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HCPCS code G0105: Screening colonoscopy, high-risk individual2026 Medicare rate & RVUs in Iowa

Report G0105 for a screening colonoscopy in a Medicare beneficiary who meets high-risk criteria, such as a relevant personal or family history.

CMS RVU26DEffective Oct 1, 2026One payment locality410.5K Medicare services in 2024

In Iowa, Medicare pays $347.89 for G0105 in the office and $152.60 when it’s performed in a hospital or facility.

$347.89Office (non-facility)
$152.60Hospital or facility
−8.0%vs the national office rate ($378.10)

Check a contract rate as a % of Medicare · G0105 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 G0105 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Iowa
  2. What G0105 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 G0105 covers

G0105 represents a colonoscopic examination performed to screen an asymptomatic beneficiary who qualifies as high risk for colorectal cancer. A gastroenterologist, colorectal surgeon, or other qualified endoscopist examines the colon, typically in an ambulatory endoscopy center or hospital outpatient department. High-risk circumstances can include a personal history of colorectal cancer or adenomatous polyps, inflammatory bowel disease, or colorectal cancer in a first-degree relative. The indication should support screening rather than evaluation of current symptoms.

Document the screening purpose, the risk factor supporting high-risk status, and the endoscopy findings and extent. CMS assigns a 0-day global period, so same-day preoperative and postoperative care is included. Modifier 53 is separately priced for a discontinued procedure. When multiple procedures are performed in one session, the highest-valued procedure is paid in full and other procedures are subject to the standard 50% reduction. Bilateral adjustment is inappropriate. Medicare does not pay an assistant at surgery, and co-surgeon and team-surgery billing 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 Iowa compares for G0105

Across 109 of 109 payment localities, the office rate for G0105 runs from $335.05 in Arkansas to $497.55 in San Benito County, CA. Iowa pays $347.89. The RVUs are the same everywhere; the geographic indexes change the dollars.

G0105 in Iowa vs other payment areas
  1. Iowa · this page$347.89
  2. Los Angeles, CA · California$425.10+$77.21
  3. Washington, DC area · District of Columbia$431.34+$83.45
  4. Miami, FL · Florida$409.62+$61.73
  5. Chicago, IL · Illinois$397.87+$49.98
  6. Manhattan, NY · New York$434.75+$86.86
  7. Alaska · Alaska$441.84+$93.95

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

Every other payment area

G0105 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama$339.88$153.13
ArkansasArkansas$335.05$151.71
ArizonaArizona$368.12$161.31
Bakersfield, CACalifornia$399.55$165.63
Chico, CACalifornia$398.34$164.41
El Centro, CACalifornia$398.40$164.48
Fresno, CACalifornia$398.34$164.41
Hanford, CACalifornia$398.34$164.41

G0105 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.

$335.05

$447.95

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

View every state and territory as a table
G0105 office rate range by state
State / territoryOffice rate rangeLocalities
AK$441.841
AL$339.881
AR$335.051
AZ$368.121
CA$398.34–$497.5529
CO$392.901
CT$402.981
DC$431.341
DE$374.151
FL$373.63–$409.623
GA$352.84–$385.302
GU$407.701
HI$407.701
IA$347.891
ID$350.231
IL$363.35–$397.874
IN$352.211
KS$346.521
KY$348.281
LA$347.83–$364.732
MA$390.70–$431.042
MD$381.14–$431.343
ME$352.27–$370.722
MI$357.40–$378.462
MN$375.941
MO$342.11–$365.733
MS$338.641
MT$378.071
NC$355.861
ND$369.961
NE$349.701
NH$386.971
NJ$407.43–$427.032
NM$359.421
NV$376.071
NY$361.12–$445.435
OH$355.751
OK$347.421
OR$373.00–$404.952
PA$356.17–$393.242
PR$380.731
RI$387.161
SC$356.421
SD$369.011
TN$348.261
TX$353.89–$391.728
UT$361.211
VA$369.68–$431.342
VI$380.731
VT$368.751
WA$389.89–$439.512
WI$357.781
WV$350.181
WY$374.541

See G0105 in every payment locality

How the G0105 rate is calculated

Each of G0105’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 · G0105

RVUs × geographic indexes × conversion factor

Office or facility?

Work3.18

3.18 RVUs× 1.000 GPCI

Practice expense7.73

7.73 RVUs× 1.000 GPCI

Malpractice0.41

0.41 RVUs× 1.000 GPCI

Adjusted RVUs

11.3200

Conversion factor

$33.4009

Medicare rate

$378.10

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

The exact Iowa inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

15,087

Code
G0105
Physician work
3.18
Practice expense
7.73
Malpractice
0.41

GPCI2026.csv

53

Locality
Iowa
Physician work
1.000
Practice expense
0.915
Malpractice
0.397
Office calculation for G0105 in Iowa
ComponentRVULocality factorAdjusted
Physician work3.18× 1.0003.1800
Practice expense7.73× 0.9157.0730
Malpractice0.41× 0.3970.1628
Total RVUs10.4157
Conversion factor× 33.4009

Office rate, Iowa$347.89

Office: (3.18 × 1 + 7.73 × 0.915 + 0.41 × 0.397) × $33.4009 = $347.89

Facility: (3.18 × 1 + 1.34 × 0.915 + 0.41 × 0.397) × $33.4009 = $152.60

Open G0105 in the RVU calculator

Payment rules and modifiers for G0105

The CMS indicators that decide how G0105 is paid alongside other services.

CMS payment indicators · G0105

Screening colonoscopy, high-risk individual

RuleCMS valueWhat it means
Global period000Same-day global: pre- and post-op care on the day of the procedure is included.
Multiple procedures2Standard reduction: highest-valued procedure at 100%, others at 50%.
Bilateral (modifier 50)0The 150% bilateral adjustment doesn’t apply.
Assistant at surgery (80/81/82/AS)1Not paid (statutory restriction).
Co-surgeons (62)0Not permitted.
Team surgery (66)0Not permitted.
Professional/technical0Physician service: no professional/technical split.

What modifiers do to the payment

Modifier 51 · payment effect

With and without the modifier

G0105 without 51 · national office

$378.10

Screening colonoscopy, high-risk individual

G0105-51 · Second procedure: 50%

$189.05

When this isn’t the highest-valued procedure in the session, Medicare pays 50% of its fee schedule amount (the highest is paid at 100%).

When to use modifier 51

Codes related to G0105

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

Codes related to G0105
CodeHow it relatesOffice range, Iowa
Used instead
G0121Screening colonoscopy, not high riskScreening colonoscopy for an individual who does not meet high-risk criteria.$348.03
G0104Flexible sigmoidoscopy, colorectal cancer screeningColorectal cancer screening performed by flexible sigmoidoscopy.$196.94
45378Colonoscopy, diagnostic, no tissue removalColonoscopy code used for a diagnostic examination rather than high-risk screening.$347.89
Often billed with
00812Colonoscopy anesthesia, screening colonoscopyAnesthesia service commonly reported for a screening colonoscopy encounter.No office rate

How G0105 has changed in Iowa

G0105 · Office / nonfacility

$347.89

Effective 2026-10-01

The base rate is $45.90 higher than on 2025-10-01, moving from $301.99 to $347.89 (15.2%).

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

    $301.99changed to$347.89

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 3.26 changed to 3.18
    • Practice expense RVU 6.44 changed to 7.73
    • Malpractice RVU 0.43 changed to 0.41
    • Practice expense GPCI 0.913 changed to 0.915
    • Malpractice GPCI 0.457 changed to 0.397

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    $312.76changed to$301.99

    • Conversion factor 33.2875 changed to 32.3465
    • Practice expense RVU 6.51 changed to 6.44
    • Malpractice RVU 0.42 changed to 0.43

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $307.65changed to$312.76

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $317.50changed to$307.65

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense GPCI 0.910 changed to 0.913
    • Malpractice GPCI 0.441 changed to 0.457

  5. January 1, 2023

    RVU23A

    $327.74changed to$317.50

    • Conversion factor 34.6062 changed to 33.8872
    • Practice expense RVU 6.66 changed to 6.51
    • Malpractice RVU 0.40 changed to 0.42
    • Practice expense GPCI 0.907 changed to 0.910
    • Malpractice GPCI 0.425 changed to 0.441

    Held through RVU23B, RVU23C, RVU23D.

  6. January 1, 2022

    RVU22A

    $327.44changed to$327.74

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 6.56 changed to 6.66
    • Malpractice RVU 0.41 changed to 0.40

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $311.99changed to$327.44

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 5.75 changed to 6.56
    • Malpractice RVU 0.40 changed to 0.41
    • Malpractice GPCI 0.424 changed to 0.425

    Held through RVU21B, RVU21C, RVU21D.

  8. January 1, 2020

    RVU20A

    $302.82changed to$311.99

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense RVU 5.46 changed to 5.75
    • Malpractice RVU 0.45 changed to 0.40
    • Malpractice GPCI 0.423 changed to 0.424

    Held through RVU20B, RVU20C, RVU20D.

  9. January 1, 2019

    RVU19A

    $297.09changed to$302.82

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 5.29 changed to 5.46
    • Malpractice RVU 0.46 changed to 0.45

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $294.67changed to$297.09

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense RVU 5.26 changed to 5.29
    • Malpractice RVU 0.45 changed to 0.46
    • Practice expense GPCI 0.902 changed to 0.907
    • Malpractice GPCI 0.458 changed to 0.423

    Held through RVU18B, RVU18C, RVU18D.

  11. January 1, 2017

    RVU17A

    $350.92changed to$294.67

    • Conversion factor 35.8043 changed to 35.8887
    • Work RVU 3.36 changed to 3.26
    • Practice expense RVU 6.93 changed to 5.26
    • Malpractice RVU 0.47 changed to 0.45
    • Practice expense GPCI 0.896 changed to 0.902
    • Malpractice GPCI 0.493 changed to 0.458

    Held through RVU17B, RVU17C, RVU17D.

  12. January 1, 2016

    RVU16A

    $361.77changed to$350.92

    • Conversion factor 35.9335 changed to 35.8043
    • Work RVU 3.69 changed to 3.36
    • Practice expense RVU 6.81 changed to 6.93
    • Malpractice RVU 0.56 changed to 0.47

    Held through RVU16B, RVU16C, RVU16D.

  13. October 1, 2015

    RVU15D

    $349.91changed to$361.77

    • Work RVU 3.36 changed to 3.69

  14. July 1, 2015

    RVU15C

    $348.17changed to$349.91

    • Conversion factor 35.7547 changed to 35.9335

  15. January 1, 2015

    RVU15A

    $358.36changed to$348.17

    • Conversion factor 35.8228 changed to 35.7547
    • Work RVU 3.69 changed to 3.36
    • Practice expense RVU 6.78 changed to 6.81
    • Practice expense GPCI 0.892 changed to 0.896
    • Malpractice GPCI 0.475 changed to 0.493

    Held through RVU15B.

  16. January 1, 2014

    RVU14A

    $369.79changed to$358.36

    • Conversion factor 34.0230 changed to 35.8228
    • Practice expense RVU 7.79 changed to 6.78
    • Malpractice RVU 0.59 changed to 0.56
    • Practice expense GPCI 0.887 changed to 0.892
    • Malpractice GPCI 0.456 changed to 0.475

    Held through RVU14B, RVU14C, RVU14D.

  17. January 1, 2013

    RVU13AR

    Earliest loaded release: $369.79

    Held through RVU13B, RVU13C, RVU13D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$347.89$152.60RVU26D
2026-07-01$347.89$152.60RVU26C
2026-04-01$347.89$152.60RVU26B
2026-01-01$347.89$152.60RVU26A
2025-10-01$301.99$164.67RVU25D
2025-07-01$301.99$164.67RVU25C
2025-04-01$301.99$164.67RVU25B
2025-01-01$301.99$164.67RVU25A
2024-10-01$312.76$168.70RVU24D
2024-07-01$312.76$168.70RVU24C
2024-04-01$312.76$168.70RVU24B
2024-03-09$312.76$168.70RVU24AR
2024-01-01$307.65$165.95RVU24A
2023-10-01$317.50$170.41RVU23D
2023-07-01$317.50$170.41RVU23C
2023-04-01$317.50$170.41RVU23B
2023-01-01$317.50$170.41RVU23A
2022-10-01$327.74$173.31RVU22D
2022-07-01$327.74$173.31RVU22C
2022-04-01$327.74$173.31RVU22B
2022-01-01$327.74$173.31RVU22A
2021-10-01$327.44$174.58RVU21D
2021-07-01$327.44$174.58RVU21C
2021-04-01$327.44$174.58RVU21B
2021-01-01$327.44$174.58RVU21A
2020-10-01$311.99$178.76RVU20D
2020-07-01$311.99$178.76RVU20C
2020-04-01$311.99$178.76RVU20B
2020-01-01$311.99$178.76RVU20A
2019-10-01$302.82$179.59RVU19D
2019-07-01$302.82$179.59RVU19C
2019-04-01$302.82$179.59RVU19B
2019-01-01$302.82$179.59RVU19A
2018-10-01$297.09$180.20RVU18D
2018-07-01$297.09$180.20RVU18C
2018-04-01$297.09$180.20RVU18B
2018-01-01$297.09$180.20RVU18AR1
2017-10-01$294.67$179.75RVU17D
2017-07-01$294.67$179.75RVU17C
2017-04-01$294.67$179.75RVU17B
2017-01-01$294.67$179.75RVU17A
2016-10-01$350.92$184.42RVU16D
2016-07-01$350.92$184.42RVU16C
2016-04-01$350.92$184.42RVU16B
2016-01-01$350.92$184.42RVU16A
2015-10-01$361.77$204.98RVU15D
2015-07-01$349.91$193.12RVU15C
2015-04-01$348.17$192.16RVU15B
2015-01-01$348.17$192.16RVU15A
2014-10-01$358.36$203.71RVU14D
2014-07-01$358.36$203.71RVU14C
2014-04-01$358.36$203.71RVU14B
2014-01-01$358.36$203.71RVU14A
2013-10-01$369.79$201.09RVU13D
2013-07-01$369.79$201.09RVU13C
2013-04-01$369.79$201.09RVU13B
2013-01-01$369.79$201.09RVU13AR

Price G0105 for an earlier date of service

Where the Iowa rate applies

Iowa is a Medicare payment area, not a city. Our Census mapping connects it to 1026 cities and communities in Iowa. Some span more than one payment area; confirm with the service ZIP.

  • Ackley
  • Ackworth
  • Adair
  • Adel
  • Afton
  • Agency
  • Ainsworth
  • Akron

Browse all communities in Iowa

G0105 billing questions

How is G0105 different from G0121?

G0105 is for a screening colonoscopy when the beneficiary meets Medicare high-risk criteria. G0121 is the screening colonoscopy code for an individual who is not high risk.

When should G0104 be considered instead?

G0104 describes colorectal cancer screening by flexible sigmoidoscopy. G0105 is for screening by colonoscopy in a high-risk individual.

What documentation supports high-risk screening?

Record that the service was for screening and identify the history or other qualifying risk factor supporting high-risk status. The procedure report should document the examination and findings.

What does modifier 53 mean for G0105?

Modifier 53 identifies a procedure that was discontinued. CMS separately prices this modifier for G0105.

How does the multiple-procedure rule affect G0105?

When multiple procedures are performed in the same session, the highest-valued procedure is paid in full and the others are subject to the standard 50% reduction.

Can an assistant surgeon or co-surgeon be billed?

Medicare does not pay an assistant at surgery for G0105. Co-surgeon and team-surgery billing are not permitted.

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 G0105PPRRVU2026_Oct_nonQPP.csv, line 15,087 (RVU26D)
Geographic factors for IowaGPCI2026.csv, line 53 (RVU26D)

Open CMS sourceHow we calculate rates

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