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CPT code 43756: Duodenal aspiration, single specimen2026 Medicare rate & RVUs in Idaho

Reports diagnostic passage of a tube into the duodenum to aspirate one specimen of duodenal contents for laboratory evaluation.

CMS RVU26DEffective Oct 1, 2026One payment locality

In Idaho, Medicare pays $279.98 for 43756 in the office and $44.29 when it’s performed in a hospital or facility.

$279.98Office (non-facility)
$44.29Hospital or facility
−7.7%vs the national office rate ($303.28)

Check a contract rate as a % of Medicare · 43756 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 43756 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Idaho
  2. What 43756 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 43756 covers

A clinician passes an intubation tube into the duodenum and aspirates duodenal contents for diagnostic testing. The service may be performed when a specimen of duodenal fluid is needed for laboratory evaluation; it is distinct from collecting gastric contents or placing a tube for therapeutic use. The code is for one specimen, making specimen count a key distinction from its duodenal sibling code.

Report the service when documentation supports diagnostic duodenal intubation and aspiration of a single specimen. The record should identify the duodenal site, the diagnostic purpose, and the specimen obtained. CMS assigns a 0-day global period, so same-day preoperative and postoperative care is included. An assistant at surgery may be paid; co-surgeons and team surgery are not permitted. Modifier 50 is inappropriate for this service.

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 43756

Across 109 of 109 payment localities, the office rate for 43756 runs from $263.25 in Arkansas to $426.89 in San Benito County, CA. Idaho pays $279.98. The RVUs are the same everywhere; the geographic indexes change the dollars.

43756 in Idaho vs other payment areas
  1. Idaho · this page$279.98
  2. Los Angeles, CA · California$354.01+$74.03
  3. Washington, DC area · District of Columbia$354.01+$74.03
  4. Miami, FL · Florida$318.17+$38.19
  5. Chicago, IL · Illinois$307.86+$27.88
  6. Manhattan, NY · New York$350.95+$70.97
  7. Alaska · Alaska$332.69+$52.71

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

Every other payment area

43756 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama$267.78$43.62
ArkansasArkansas$263.25$43.18
ArizonaArizona$294.39$46.15
Bakersfield, CACalifornia$329.33$48.55
Chico, CACalifornia$329.11$48.33
El Centro, CACalifornia$329.12$48.34
Fresno, CACalifornia$329.11$48.33
Hanford, CACalifornia$329.11$48.33

43756 rates by state

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

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.

$263.25

$378.00

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

View every state and territory as a table
43756 office rate range by state
State / territoryOffice rate rangeLocalities
AK$332.691
AL$267.781
AR$263.251
AZ$294.391
CA$329.11–$426.8929
CO$320.731
CT$325.521
DC$354.011
DE$299.861
FL$292.32–$318.173
GA$273.93–$308.242
GU$340.091
HI$340.091
IA$278.421
ID$279.981
IL$280.59–$312.714
IN$281.941
KS$275.631
KY$272.461
LA$271.45–$287.322
MA$317.83–$357.572
MD$306.65–$354.013
ME$280.33–$299.932
MI$279.58–$295.232
MN$309.641
MO$265.15–$290.043
MS$264.321
MT$303.281
NC$283.951
ND$301.891
NE$280.581
NH$314.301
NJ$329.89–$349.162
NM$280.851
NV$303.171
NY$288.79–$359.035
OH$279.301
OK$273.241
OR$301.48–$333.712
PA$280.53–$315.492
PR$306.281
RI$312.611
SC$281.961
SD$301.731
TN$277.091
TX$278.28–$319.078
UT$286.491
VA$297.90–$354.012
VI$306.281
VT$299.371
WA$317.67–$366.732
WI$290.071
WV$268.151
WY$302.671

See 43756 in every payment locality

How the 43756 rate is calculated

Each of 43756’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 · 43756

RVUs × geographic indexes × conversion factor

Office or facility?

Work0.75

0.75 RVUs× 1.000 GPCI

Practice expense8.26

8.26 RVUs× 1.000 GPCI

Malpractice0.07

0.07 RVUs× 1.000 GPCI

Adjusted RVUs

9.0800

Conversion factor

$33.4009

Medicare rate

$303.28

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

5,287

Code
43756
Physician work
0.75
Practice expense
8.26
Malpractice
0.07

GPCI2026.csv

47

Locality
Idaho
Physician work
1.000
Practice expense
0.920
Malpractice
0.473
Office calculation for 43756 in Idaho
ComponentRVULocality factorAdjusted
Physician work0.75× 1.0000.7500
Practice expense8.26× 0.9207.5992
Malpractice0.07× 0.4730.0331
Total RVUs8.3823
Conversion factor× 33.4009

Office rate, Idaho$279.98

Office: (0.75 × 1 + 8.26 × 0.92 + 0.07 × 0.473) × $33.4009 = $279.98

Facility: (0.75 × 1 + 0.59 × 0.92 + 0.07 × 0.473) × $33.4009 = $44.29

Open 43756 in the RVU calculator

Payment rules and modifiers for 43756

The CMS indicators that decide how 43756 is paid alongside other services.

CMS payment indicators · 43756

Duodenal aspiration, single specimen

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)2Paid.
Co-surgeons (62)0Not permitted.
Team surgery (66)0Not permitted.
Professional/technical0Physician service: no professional/technical split.

What modifiers do to the payment

Modifier 80 · payment effect

With and without the modifier

43756 without 80 · national office

$303.28

Duodenal aspiration, single specimen

43756-80 · Assistant: 16%

$48.52

A physician assistant at surgery is paid 16% of the surgeon’s fee schedule amount.

When to use modifier 80

Codes related to 43756

Related codes aren’t interchangeable: bill the code that matches the service performed.

Codes related to 43756
CodeHow it relatesOffice range, Idaho
Same family
43757Duodenal aspiration, multiple specimensDiagnostic duodenal aspiration when multiple specimens are obtained.$376.40
Used instead
43754Gastric aspiration, single specimenDiagnostic aspiration of a gastric specimen rather than a duodenal specimen.$311.74
43755Gastric aspiration, multiple diagnostic specimensDiagnostic aspiration of multiple gastric specimens.$207.61
43753Gastric aspiration, therapeutic decompressionTherapeutic gastric intubation with aspiration, rather than diagnostic duodenal sampling.No office rate
43752Gastric tube placement, nasal or oral routeNasal or oral gastric tube placement without this diagnostic duodenal aspiration service.No office rate

How 43756 has changed in Idaho

43756 · Office / nonfacility

$279.98

Effective 2026-10-01

The base rate is $46.23 higher than on 2025-10-01, moving from $233.75 to $279.98 (19.8%).

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

    $233.75changed to$279.98

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 0.77 changed to 0.75
    • Practice expense RVU 7.07 changed to 8.26
    • Malpractice RVU 0.08 changed to 0.07
    • 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

    $250.68changed to$233.75

    • Conversion factor 33.2875 changed to 32.3465
    • Practice expense RVU 7.40 changed to 7.07
    • Malpractice RVU 0.09 changed to 0.08

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $246.59changed to$250.68

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $254.84changed to$246.59

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense RVU 7.51 changed to 7.40
    • Malpractice RVU 0.10 changed to 0.09
    • Practice expense GPCI 0.893 changed to 0.908
    • Malpractice GPCI 0.439 changed to 0.461

  5. January 1, 2023

    RVU23A

    $264.97changed to$254.84

    • Conversion factor 34.6062 changed to 33.8872
    • Practice expense RVU 7.81 changed to 7.51
    • Malpractice RVU 0.09 changed to 0.10
    • 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

    $257.68changed to$264.97

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 7.50 changed to 7.81

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $230.04changed to$257.68

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 6.25 changed to 7.50
    • 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

    $213.26changed to$230.04

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense RVU 5.65 changed to 6.25
    • Malpractice RVU 0.10 changed to 0.09
    • 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

    $193.22changed to$213.26

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 5.04 changed to 5.65

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $186.76changed to$193.22

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense RVU 4.87 changed to 5.04
    • 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

    $189.18changed to$186.76

    • Conversion factor 35.8043 changed to 35.8887
    • Practice expense RVU 4.97 changed to 4.87
    • 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

    $191.34changed to$189.18

    • Conversion factor 35.9335 changed to 35.8043
    • Practice expense RVU 5.01 changed to 4.97
    • Malpractice RVU 0.11 changed to 0.10

    Held through RVU16B, RVU16C, RVU16D.

  13. July 1, 2015

    RVU15C

    $190.39changed to$191.34

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  14. January 1, 2015

    RVU15A

    $194.20changed to$190.39

    • Conversion factor 35.8228 changed to 35.7547
    • Practice expense RVU 5.16 changed to 5.01
    • Malpractice RVU 0.05 changed to 0.11
    • Practice expense GPCI 0.896 changed to 0.898
    • Malpractice GPCI 0.556 changed to 0.508

    Held through RVU15B.

  15. January 1, 2014

    RVU14A

    $209.11changed to$194.20

    • Conversion factor 34.0230 changed to 35.8228
    • Practice expense RVU 5.98 changed to 5.16
    • Practice expense GPCI 0.894 changed to 0.896
    • Malpractice GPCI 0.603 changed to 0.556

    Held through RVU14B, RVU14C, RVU14D.

  16. January 1, 2013

    RVU13AR

    Earliest loaded release: $209.11

    Held through RVU13B, RVU13C, RVU13D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$279.98$44.29RVU26D
2026-07-01$279.98$44.29RVU26C
2026-04-01$279.98$44.29RVU26B
2026-01-01$279.98$44.29RVU26A
2025-10-01$233.75$45.48RVU25D
2025-07-01$233.75$45.48RVU25C
2025-04-01$233.75$45.48RVU25B
2025-01-01$233.75$45.48RVU25A
2024-10-01$250.68$46.96RVU24D
2024-07-01$250.68$46.96RVU24C
2024-04-01$250.68$46.96RVU24B
2024-03-09$250.68$46.96RVU24AR
2024-01-01$246.59$46.19RVU24A
2023-10-01$254.84$46.95RVU23D
2023-07-01$254.84$46.95RVU23C
2023-04-01$254.84$46.95RVU23B
2023-01-01$254.84$46.95RVU23A
2022-10-01$264.97$47.06RVU22D
2022-07-01$264.97$47.06RVU22C
2022-04-01$264.97$47.06RVU22B
2022-01-01$264.97$47.06RVU22A
2021-10-01$257.68$47.15RVU21D
2021-07-01$257.68$47.15RVU21C
2021-04-01$257.68$47.15RVU21B
2021-01-01$257.68$47.15RVU21A
2020-10-01$230.04$48.57RVU20D
2020-07-01$230.04$48.57RVU20C
2020-04-01$230.04$48.57RVU20B
2020-01-01$230.04$48.57RVU20A
2019-10-01$213.26$49.42RVU19D
2019-07-01$213.26$49.42RVU19C
2019-04-01$213.26$49.42RVU19B
2019-01-01$213.26$49.42RVU19A
2018-10-01$193.22$49.70RVU18D
2018-07-01$193.22$49.70RVU18C
2018-04-01$193.22$49.70RVU18B
2018-01-01$193.22$49.70RVU18AR1
2017-10-01$186.76$48.84RVU17D
2017-07-01$186.76$48.84RVU17C
2017-04-01$186.76$48.84RVU17B
2017-01-01$186.76$48.84RVU17A
2016-10-01$189.18$49.00RVU16D
2016-07-01$189.18$49.00RVU16C
2016-04-01$189.18$49.00RVU16B
2016-01-01$189.18$49.00RVU16A
2015-10-01$191.34$50.01RVU15D
2015-07-01$191.34$50.01RVU15C
2015-04-01$190.39$49.76RVU15B
2015-01-01$190.39$49.76RVU15A
2014-10-01$194.20$49.12RVU14D
2014-07-01$194.20$49.12RVU14C
2014-04-01$194.20$49.12RVU14B
2014-01-01$194.20$49.12RVU14A
2013-10-01$209.11$49.43RVU13D
2013-07-01$209.11$49.43RVU13C
2013-04-01$209.11$49.43RVU13B
2013-01-01$209.11$49.43RVU13AR

Price 43756 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

43756 billing questions

When should 43756 be chosen over 43757?

Use 43756 for aspiration of one diagnostic duodenal specimen. The related 43757 code is for multiple specimens.

How does this differ from gastric intubation codes?

43756 involves diagnostic intubation and aspiration in the duodenum. Codes 43754 and 43755 concern gastric specimens, with the specimen count distinguishing those codes.

Can tube placement be billed separately?

The intubation and aspiration are part of this diagnostic service. Do not separately report a tube-placement service for the same intubation.

What documentation supports reporting 43756?

Document that the tube reached the duodenum, that aspiration was performed for diagnostic evaluation, and that one specimen was obtained.

Can modifier 50 be used, or can co-surgeons be reported?

Modifier 50 is inappropriate for this service. CMS does not permit co-surgeons or team surgery; an assistant at surgery may be paid.

What care is included in the global period?

The service has a 0-day global period, which includes same-day preoperative and postoperative care.

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 43756PPRRVU2026_Oct_nonQPP.csv, line 5,287 (RVU26D)
Geographic factors for IdahoGPCI2026.csv, line 47 (RVU26D)

Open CMS sourceHow we calculate rates

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