Facility

    Unavailable

    $22.90 lower than Redding for the office setting.

  • Rest Of Louisiana

    Louisiana · 91037

    Office

    $169.65

    Facility

    Unavailable

    $31.90 lower than Redding for the office setting.

  • Metropolitan Boston

    Massachusetts · 91037

    Office

    $218.16

    Facility

    Unavailable

    $16.61 higher than Redding for the office setting.

  • Rest Of Massachusetts

    Massachusetts · 91037

    Office

    $195.54

    Facility

    Unavailable

    $6.01 lower than Redding for the office setting.

  • Baltimore/Surr. Cntys

    Maryland · 91037

    Office

    $199.63

    Facility

    Unavailable

    $1.92 lower than Redding for the office setting.

  • Rest Of Maryland

    Maryland · 91037

    Office

    $189.34

    Facility

    Unavailable

    $12.21 lower than Redding for the office setting.

  • Rest Of Maine

    Maine · 91037

    Office

    $174.23

    Facility

    Unavailable

    $27.32 lower than Redding for the office setting.

  • Southern Maine

    Maine · 91037

    Office

    $185.14

    Facility

    Unavailable

    $16.41 lower than Redding for the office setting.

  • Detroit

    Michigan · 91037

    Office

    $183.62

    Facility

    Unavailable

    $17.93 lower than Redding for the office setting.

  • Rest Of Michigan

    Michigan · 91037

    Office

    $174.34

    Facility

    Unavailable

    $27.21 lower than Redding for the office setting.

  • Minnesota

    Minnesota · 91037

    Office

    $190.18

    Facility

    Unavailable

    $11.37 lower than Redding for the office setting.

  • Metropolitan Kansas City

    Missouri · 91037

    Office

    $177.97

    Facility

    Unavailable

    $23.58 lower than Redding for the office setting.

  • Metropolitan St. Louis

    Missouri · 91037

    Office

    $180.02

    Facility

    Unavailable

    $21.53 lower than Redding for the office setting.

  • Rest Of Missouri

    Missouri · 91037

    Office

    $166.16

    Facility

    Unavailable

    $35.39 lower than Redding for the office setting.

  • Mississippi

    Mississippi · 91037

    Office

    $165.46

    Facility

    Unavailable

    $36.09 lower than Redding for the office setting.

  • Montana**

    Montana · 91037

    Office

    $187.37

    Facility

    Unavailable

    $14.18 lower than Redding for the office setting.

  • North Carolina

    North Carolina · 91037

    Office

    $176.26

    Facility

    Unavailable

    $25.29 lower than Redding for the office setting.

  • North Dakota**

    North Dakota · 91037

    Office

    $185.99

    Facility

    Unavailable

    $15.56 lower than Redding for the office setting.

  • Nebraska

    Nebraska · 91037

    Office

    $174.12

    Facility

    Unavailable

    $27.43 lower than Redding for the office setting.

  • New Hampshire

    New Hampshire · 91037

    Office

    $193.37

    Facility

    Unavailable

    $8.18 lower than Redding for the office setting.

  • Northern Nj

    New Jersey · 91037

    Office

    $214.07

    Facility

    Unavailable

    $12.52 higher than Redding for the office setting.

  • Rest Of New Jersey

    New Jersey · 91037

    Office

    $202.98

    Facility

    Unavailable

    $1.43 higher than Redding for the office setting.

  • New Mexico

    New Mexico · 91037

    Office

    $175.12

    Facility

    Unavailable

    $26.43 lower than Redding for the office setting.

  • Nevada**

    Nevada · 91037

    Office

    $187.14

    Facility

    Unavailable

    $14.41 lower than Redding for the office setting.

  • Nyc Suburbs/Long Island

    New York · 91037

    Office

    $220.39

    Facility

    Unavailable

    $18.84 higher than Redding for the office setting.

  • Poughkpsie/N Nyc Suburbs

    New York · 91037

    Office

    $203.86

    Facility

    Unavailable

    $2.31 higher than Redding for the office setting.

  • Queens

    New York · 91037

    Office

    $218.35

    Facility

    Unavailable

    $16.80 higher than Redding for the office setting.

  • Rest Of New York

    New York · 91037

    Office

    $179.02

    Facility

    Unavailable

    $22.53 lower than Redding for the office setting.

  • Ohio

    Ohio · 91037

    Office

    $174.06

    Facility

    Unavailable

    $27.49 lower than Redding for the office setting.

  • Oklahoma

    Oklahoma · 91037

    Office

    $170.45

    Facility

    Unavailable

    $31.10 lower than Redding for the office setting.

  • Portland

    Oregon · 91037

    Office

    $204.31

    Facility

    Unavailable

    $2.76 higher than Redding for the office setting.

  • Rest Of Oregon

    Oregon · 91037

    Office

    $186.07

    Facility

    Unavailable

    $15.48 lower than Redding for the office setting.

  • Metropolitan Philadelphia

    Pennsylvania · 91037

    Office

    $194.69

    Facility

    Unavailable

    $6.86 lower than Redding for the office setting.

  • Rest Of Pennsylvania

    Pennsylvania · 91037

    Office

    $174.68

    Facility

    Unavailable

    $26.87 lower than Redding for the office setting.

  • Puerto Rico

    Puerto Rico · 91037

    Office

    $189.03

    Facility

    Unavailable

    $12.52 lower than Redding for the office setting.

  • Rhode Island

    Rhode Island · 91037

    Office

    $192.79

    Facility

    Unavailable

    $8.76 lower than Redding for the office setting.

  • South Carolina

    South Carolina · 91037

    Office

    $175.38

    Facility

    Unavailable

    $26.17 lower than Redding for the office setting.

  • South Dakota**

    South Dakota · 91037

    Office

    $185.83

    Facility

    Unavailable

    $15.72 lower than Redding for the office setting.

  • Tennessee

    Tennessee · 91037

    Office

    $172.35

    Facility

    Unavailable

    $29.20 lower than Redding for the office setting.

  • Austin

    Texas · 91037

    Office

    $196.07

    Facility

    Unavailable

    $5.48 lower than Redding for the office setting.

  • Beaumont

    Texas · 91037

    Office

    $173.42

    Facility

    Unavailable

    $28.13 lower than Redding for the office setting.

  • Brazoria

    Texas · 91037

    Office

    $185.74

    Facility

    Unavailable

    $15.81 lower than Redding for the office setting.

  • Dallas

    Texas · 91037

    Office

    $186.72

    Facility

    Unavailable

    $14.83 lower than Redding for the office setting.

  • Fort Worth

    Texas · 91037

    Office

    $185.22

    Facility

    Unavailable

    $16.33 lower than Redding for the office setting.

  • Galveston

    Texas · 91037

    Office

    $186.16

    Facility

    Unavailable

    $15.39 lower than Redding for the office setting.

  • Houston

    Texas · 91037

    Office

    $187.44

    Facility

    Unavailable

    $14.11 lower than Redding for the office setting.

  • Rest Of Texas

    Texas · 91037

    Office

    $179.33

    Facility

    Unavailable

    $22.22 lower than Redding for the office setting.

  • Utah

    Utah · 91037

    Office

    $177.94

    Facility

    Unavailable

    $23.61 lower than Redding for the office setting.

  • Virginia

    Virginia · 91037

    Office

    $184.09

    Facility

    Unavailable

    $17.46 lower than Redding for the office setting.

  • Virgin Islands

    United States Virgin Islands · 91037

    Office

    $189.03

    Facility

    Unavailable

    $12.52 lower than Redding for the office setting.

  • Vermont

    Vermont · 91037

    Office

    $184.69

    Facility

    Unavailable

    $16.86 lower than Redding for the office setting.

  • Rest Of Washington

    Washington · 91037

    Office

    $195.36

    Facility

    Unavailable

    $6.19 lower than Redding for the office setting.

  • Seattle (King Cnty)

    Washington · 91037

    Office

    $223.34

    Facility

    Unavailable

    $21.79 higher than Redding for the office setting.

  • Wisconsin

    Wisconsin · 91037

    Office

    $179.32

    Facility

    Unavailable

    $22.23 lower than Redding for the office setting.

  • West Virginia

    West Virginia · 91037

    Office

    $168.30

    Facility

    Unavailable

    $33.25 lower than Redding for the office setting.

  • Wyoming**

    Wyoming · 91037

    Office

    $186.77

    Facility

    Unavailable

    $14.78 lower than Redding for the office setting.

See how rates vary across the country

91037 · Office / nonfacility · Non-QP. Choose a state to explore its payment localities. A range means the amount varies within that state.

MEWIVTNHMTNDMNMINYMARIWAIDWYSDIAILINOHPANJCTORNVUTCONEMOKYWVVAMDDECAAZNMKSOKARTNNCSCDCTXLAMSALGAFLAKHI

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.

$164.63

$229.55

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

View all state and territory rates as a table
State / territoryRate rangeLocalities
AK$212.161
AL$167.201
AR$164.631
AZ$182.291
CA$201.55–$257.5529
CO$197.061
CT$200.311
DC$216.651
DE$185.461
FL$181.81–$197.243
GA$171.27–$190.402
GU$207.401
HI$207.401
IA$172.941
ID$173.881
IL$175.36–$193.554
IN$174.991
KS$171.501
KY$170.161
LA$169.65–$178.652
MA$195.54–$218.162
MD$189.34–$216.653
ME$174.23–$185.142
MI$174.34–$183.622
MN$190.181
MO$166.16–$180.023
MS$165.461
MT$187.371
NC$176.261
ND$185.991
NE$174.121
NH$193.371
NJ$202.98–$214.072
NM$175.121
NV$187.141
NY$179.02–$220.395
OH$174.061
OK$170.451
OR$186.07–$204.312
PA$174.68–$194.692
PR$189.031
RI$192.791
SC$175.381
SD$185.831
TN$172.351
TX$173.42–$196.078
UT$177.941
VA$184.09–$216.652
VI$189.031
VT$184.691
WA$195.36–$223.342
WI$179.321
WV$168.301
WY$186.771

Explore 91037 on the national rate map →

Where does this rate apply?

Redding is a Medicare payment area. Our Census mapping connects it to 32 cities and communities in California, including the examples shown here.

Some communities span more than one payment area. Follow a city link to compare all of its mapped areas, or check the service-location ZIP above for an address-level starting point.

Browse all communities in California →

Use this rate

What is a percentage of Medicare worth?

Turn a percentage into dollars for 91037 in Redding. This uses the base rate on this page, so the locality and release stay consistent.

Reference amount per service

$221.71

$201.55 × 110% = $221.71

A contract may specify another Medicare year or additional adjustments. This is percentage arithmetic on the displayed base rate, not a claim adjudication.

Working with a whole code list?

Compare an offer across your annual code mix, including an older Medicare schedule or flat per-code rates.

Compare your contract offer →

How this local rate is calculated

Each RVU component is multiplied by its own geographic practice cost index (GPCI). The three adjusted components are added, then multiplied by the conversion factor. These are the inputs used for 91037 in Redding.

PPRRVU2026_Oct_nonQPP.csv

11,609

Code
91037
Physician work
0.95
Practice expense
4.59
Malpractice
0.07

GPCI2026.csv

19

Locality
Redding
Physician work
1.017
Practice expense
1.096
Malpractice
0.536
Office / nonfacility calculation for 91037 in Redding
ComponentRVULocality factorAdjusted
Physician work0.95× 1.0170.9661
Practice expense4.59× 1.0965.0306
Malpractice0.07× 0.5360.0375
Total RVUs6.0343
Conversion factor× 33.4009

Office / nonfacility rate, Redding$201.55

Open 91037 in the RVU calculator →

Explore RVUs, geographic factors and the full formula

Office / nonfacility

Office / nonfacility calculation inputs
ComponentRVULocal GPCI
Work0.951.017
Practice expense4.591.096
Malpractice0.070.536

(0.95 × 1.017 + 4.59 × 1.096 + 0.07 × 0.536) × $33.4009 = $201.55

The office and facility calculations use their respective practice-expense RVUs. The facility amount here is the physician fee, not a separate hospital or facility bill.

How this rate has changed

91037 · Office / nonfacility

$201.55

Effective 2026-10-01

The base rate is $30.06 higher than on 2025-10-01, moving from $171.49 to $201.55 (17.5%).

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

    $171.49changed to$201.55

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 0.97 changed to 0.95
    • Practice expense RVU 3.92 changed to 4.59
    • Malpractice RVU 0.06 changed to 0.07
    • Work GPCI 1.014 changed to 1.017
    • Practice expense GPCI 1.093 changed to 1.096
    • Malpractice GPCI 0.560 changed to 0.536

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    Earliest loaded release: $171.49

    Held through RVU25B, RVU25C, RVU25D.

Explore release dates and calculate this code in an earlier period →

Each row uses the accepted CMS release effective on that date and the same contractor and locality identifiers. Missing rates stay visible. Historical boundaries may differ; verify the service address for an older claim.

Inspect every release and its CMS source
Effective fromOffice / nonfacilityFacilityCMS release
2026-10-01$201.55Not available in this settingRVU26D
2026-07-01$201.55Not available in this settingRVU26C
2026-04-01$201.55Not available in this settingRVU26B
2026-01-01$201.55Not available in this settingRVU26A
2025-10-01$171.49Not available in this settingRVU25D
2025-07-01$171.49Not available in this settingRVU25C
2025-04-01$171.49Not available in this settingRVU25B
2025-01-01$171.49Not available in this settingRVU25A

91037 billing questions

How is 91037 distinguished from 91038?

Use 91037 for an impedance recording of one hour or less. Use 91038 when the recording exceeds one hour.

Can the interpretation and equipment portions be billed separately?

Yes. Modifier 26 identifies the professional interpretation, and modifier TC identifies the technical service; billing without either modifier represents the global service.

Is this the same test as esophageal manometry?

No. Impedance evaluates movement of liquid or gas and reflux events, while 91010 reports an esophageal motility study. Select the code that matches the study actually performed and documented.

Can modifier 50 be used?

No. Bilateral adjustment is inappropriate for this service.

What documentation supports reporting 91037?

Document the impedance study, its recording duration, measurements, analysis, interpretation, and report. The record should support a duration of one hour or less.

Are surgical team modifiers payable with this code?

Co-surgeon and team-surgery billing are not permitted. Assistant-at-surgery payment requires documentation of medical necessity.

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.

RVUs for 91037PPRRVU2026_Oct_nonQPP.csv, line 11,609 (RVU26D)
Geographic factors for ReddingGPCI2026.csv, line 19 (RVU26D)
Open CMS sourceHow this rate is calculatedBuild a fee sheet