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CPT code 65800: Eye paracentesis, aqueous removal2026 Medicare rate & RVUs in Oxnard, CA

Anterior chamber paracentesis removes aqueous humor, commonly to reduce elevated eye pressure or obtain a sample for diagnostic testing.

CMS RVU26DEffective Oct 1, 2026One payment locality12.8K Medicare services in 2024

In Oxnard, CA, Medicare pays $132.62 for 65800 in the office and $74.19 when it’s performed in a hospital or facility.

$132.62Office (non-facility)
$74.19Hospital or facility
+10.0%vs the national office rate ($120.58)

Check a contract rate as a % of Medicare · 65800 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 65800 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Oxnard, CA
  2. What 65800 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 65800 covers

Code 65800 describes entry into the eye’s anterior chamber to withdraw aqueous humor. Ophthalmologists may perform it to lower elevated pressure, including in an acute pressure crisis, or to collect aqueous for diagnostic analysis. The procedure may be done in an office or facility setting and is distinct from removing vitreous or performing a more extensive glaucoma operation.

Report the code when the documented service is anterior chamber paracentesis with aqueous removal. Record the treated eye, clinical reason, procedure performed, and whether a specimen was collected. CMS assigns a 0-day global period, so same-day preoperative and postoperative care is included. When multiple procedures are performed in one session, the highest-valued procedure is paid in full and the others are subject to the standard multiple procedure reduction. For bilateral services, modifier 50 is paid at 150%. Assistant-at-surgery payment is restricted; co-surgeons and team surgery 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 Oxnard, CA compares for 65800

Across 109 of 109 payment localities, the office rate for 65800 runs from $109.21 in Arkansas to $153.72 in San Benito County, CA. Oxnard, CA pays $132.62. The RVUs are the same everywhere; the geographic indexes change the dollars.

65800 in Oxnard, CA vs other payment areas
  1. Oxnard, CA · this page$132.62
  2. Bakersfield, CA · California$126.37−$6.25
  3. Chico, CA · California$125.98−$6.64
  4. El Centro, CA · California$126.00−$6.62
  5. Fresno, CA · California$125.98−$6.64
  6. Hanford, CA · California$125.98−$6.64
  7. Los Angeles, CA · California$133.50+$0.88

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

Every other payment area

65800 in every other Medicare payment locality
Payment localityOfficeFacility
Madera, CACalifornia$125.98$71.80
Merced, CACalifornia$125.98$71.80
Modesto, CACalifornia$125.98$71.80
Napa, CACalifornia$142.98$77.83
Redding, CACalifornia$125.98$71.80
Rest of CaliforniaCalifornia$125.98$71.80
Riverside, CACalifornia$127.30$73.12
Sacramento, CACalifornia$131.40$73.91

65800 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.

$109.21

$148.00

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

View every state and territory as a table
65800 office rate range by state
State / territoryOffice rate rangeLocalities
AK$148.001
AL$110.491
AR$109.211
AZ$117.931
CA$125.98–$153.7229
CO$124.571
CT$127.561
DC$135.611
DE$119.621
FL$119.65–$129.443
GA$114.13–$122.602
GU$128.041
HI$128.041
IA$112.481
ID$113.121
IL$117.02–$126.454
IN$113.641
KS$112.181
KY$112.821
LA$112.73–$117.182
MA$124.10–$135.142
MD$121.55–$135.613
ME$113.72–$118.502
MI$115.28–$120.992
MN$119.691
MO$111.25–$117.383
MS$110.251
MT$120.571
NC$114.651
ND$118.201
NE$112.941
NH$122.821
NJ$129.10–$134.672
NM$115.841
NV$119.971
NY$116.05–$139.825
OH$114.801
OK$112.541
OR$119.12–$127.762
PA$114.88–$124.992
PR$121.251
RI$123.291
SC$114.901
SD$117.921
TN$112.641
TX$114.28–$124.098
UT$116.161
VA$118.26–$135.612
VI$121.251
VT$117.931
WA$123.81–$137.502
WI$115.001
WV$113.551
WY$119.541

See 65800 in every payment locality

How the 65800 rate is calculated

Each of 65800’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 · 65800

RVUs × geographic indexes × conversion factor

Office or facility?

Work1.49

1.49 RVUs× 1.000 GPCI

Practice expense2.00

2.00 RVUs× 1.000 GPCI

Malpractice0.12

0.12 RVUs× 1.000 GPCI

Adjusted RVUs

3.6100

Conversion factor

$33.4009

Medicare rate

$120.58

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

The exact Oxnard, CA inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

7,346

Code
65800
Physician work
1.49
Practice expense
2.00
Malpractice
0.12

GPCI2026.csv

18

Locality
Oxnard, CA
Physician work
1.028
Practice expense
1.182
Malpractice
0.623
Office calculation for 65800 in Oxnard, CA
ComponentRVULocality factorAdjusted
Physician work1.49× 1.0281.5317
Practice expense2.00× 1.1822.3640
Malpractice0.12× 0.6230.0748
Total RVUs3.9705
Conversion factor× 33.4009

Office rate, Oxnard, CA$132.62

Office: (1.49 × 1.028 + 2 × 1.182 + 0.12 × 0.623) × $33.4009 = $132.62

Facility: (1.49 × 1.028 + 0.52 × 1.182 + 0.12 × 0.623) × $33.4009 = $74.19

Open 65800 in the RVU calculator

Payment rules and modifiers for 65800

The CMS indicators that decide how 65800 is paid alongside other services.

CMS payment indicators · 65800

Eye paracentesis, aqueous removal

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)1Bilateral with modifier 50 pays 150% of the fee schedule amount.
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 50 · payment effect

With and without the modifier

65800 without 50 · national office

$120.58

Eye paracentesis, aqueous removal

65800-50 · Bilateral: 150%

$180.87

Both sides on one line with modifier 50 are paid at 150% of the fee schedule amount (subject to multiple-procedure rules with other procedures).

When to use modifier 50

Codes related to 65800

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

Codes related to 65800
CodeHow it relatesOffice range, Oxnard, CA
Same family
65810Eye drainage, anterior vitreous removalRelated anterior chamber paracentesis code; distinguish by the documented service, including medication injection.No office rate
65815Eye drainage, with chamber replacementAnterior approach paracentesis involving vitreous removal rather than aqueous removal.$720.52
Used instead
65820Goniotomy, angle incisionGoniotomy is a different glaucoma procedure that treats outflow through the angle.No office rate

How 65800 has changed in Oxnard, CA

65800 · Office / nonfacility

$132.62

Effective 2026-10-01

The base rate is $6.02 higher than on 2025-10-01, moving from $126.60 to $132.62 (4.8%).

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

    $126.60changed to$132.62

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 1.53 changed to 1.49
    • Practice expense RVU 1.91 changed to 2.00
    • Malpractice RVU 0.13 changed to 0.12
    • Work GPCI 1.026 changed to 1.028
    • Practice expense GPCI 1.183 changed to 1.182
    • Malpractice GPCI 0.651 changed to 0.623

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    $130.07changed to$126.60

    • Conversion factor 33.2875 changed to 32.3465
    • Malpractice RVU 0.12 changed to 0.13

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $127.95changed to$130.07

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $131.69changed to$127.95

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense RVU 1.89 changed to 1.91
    • Work GPCI 1.027 changed to 1.026
    • Practice expense GPCI 1.181 changed to 1.183
    • Malpractice GPCI 0.689 changed to 0.651

  5. January 1, 2023

    RVU23A

    $131.81changed to$131.69

    • Conversion factor 34.6062 changed to 33.8872
    • Practice expense RVU 1.83 changed to 1.89
    • Malpractice RVU 0.11 changed to 0.12
    • Practice expense GPCI 1.179 changed to 1.181
    • Malpractice GPCI 0.726 changed to 0.689

    Held through RVU23B, RVU23C, RVU23D.

  6. January 1, 2022

    RVU22A

    $132.99changed to$131.81

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 1.82 changed to 1.83
    • Malpractice RVU 0.13 changed to 0.11

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $133.83changed to$132.99

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 1.75 changed to 1.82
    • Malpractice RVU 0.11 changed to 0.13
    • Work GPCI 1.026 changed to 1.027
    • Practice expense GPCI 1.178 changed to 1.179
    • Malpractice GPCI 0.700 changed to 0.726

    Held through RVU21B, RVU21C, RVU21D.

  8. January 1, 2020

    RVU20A

    $134.57changed to$133.83

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense RVU 1.78 changed to 1.75
    • Work GPCI 1.024 changed to 1.026
    • Practice expense GPCI 1.176 changed to 1.178
    • Malpractice GPCI 0.673 changed to 0.700

    Held through RVU20B, RVU20C, RVU20D.

  9. January 1, 2019

    RVU19A

    $134.42changed to$134.57

    • Conversion factor 35.9996 changed to 36.0391

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $132.51changed to$134.42

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense RVU 1.73 changed to 1.78
    • Work GPCI 1.027 changed to 1.024
    • Practice expense GPCI 1.178 changed to 1.176
    • Malpractice GPCI 0.754 changed to 0.673

    Held through RVU18B, RVU18C, RVU18D.

  11. January 1, 2017

    RVU17A

    $132.80changed to$132.51

    • Conversion factor 35.8043 changed to 35.8887
    • Work GPCI 1.030 changed to 1.027
    • Practice expense GPCI 1.180 changed to 1.178
    • Malpractice GPCI 0.834 changed to 0.754

    Held through RVU17B, RVU17C, RVU17D.

  12. January 1, 2016

    RVU16A

    $133.28changed to$132.80

    • Conversion factor 35.9335 changed to 35.8043

    Held through RVU16B, RVU16C, RVU16D.

  13. July 1, 2015

    RVU15C

    $132.62changed to$133.28

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  14. January 1, 2015

    RVU15A

    $135.54changed to$132.62

    • Conversion factor 35.8228 changed to 35.7547
    • Malpractice RVU 0.21 changed to 0.11
    • Work GPCI 1.032 changed to 1.030
    • Practice expense GPCI 1.187 changed to 1.180
    • Malpractice GPCI 0.720 changed to 0.834

    Held through RVU15B.

  15. January 1, 2014

    RVU14A

    $134.66changed to$135.54

    • Conversion factor 34.0230 changed to 35.8228
    • Practice expense RVU 1.88 changed to 1.73
    • Malpractice RVU 0.22 changed to 0.21
    • Work GPCI 1.034 changed to 1.032
    • Practice expense GPCI 1.193 changed to 1.187
    • Malpractice GPCI 0.605 changed to 0.720

    Held through RVU14B, RVU14C, RVU14D.

  16. October 1, 2013

    RVU13D

    No ratechanged to$134.66

  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$132.62$74.19RVU26D
2026-07-01$132.62$74.19RVU26C
2026-04-01$132.62$74.19RVU26B
2026-01-01$132.62$74.19RVU26A
2025-10-01$126.60$91.40RVU25D
2025-07-01$126.60$91.40RVU25C
2025-04-01$126.60$91.40RVU25B
2025-01-01$126.60$91.40RVU25A
2024-10-01$130.07$93.45RVU24D
2024-07-01$130.07$93.45RVU24C
2024-04-01$130.07$93.45RVU24B
2024-03-09$130.07$93.45RVU24AR
2024-01-01$127.95$91.92RVU24A
2023-10-01$131.69$94.47RVU23D
2023-07-01$131.69$94.47RVU23C
2023-04-01$131.69$94.47RVU23B
2023-01-01$131.69$94.47RVU23A
2022-10-01$131.81$95.49RVU22D
2022-07-01$131.81$95.49RVU22C
2022-04-01$131.81$95.49RVU22B
2022-01-01$131.81$95.49RVU22A
2021-10-01$132.99$97.20RVU21D
2021-07-01$132.99$97.20RVU21C
2021-04-01$132.99$97.20RVU21B
2021-01-01$132.99$97.20RVU21A
2020-10-01$133.83$99.39RVU20D
2020-07-01$133.83$99.39RVU20C
2020-04-01$133.83$99.39RVU20B
2020-01-01$133.83$99.39RVU20A
2019-10-01$134.57$99.39RVU19D
2019-07-01$134.57$99.39RVU19C
2019-04-01$134.57$99.39RVU19B
2019-01-01$134.57$99.39RVU19A
2018-10-01$134.42$100.13RVU18D
2018-07-01$134.42$100.13RVU18C
2018-04-01$134.42$100.13RVU18B
2018-01-01$134.42$100.13RVU18AR1
2017-10-01$132.51$99.95RVU17D
2017-07-01$132.51$99.95RVU17C
2017-04-01$132.51$99.95RVU17B
2017-01-01$132.51$99.95RVU17A
2016-10-01$132.80$100.27RVU16D
2016-07-01$132.80$100.27RVU16C
2016-04-01$132.80$100.27RVU16B
2016-01-01$132.80$100.27RVU16A
2015-10-01$133.28$100.63RVU15D
2015-07-01$133.28$100.63RVU15C
2015-04-01$132.62$100.13RVU15B
2015-01-01$132.62$100.13RVU15A
2014-10-01$135.54$103.23RVU14D
2014-07-01$135.54$103.23RVU14C
2014-04-01$135.54$103.23RVU14B
2014-01-01$135.54$103.23RVU14A
2013-10-01$134.66$100.16RVU13D
2013-07-01Rate data unavailableRate data unavailableRVU13C
2013-04-01Rate data unavailableRate data unavailableRVU13B
2013-01-01Rate data unavailableRate data unavailableRVU13AR

Price 65800 for an earlier date of service

Where the Oxnard, CA rate applies

Oxnard, CA is a Medicare payment area, not a city. Our Census mapping connects it to 26 cities and communities in California. Some span more than one payment area; confirm with the service ZIP.

  • Oxnard
  • Thousand Oaks
  • Bell Canyon
  • Camarillo
  • Casa Conejo
  • Channel Islands Beach
  • El Rio
  • Fillmore

Browse all communities in California

65800 billing questions

How is 65800 distinguished from 65810?

65800 is for anterior chamber paracentesis with aqueous removal. Compare the documented work with 65810 when medication injection is also performed or the service otherwise fits that code’s expanded description.

Can 65800 be reported with another eye procedure on the same date?

The code identifies a separate procedure, so report it when the paracentesis is a distinct service rather than an integral part of a more extensive procedure. Apply the multiple procedure reduction when separate procedures are performed in the same session.

What documentation supports 65800?

Document anterior chamber entry and aqueous removal, the eye treated, and the indication, such as elevated pressure or diagnostic sampling. If fluid is collected, note the specimen and its disposition.

How is bilateral 65800 reported?

For procedures on both eyes, report modifier 50; CMS pays the bilateral procedure at 150%.

Can an assistant or co-surgeon be reported for this procedure?

CMS does not pay an assistant at surgery for 65800. Co-surgeons and team surgery 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 65800PPRRVU2026_Oct_nonQPP.csv, line 7,346 (RVU26D)
Geographic factors for Oxnard, CAGPCI2026.csv, line 18 (RVU26D)

Open CMS sourceHow we calculate rates

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