CPT code 92020: Gonioscopy2026 Medicare rate & RVUs in Montana
Gonioscopy uses a contact lens to examine the anterior chamber angle when assessing glaucoma, suspected angle closure, or injury to the drainage angle.
In Montana, Medicare pays $26.72 for 92020 in the office and $16.37 when it’s performed in a hospital or facility.
Check a contract rate as a % of Medicare · 92020 nationwide
Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.
On this page 11 sections
What 92020 covers
Gonioscopy lets the examiner see the drainage angle where the iris meets the cornea, which cannot be viewed directly during a routine slit-lamp examination. An ophthalmologist or optometrist typically places a goniolens on the eye after topical anesthesia and assesses angle width and features such as trabecular pigmentation, peripheral anterior synechiae, neovascularization, or angle recession. Common indications include glaucoma evaluation, narrow angles, pigment dispersion, and blunt ocular trauma. The examination is often performed in an office or outpatient eye clinic.
Report gonioscopy in addition to an eye exam or E/M visit when a diagnostic angle examination is medically necessary and performed. Documentation should identify the indication, eye or eyes examined, angle findings, and clinical interpretation; an angle grade and findings by quadrant can add useful detail. CMS prices 92020 as bilateral, so report one unit for examination of one or both eyes; modifier 50 does not increase payment. Viewing the angle solely to guide laser trabeculoplasty is part of that procedure, not a separate diagnostic gonioscopy.
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 Montana compares for 92020
Across 109 of 109 payment localities, the office rate for 92020 runs from $24.53 in Arkansas to $34.24 in San Benito County, CA. Montana pays $26.72. The RVUs are the same everywhere; the geographic indexes change the dollars.
- Montana · this page$26.72
- Los Angeles, CA · California$29.73+$3.01
- Washington, DC area · District of Columbia$29.96+$3.24
- Miami, FL · Florida$27.82+$1.10
- Chicago, IL · Illinois$27.31+$0.59
- Manhattan, NY · New York$30.01+$3.29
- Alaska · Alaska$33.52+$6.80
Other areas in Montana first, then benchmark localities. Bars start at $0.
Every other payment area
| Payment locality | Office | Facility |
|---|---|---|
| AlabamaAlabama | $24.78 | $15.72 |
| ArkansasArkansas | $24.53 | $15.64 |
| ArizonaArizona | $26.23 | $16.19 |
| Bakersfield, CACalifornia | $28.20 | $16.85 |
| Chico, CACalifornia | $28.15 | $16.80 |
| El Centro, CACalifornia | $28.15 | $16.80 |
| Fresno, CACalifornia | $28.15 | $16.80 |
| Hanford, CACalifornia | $28.15 | $16.80 |
| Madera, CACalifornia | $28.15 | $16.80 |
| Merced, CACalifornia | $28.15 | $16.80 |
| Modesto, CACalifornia | $28.15 | $16.80 |
| Napa, CACalifornia | $31.88 | $18.23 |
| Oxnard, CACalifornia | $29.55 | $17.31 |
| Redding, CACalifornia | $28.15 | $16.80 |
| Rest of CaliforniaCalifornia | $28.15 | $16.80 |
| Riverside, CACalifornia | $28.27 | $16.92 |
| Sacramento, CACalifornia | $29.34 | $17.30 |
| Salinas, CACalifornia | $29.22 | $17.22 |
| San Diego, CACalifornia | $29.74 | $17.36 |
| Marin County, CACalifornia | $33.57 | $18.97 |
| San Francisco, CACalifornia | $33.56 | $18.96 |
| San Benito County, CACalifornia | $34.24 | $19.31 |
| Santa Clara County, CACalifornia | $34.19 | $19.26 |
| San Luis Obispo, CACalifornia | $28.77 | $16.97 |
| Santa Cruz, CACalifornia | $29.91 | $17.33 |
| Santa Maria, CACalifornia | $29.29 | $17.21 |
| Santa Rosa, CACalifornia | $30.20 | $17.49 |
| Stockton, CACalifornia | $28.15 | $16.80 |
| Vallejo, CACalifornia | $31.86 | $18.22 |
| Visalia, CACalifornia | $28.15 | $16.80 |
| Yuba City, CACalifornia | $28.15 | $16.80 |
| ColoradoColorado | $27.71 | $16.69 |
| ConnecticutConnecticut | $28.14 | $16.99 |
| DelawareDelaware | $26.57 | $16.34 |
| Fort Lauderdale, FLFlorida | $27.18 | $16.69 |
| Rest of FloridaFlorida | $26.26 | $16.36 |
| Atlanta, GAGeorgia | $27.05 | $16.53 |
| Rest of GeorgiaGeorgia | $25.23 | $16.00 |
| Hawaii, Guam, HIHawaii | $28.55 | $16.77 |
| IowaIowa | $25.30 | $15.82 |
| IdahoIdaho | $25.40 | $15.87 |
| East St. Louis, ILIllinois | $25.91 | $16.38 |
| Rest of IllinoisIllinois | $25.66 | $16.21 |
| Suburban Chicago, ILIllinois | $27.45 | $16.82 |
| IndianaIndiana | $25.50 | $15.90 |
| KansasKansas | $25.18 | $15.82 |
| KentuckyKentucky | $25.10 | $15.89 |
| New Orleans, LALouisiana | $25.92 | $16.18 |
| Rest of LouisianaLouisiana | $25.06 | $15.89 |
| Metropolitan Boston, MAMassachusetts | $29.96 | $17.60 |
| Rest of MassachusettsMassachusetts | $27.61 | $16.70 |
| Baltimore area, MDMaryland | $28.04 | $16.93 |
| Rest of MarylandMaryland | $26.99 | $16.51 |
| Rest of MaineMaine | $25.45 | $15.92 |
| Southern Maine, MEMaine | $26.47 | $16.21 |
| Detroit, MIMichigan | $26.45 | $16.46 |
| Rest of MichiganMichigan | $25.51 | $16.06 |
| MinnesotaMinnesota | $26.90 | $16.25 |
| Metropolitan Kansas City, MOMissouri | $25.84 | $16.11 |
| Metropolitan St. Louis, MOMissouri | $26.03 | $16.17 |
| Rest of MissouriMissouri | $24.73 | $15.80 |
| MississippiMississippi | $24.64 | $15.72 |
| North CarolinaNorth Carolina | $25.64 | $15.98 |
| North DakotaNorth Dakota | $26.52 | $16.17 |
| NebraskaNebraska | $25.41 | $15.85 |
| New HampshireNew Hampshire | $27.27 | $16.49 |
| Northern New JerseyNew Jersey | $29.80 | $17.79 |
| Rest of New JerseyNew Jersey | $28.56 | $17.25 |
| New MexicoNew Mexico | $25.60 | $16.10 |
| NevadaNevada | $26.68 | $16.31 |
| NYC suburbs and Long Island, NYNew York | $30.49 | $18.18 |
| Poughkeepsie and northern NYC suburbs, NYNew York | $28.70 | $17.36 |
| Queens, NYNew York | $30.25 | $18.01 |
| Rest of New YorkNew York | $25.90 | $16.07 |
| OhioOhio | $25.47 | $16.02 |
| OklahomaOklahoma | $25.11 | $15.86 |
| Portland, OROregon | $28.42 | $16.92 |
| Rest of OregonOregon | $26.56 | $16.25 |
| Metropolitan Philadelphia, PAPennsylvania | $27.59 | $16.81 |
| Rest of PennsylvaniaPennsylvania | $25.52 | $16.02 |
| Puerto RicoPuerto Rico | $26.87 | $16.41 |
| Rhode IslandRhode Island | $27.39 | $16.69 |
| South CarolinaSouth Carolina | $25.58 | $16.01 |
| South DakotaSouth Dakota | $26.50 | $16.14 |
| TennesseeTennessee | $25.26 | $15.85 |
| Austin, TXTexas | $27.54 | $16.58 |
| Beaumont, TXTexas | $25.40 | $15.98 |
| Brazoria, TXTexas | $26.61 | $16.35 |
| Dallas, TXTexas | $26.72 | $16.41 |
| Fort Worth, TXTexas | $26.58 | $16.38 |
| Galveston, TXTexas | $26.66 | $16.38 |
| Houston, TXTexas | $26.84 | $16.56 |
| Rest of TexasTexas | $25.96 | $16.13 |
| UtahUtah | $25.82 | $16.09 |
| VirginiaVirginia | $26.38 | $16.20 |
| Virgin Islands, VIUnited States Virgin Islands | $26.87 | $16.41 |
| VermontVermont | $26.41 | $16.16 |
| Rest of WashingtonWashington | $27.56 | $16.66 |
| King County, WAWashington | $30.52 | $17.82 |
| WisconsinWisconsin | $25.89 | $15.97 |
| West VirginiaWest Virginia | $24.98 | $15.99 |
| WyomingWyoming | $26.63 | $16.28 |
92020 rates by state
Office rate range in each state. Select a state to see its payment localities.
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.
$24.53
$33.52
Color shows the midpoint of each state’s locality range.
View every state and territory as a table
| State / territory | Office rate range | Localities |
|---|---|---|
| AK | $33.52 | 1 |
| AL | $24.78 | 1 |
| AR | $24.53 | 1 |
| AZ | $26.23 | 1 |
| CA | $28.15–$34.24 | 29 |
| CO | $27.71 | 1 |
| CT | $28.14 | 1 |
| DC | $29.96 | 1 |
| DE | $26.57 | 1 |
| FL | $26.26–$27.82 | 3 |
| GA | $25.23–$27.05 | 2 |
| GU | $28.55 | 1 |
| HI | $28.55 | 1 |
| IA | $25.30 | 1 |
| ID | $25.40 | 1 |
| IL | $25.66–$27.45 | 4 |
| IN | $25.50 | 1 |
| KS | $25.18 | 1 |
| KY | $25.10 | 1 |
| LA | $25.06–$25.92 | 2 |
| MA | $27.61–$29.96 | 2 |
| MD | $26.99–$29.96 | 3 |
| ME | $25.45–$26.47 | 2 |
| MI | $25.51–$26.45 | 2 |
| MN | $26.90 | 1 |
| MO | $24.73–$26.03 | 3 |
| MS | $24.64 | 1 |
| MT | $26.72 | 1 |
| NC | $25.64 | 1 |
| ND | $26.52 | 1 |
| NE | $25.41 | 1 |
| NH | $27.27 | 1 |
| NJ | $28.56–$29.80 | 2 |
| NM | $25.60 | 1 |
| NV | $26.68 | 1 |
| NY | $25.90–$30.49 | 5 |
| OH | $25.47 | 1 |
| OK | $25.11 | 1 |
| OR | $26.56–$28.42 | 2 |
| PA | $25.52–$27.59 | 2 |
| PR | $26.87 | 1 |
| RI | $27.39 | 1 |
| SC | $25.58 | 1 |
| SD | $26.50 | 1 |
| TN | $25.26 | 1 |
| TX | $25.40–$27.54 | 8 |
| UT | $25.82 | 1 |
| VA | $26.38–$29.96 | 2 |
| VI | $26.87 | 1 |
| VT | $26.41 | 1 |
| WA | $27.56–$30.52 | 2 |
| WI | $25.89 | 1 |
| WV | $24.98 | 1 |
| WY | $26.63 | 1 |
How the 92020 rate is calculated
Each of 92020’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 · 92020
RVUs × geographic indexes × conversion factor
Work0.36
0.36 RVUs× 1.000 GPCI
Practice expense0.43
0.43 RVUs× 1.000 GPCI
Malpractice0.01
0.01 RVUs× 1.000 GPCI
Adjusted RVUs
0.8000
Conversion factor
$33.4009
Medicare rate
$26.72
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
The exact Montana inputs and CMS source lines
PPRRVU2026_Oct_nonQPP.csv
11,666
- Code
- 92020
- Physician work
- 0.36
- Practice expense
- 0.43
- Malpractice
- 0.01
GPCI2026.csv
71
- Locality
- Montana
- Physician work
- 1.000
- Practice expense
- 1.000
- Malpractice
- 0.998
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 0.36 | × 1.000 | 0.3600 |
| Practice expense | 0.43 | × 1.000 | 0.4300 |
| Malpractice | 0.01 | × 0.998 | 0.0100 |
| Total RVUs | 0.8000 | ||
| Conversion factor | × 33.4009 | ||
Office rate, Montana$26.72
Office: (0.36 × 1 + 0.43 × 1 + 0.01 × 0.998) × $33.4009 = $26.72
Facility: (0.36 × 1 + 0.12 × 1 + 0.01 × 0.998) × $33.4009 = $16.37
Payment rules and modifiers for 92020
The CMS indicators that decide how 92020 is paid alongside other services.
CMS payment indicators · 92020
Gonioscopy
| Rule | CMS value | What it means |
|---|---|---|
| Global period | XXX | The global surgery concept doesn’t apply. |
| Multiple procedures | 0 | No multiple-procedure reduction. |
| Bilateral (modifier 50) | 2 | Already bilateral by definition: paid once at 100%. |
| Assistant at surgery (80/81/82/AS) | 0 | Not paid without supporting documentation. |
| Co-surgeons (62) | 0 | Not permitted. |
| Team surgery (66) | 0 | Not permitted. |
| Professional/technical | 0 | Physician service: no professional/technical split. |
How 92020 has changed in Montana
92020 · Office / nonfacility
$26.72
Effective 2026-10-01
The base rate is $0.53 higher than on 2025-10-01, moving from $26.19 to $26.72 (2.0%).
It is unchanged from the immediately preceding available release, effective 2026-07-01.
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
January 1, 2026
RVU26A
$26.19changed to$26.72
- Conversion factor 32.3465 changed to 33.4009
- Work RVU 0.37 changed to 0.36
- Malpractice GPCI 0.978 changed to 0.998
Held through RVU26B, RVU26C, RVU26D.
January 1, 2025
RVU25A
$27.29changed to$26.19
- Conversion factor 33.2875 changed to 32.3465
- Practice expense RVU 0.44 changed to 0.43
Held through RVU25B, RVU25C, RVU25D.
March 9, 2024
RVU24AR
$26.84changed to$27.29
- Conversion factor 32.7442 changed to 33.2875
Held through RVU24B, RVU24C, RVU24D.
January 1, 2024
RVU24A
$27.78changed to$26.84
- Conversion factor 33.8872 changed to 32.7442
January 1, 2023
RVU23A
$28.37changed to$27.78
- Conversion factor 34.6062 changed to 33.8872
- Malpractice GPCI 0.977 changed to 0.978
Held through RVU23B, RVU23C, RVU23D.
January 1, 2022
RVU22A
$28.26changed to$28.37
- Conversion factor 34.8931 changed to 34.6062
- Practice expense RVU 0.43 changed to 0.44
Held through RVU22B, RVU22C, RVU22D.
January 1, 2021
RVU21A
$28.26changed to$28.26
- Conversion factor 36.0896 changed to 34.8931
- Practice expense RVU 0.40 changed to 0.43
- Malpractice GPCI 1.304 changed to 0.977
Held through RVU21B, RVU21C, RVU21D.
January 1, 2020
RVU20A
$28.34changed to$28.26
- Conversion factor 36.0391 changed to 36.0896
- Malpractice GPCI 1.631 changed to 1.304
Held through RVU20B, RVU20C, RVU20D.
January 1, 2019
RVU19A
$27.59changed to$28.34
- Conversion factor 35.9996 changed to 36.0391
- Practice expense RVU 0.38 changed to 0.40
Held through RVU19B, RVU19C, RVU19D.
January 1, 2018
RVU18AR1
$27.43changed to$27.59
- Conversion factor 35.8887 changed to 35.9996
- Malpractice GPCI 1.429 changed to 1.631
Held through RVU18B, RVU18C, RVU18D.
January 1, 2017
RVU17A
$26.93changed to$27.43
- Conversion factor 35.8043 changed to 35.8887
- Practice expense RVU 0.37 changed to 0.38
- Malpractice GPCI 1.226 changed to 1.429
Held through RVU17B, RVU17C, RVU17D.
January 1, 2016
RVU16A
$27.03changed to$26.93
- Conversion factor 35.9335 changed to 35.8043
Held through RVU16B, RVU16C, RVU16D.
July 1, 2015
RVU15C
$26.90changed to$27.03
- Conversion factor 35.7547 changed to 35.9335
Held through RVU15D.
January 1, 2015
RVU15A
$28.12changed to$26.90
- Conversion factor 35.8228 changed to 35.7547
- Practice expense RVU 0.38 changed to 0.37
- Malpractice RVU 0.03 changed to 0.01
- Malpractice GPCI 1.165 changed to 1.226
Held through RVU15B.
January 1, 2014
RVU14A
$27.66changed to$28.12
- Conversion factor 34.0230 changed to 35.8228
- Practice expense RVU 0.41 changed to 0.38
- Malpractice GPCI 1.103 changed to 1.165
Held through RVU14B, RVU14C, RVU14D.
January 1, 2013
RVU13AR
Earliest loaded release: $27.66
Held through RVU13B, RVU13C, RVU13D.
| Effective from | Office | Facility | CMS release |
|---|---|---|---|
| 2026-10-01 | $26.72 | $16.37 | RVU26D |
| 2026-07-01 | $26.72 | $16.37 | RVU26C |
| 2026-04-01 | $26.72 | $16.37 | RVU26B |
| 2026-01-01 | $26.72 | $16.37 | RVU26A |
| 2025-10-01 | $26.19 | $19.40 | RVU25D |
| 2025-07-01 | $26.19 | $19.40 | RVU25C |
| 2025-04-01 | $26.19 | $19.40 | RVU25B |
| 2025-01-01 | $26.19 | $19.40 | RVU25A |
| 2024-10-01 | $27.29 | $19.97 | RVU24D |
| 2024-07-01 | $27.29 | $19.97 | RVU24C |
| 2024-04-01 | $27.29 | $19.97 | RVU24B |
| 2024-03-09 | $27.29 | $19.97 | RVU24AR |
| 2024-01-01 | $26.84 | $19.64 | RVU24A |
| 2023-10-01 | $27.78 | $20.32 | RVU23D |
| 2023-07-01 | $27.78 | $20.32 | RVU23C |
| 2023-04-01 | $27.78 | $20.32 | RVU23B |
| 2023-01-01 | $27.78 | $20.32 | RVU23A |
| 2022-10-01 | $28.37 | $20.41 | RVU22D |
| 2022-07-01 | $28.37 | $20.41 | RVU22C |
| 2022-04-01 | $28.37 | $20.41 | RVU22B |
| 2022-01-01 | $28.37 | $20.41 | RVU22A |
| 2021-10-01 | $28.26 | $20.58 | RVU21D |
| 2021-07-01 | $28.26 | $20.58 | RVU21C |
| 2021-04-01 | $28.26 | $20.58 | RVU21B |
| 2021-01-01 | $28.26 | $20.58 | RVU21A |
| 2020-10-01 | $28.26 | $21.40 | RVU20D |
| 2020-07-01 | $28.26 | $21.40 | RVU20C |
| 2020-04-01 | $28.26 | $21.40 | RVU20B |
| 2020-01-01 | $28.26 | $21.40 | RVU20A |
| 2019-10-01 | $28.34 | $21.85 | RVU19D |
| 2019-07-01 | $28.34 | $21.85 | RVU19C |
| 2019-04-01 | $28.34 | $21.85 | RVU19B |
| 2019-01-01 | $28.34 | $21.85 | RVU19A |
| 2018-10-01 | $27.59 | $21.83 | RVU18D |
| 2018-07-01 | $27.59 | $21.83 | RVU18C |
| 2018-04-01 | $27.59 | $21.83 | RVU18B |
| 2018-01-01 | $27.59 | $21.83 | RVU18AR1 |
| 2017-10-01 | $27.43 | $21.69 | RVU17D |
| 2017-07-01 | $27.43 | $21.69 | RVU17C |
| 2017-04-01 | $27.43 | $21.69 | RVU17B |
| 2017-01-01 | $27.43 | $21.69 | RVU17A |
| 2016-10-01 | $26.93 | $21.21 | RVU16D |
| 2016-07-01 | $26.93 | $21.21 | RVU16C |
| 2016-04-01 | $26.93 | $21.21 | RVU16B |
| 2016-01-01 | $26.93 | $21.21 | RVU16A |
| 2015-10-01 | $27.03 | $21.28 | RVU15D |
| 2015-07-01 | $27.03 | $21.28 | RVU15C |
| 2015-04-01 | $26.90 | $21.18 | RVU15B |
| 2015-01-01 | $26.90 | $21.18 | RVU15A |
| 2014-10-01 | $28.12 | $22.39 | RVU14D |
| 2014-07-01 | $28.12 | $22.39 | RVU14C |
| 2014-04-01 | $28.12 | $22.39 | RVU14B |
| 2014-01-01 | $28.12 | $22.39 | RVU14A |
| 2013-10-01 | $27.66 | $21.54 | RVU13D |
| 2013-07-01 | $27.66 | $21.54 | RVU13C |
| 2013-04-01 | $27.66 | $21.54 | RVU13B |
| 2013-01-01 | $27.66 | $21.54 | RVU13AR |
Where the Montana rate applies
Montana is a Medicare payment area, not a city. Our Census mapping connects it to 497 cities and communities in Montana. Some span more than one payment area; confirm with the service ZIP.
- Absarokee
- Acton
- Alberton
- Alder
- Alzada
- Amsterdam
- Anaconda-Deer Lodge County
- Antelope
92020 billing questions
Should gonioscopy be billed twice or with modifier 50 when both eyes are examined?
No. CMS already prices 92020 as bilateral. Report one unit for examination of one or both eyes; modifier 50 does not increase payment.
Is gonioscopy included in a comprehensive or intermediate eye exam?
The routine examination reported with 92004, 92014, 92002, or 92012 is different from a diagnostic angle examination with a goniolens. Report 92020 separately when the gonioscopy is medically necessary, performed, and documented.
Can gonioscopy be billed on the same day as laser trabeculoplasty or iridotomy?
Using a goniolens solely to guide the laser treatment is part of that procedure, not a separately billable gonioscopy. A distinct diagnostic angle examination requires its own medical necessity and findings.
What documentation supports gonioscopy?
Record the indication, eye or eyes examined, angle findings, and clinical interpretation. An angle grade and details such as synechiae, pigment, or neovascularization help describe the findings.
Which conditions commonly prompt diagnostic gonioscopy?
Examples include suspected or established glaucoma, narrow or potentially occludable angles, pigment dispersion, neovascular glaucoma, and suspected angle recession after trauma. The documented reason for examining the angle should support the service.
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
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