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CPT code 36596: Catheter declotting, mechanical, thrombotic obstruction2026 Medicare rate & RVUs in Connecticut

Report 36596 for percutaneous mechanical removal of a thrombotic obstruction inside a central venous catheter or other central venous access device.

CMS RVU26DEffective Oct 1, 2026One payment locality577 Medicare services in 2024

In Connecticut, Medicare pays $125.72 for 36596 in the office and $43.35 when it’s performed in a hospital or facility.

$125.72Office (non-facility)
$43.35Hospital or facility
+6.9%vs the national office rate ($117.57)

Check a contract rate as a % of Medicare · 36596 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 36596 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Connecticut
  2. What 36596 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 36596 covers

This service uses a percutaneous mechanical technique to clear thrombus obstructing the lumen of a central venous access device. It may be performed when a tunneled central venous catheter, such as one used for dialysis or infusion therapy, is occluded by clot. The procedure can include fluoroscopic guidance when performed. It addresses the obstruction; it is distinct from removing or replacing the catheter itself.

Report 36596 when documentation supports a thrombotic intraluminal obstruction and mechanical removal. A record of the affected device, the obstructing clot, and the technique used supports code selection over treatment with a thrombolytic agent alone or removal of a nonthrombotic obstruction. CMS assigns a 0-day global period, so same-day preoperative and postoperative care is included. When multiple procedures occur in one session, the highest-valued procedure is paid in full and other procedures are subject to the standard 50% multiple-procedure reduction. Modifier 50 is inappropriate. Medicare does not pay an assistant at surgery for this service, and 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 Connecticut compares for 36596

Across 109 of 109 payment localities, the office rate for 36596 runs from $103.17 in Arkansas to $158.11 in San Benito County, CA. Connecticut pays $125.72. The RVUs are the same everywhere; the geographic indexes change the dollars.

36596 in Connecticut vs other payment areas
  1. Connecticut · this page$125.72
  2. Los Angeles, CA · California$133.72+$8.00
  3. Washington, DC area · District of Columbia$135.24+$9.52
  4. Miami, FL · Florida$126.86+$1.14
  5. Chicago, IL · Illinois$122.95−$2.77
  6. Manhattan, NY · New York$135.79+$10.07
  7. Alaska · Alaska$133.93+$8.21

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

Every other payment area

36596 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama$104.79$37.86
ArkansasArkansas$103.17$37.46
ArizonaArizona$114.27$40.15
Bakersfield, CACalifornia$125.19$41.36
Chico, CACalifornia$124.87$41.04
El Centro, CACalifornia$124.89$41.06
Fresno, CACalifornia$124.87$41.04
Hanford, CACalifornia$124.87$41.04

36596 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.

$103.17

$141.49

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

View every state and territory as a table
36596 office rate range by state
State / territoryOffice rate rangeLocalities
AK$133.931
AL$104.791
AR$103.171
AZ$114.271
CA$124.87–$158.1129
CO$122.791
CT$125.721
DC$135.241
DE$116.251
FL$115.48–$126.863
GA$108.61–$119.822
GU$128.291
HI$128.291
IA$107.751
ID$108.471
IL$111.85–$123.004
IN$109.151
KS$107.161
KY$107.321
LA$107.12–$112.792
MA$121.96–$135.532
MD$118.59–$135.243
ME$109.02–$115.412
MI$110.26–$116.962
MN$117.581
MO$105.12–$113.283
MS$104.171
MT$117.561
NC$110.251
ND$115.391
NE$108.391
NH$120.781
NJ$127.14–$133.682
NM$110.881
NV$117.051
NY$112.00–$139.205
OH$109.811
OK$107.171
OR$116.12–$126.962
PA$110.03–$122.392
PR$118.501
RI$120.591
SC$110.221
SD$115.131
TN$107.721
TX$109.25–$122.398
UT$111.831
VA$114.97–$135.242
VI$118.501
VT$114.861
WA$121.75–$138.442
WI$111.271
WV$107.431
WY$116.621

See 36596 in every payment locality

How the 36596 rate is calculated

Each of 36596’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 · 36596

RVUs × geographic indexes × conversion factor

Office or facility?

Work0.73

0.73 RVUs× 1.000 GPCI

Practice expense2.68

2.68 RVUs× 1.000 GPCI

Malpractice0.11

0.11 RVUs× 1.000 GPCI

Adjusted RVUs

3.5200

Conversion factor

$33.4009

Medicare rate

$117.57

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

The exact Connecticut inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

4,534

Code
36596
Physician work
0.73
Practice expense
2.68
Malpractice
0.11

GPCI2026.csv

38

Locality
Connecticut
Physician work
1.020
Practice expense
1.077
Malpractice
1.210
Office calculation for 36596 in Connecticut
ComponentRVULocality factorAdjusted
Physician work0.73× 1.0200.7446
Practice expense2.68× 1.0772.8864
Malpractice0.11× 1.2100.1331
Total RVUs3.7641
Conversion factor× 33.4009

Office rate, Connecticut$125.72

Office: (0.73 × 1.02 + 2.68 × 1.077 + 0.11 × 1.21) × $33.4009 = $125.72

Facility: (0.73 × 1.02 + 0.39 × 1.077 + 0.11 × 1.21) × $33.4009 = $43.35

Open 36596 in the RVU calculator

Payment rules and modifiers for 36596

The CMS indicators that decide how 36596 is paid alongside other services.

CMS payment indicators · 36596

Catheter declotting, mechanical, thrombotic obstruction

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

36596 without 51 · national office

$117.57

Catheter declotting, mechanical, thrombotic obstruction

36596-51 · Second procedure: 50%

$58.79

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 36596

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

Codes related to 36596
CodeHow it relatesOffice range, Connecticut
Same family
36595Catheter removal, mechanical, no port or pumpMechanical removal of a nonthrombotic intraluminal obstruction; 36596 is for thrombotic obstruction.$620.05
Used instead
36593Device declot, thrombolytic treatmentDeclotting by thrombolytic agent rather than mechanical removal.$41.10
36589Catheter removal, tunneled catheter, no portRemoval of a tunneled central venous catheter when removal, not mechanical declotting, is performed.$176.47
36590Port removal, tunneled device with portRemoval of a tunneled central venous access device with a subcutaneous port.$239.06
36581Catheter replacement, tunneled, without portReplacement of a tunneled central venous catheter rather than mechanical clearance of its obstruction.$812.14

How 36596 has changed in Connecticut

36596 · Office / nonfacility

$125.72

Effective 2026-10-01

The base rate is $6.25 higher than on 2025-10-01, moving from $119.47 to $125.72 (5.2%).

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

    $119.47changed to$125.72

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 0.75 changed to 0.73
    • Practice expense RVU 2.55 changed to 2.68
    • Malpractice RVU 0.12 changed to 0.11
    • Work GPCI 1.022 changed to 1.020
    • Practice expense GPCI 1.091 changed to 1.077
    • Malpractice GPCI 1.207 changed to 1.210

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    $123.63changed to$119.47

    • Conversion factor 33.2875 changed to 32.3465
    • Practice expense RVU 2.58 changed to 2.55
    • Malpractice RVU 0.11 changed to 0.12

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $121.61changed to$123.63

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $125.78changed to$121.61

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense RVU 2.57 changed to 2.58
    • Malpractice RVU 0.10 changed to 0.11
    • Work GPCI 1.030 changed to 1.022
    • Practice expense GPCI 1.102 changed to 1.091
    • Malpractice GPCI 1.070 changed to 1.207

  5. January 1, 2023

    RVU23A

    $128.84changed to$125.78

    • Conversion factor 34.6062 changed to 33.8872
    • Practice expense RVU 2.56 changed to 2.57
    • Work GPCI 1.037 changed to 1.030
    • Practice expense GPCI 1.114 changed to 1.102
    • Malpractice GPCI 0.934 changed to 1.070

    Held through RVU23B, RVU23C, RVU23D.

  6. January 1, 2022

    RVU22A

    $134.18changed to$128.84

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 2.67 changed to 2.56

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $137.05changed to$134.18

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 2.63 changed to 2.67
    • Malpractice RVU 0.09 changed to 0.10
    • Work GPCI 1.029 changed to 1.037
    • Practice expense GPCI 1.113 changed to 1.114
    • Malpractice GPCI 1.094 changed to 0.934

    Held through RVU21B, RVU21C, RVU21D.

  8. January 1, 2020

    RVU20A

    $141.13changed to$137.05

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense RVU 2.72 changed to 2.63
    • Malpractice RVU 0.10 changed to 0.09
    • Work GPCI 1.021 changed to 1.029
    • Practice expense GPCI 1.112 changed to 1.113
    • Malpractice GPCI 1.255 changed to 1.094

    Held through RVU20B, RVU20C, RVU20D.

  9. January 1, 2019

    RVU19A

    $147.38changed to$141.13

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 2.88 changed to 2.72

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $147.81changed to$147.38

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense RVU 2.90 changed to 2.88
    • Malpractice RVU 0.09 changed to 0.10
    • Work GPCI 1.023 changed to 1.021
    • Practice expense GPCI 1.117 changed to 1.112
    • Malpractice GPCI 1.244 changed to 1.255

    Held through RVU18B, RVU18C, RVU18D.

  11. January 1, 2017

    RVU17A

    $150.31changed to$147.81

    • Conversion factor 35.8043 changed to 35.8887
    • Practice expense RVU 2.95 changed to 2.90
    • Malpractice RVU 0.10 changed to 0.09
    • Work GPCI 1.024 changed to 1.023
    • Practice expense GPCI 1.121 changed to 1.117
    • Malpractice GPCI 1.232 changed to 1.244

    Held through RVU17B, RVU17C, RVU17D.

  12. January 1, 2016

    RVU16A

    $150.85changed to$150.31

    • Conversion factor 35.9335 changed to 35.8043

    Held through RVU16B, RVU16C, RVU16D.

  13. July 1, 2015

    RVU15C

    $150.10changed to$150.85

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  14. January 1, 2015

    RVU15A

    $150.27changed to$150.10

    • Conversion factor 35.8228 changed to 35.7547
    • Practice expense RVU 2.96 changed to 2.95
    • Practice expense GPCI 1.116 changed to 1.121
    • Malpractice GPCI 1.234 changed to 1.232

    Held through RVU15B.

  15. January 1, 2014

    RVU14A

    $152.69changed to$150.27

    • Conversion factor 34.0230 changed to 35.8228
    • Practice expense RVU 3.24 changed to 2.96
    • Practice expense GPCI 1.110 changed to 1.116
    • Malpractice GPCI 1.235 changed to 1.234

    Held through RVU14B, RVU14C, RVU14D.

  16. January 1, 2013

    RVU13AR

    Earliest loaded release: $152.69

    Held through RVU13B, RVU13C, RVU13D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$125.72$43.35RVU26D
2026-07-01$125.72$43.35RVU26C
2026-04-01$125.72$43.35RVU26B
2026-01-01$125.72$43.35RVU26A
2025-10-01$119.47$46.77RVU25D
2025-07-01$119.47$46.77RVU25C
2025-04-01$119.47$46.77RVU25B
2025-01-01$119.47$46.77RVU25A
2024-10-01$123.63$47.00RVU24D
2024-07-01$123.63$47.00RVU24C
2024-04-01$123.63$47.00RVU24B
2024-03-09$123.63$47.00RVU24AR
2024-01-01$121.61$46.24RVU24A
2023-10-01$125.78$46.61RVU23D
2023-07-01$125.78$46.61RVU23C
2023-04-01$125.78$46.61RVU23B
2023-01-01$125.78$46.61RVU23A
2022-10-01$128.84$47.11RVU22D
2022-07-01$128.84$47.11RVU22C
2022-04-01$128.84$47.11RVU22B
2022-01-01$128.84$47.11RVU22A
2021-10-01$134.18$46.72RVU21D
2021-07-01$134.18$46.72RVU21C
2021-04-01$134.18$46.72RVU21B
2021-01-01$134.18$46.72RVU21A
2020-10-01$137.05$48.28RVU20D
2020-07-01$137.05$48.28RVU20C
2020-04-01$137.05$48.28RVU20B
2020-01-01$137.05$48.28RVU20A
2019-10-01$141.13$49.35RVU19D
2019-07-01$141.13$49.35RVU19C
2019-04-01$141.13$49.35RVU19B
2019-01-01$141.13$49.35RVU19A
2018-10-01$147.38$49.70RVU18D
2018-07-01$147.38$49.70RVU18C
2018-04-01$147.38$49.70RVU18B
2018-01-01$147.38$49.70RVU18AR1
2017-10-01$147.81$49.59RVU17D
2017-07-01$147.81$49.59RVU17C
2017-04-01$147.81$49.59RVU17B
2017-01-01$147.81$49.59RVU17A
2016-10-01$150.31$49.97RVU16D
2016-07-01$150.31$49.97RVU16C
2016-04-01$150.31$49.97RVU16B
2016-01-01$150.31$49.97RVU16A
2015-10-01$150.85$50.15RVU15D
2015-07-01$150.85$50.15RVU15C
2015-04-01$150.10$49.90RVU15B
2015-01-01$150.10$49.90RVU15A
2014-10-01$150.27$50.32RVU14D
2014-07-01$150.27$50.32RVU14C
2014-04-01$150.27$50.32RVU14B
2014-01-01$150.27$50.32RVU14A
2013-10-01$152.69$48.84RVU13D
2013-07-01$152.69$48.84RVU13C
2013-04-01$152.69$48.84RVU13B
2013-01-01$152.69$48.84RVU13AR

Price 36596 for an earlier date of service

Where the Connecticut rate applies

Connecticut is a Medicare payment area, not a city. Our Census mapping connects it to 215 cities and communities in Connecticut. Some span more than one payment area; confirm with the service ZIP.

  • Ansonia
  • Ball Pond
  • Baltic
  • Bantam
  • Bethel
  • Bethlehem Village
  • Bigelow Corners
  • Blue Hills

Browse all communities in Connecticut

36596 billing questions

How does 36596 differ from 36595?

36596 is for mechanical removal of a thrombotic obstruction. 36595 is for mechanical removal of a nonthrombotic obstruction.

Is 36596 appropriate when a thrombolytic agent clears the catheter?

No. 36596 describes mechanical removal of thrombus; declotting by thrombolytic agent is represented by 36593.

Can catheter removal or replacement be reported instead?

Use a removal or replacement code when the catheter is taken out or exchanged. 36596 represents mechanical clearance of an obstruction, not removal or replacement of the device.

Is fluoroscopic guidance separately reported?

Fluoroscopic guidance is included in 36596 when performed; do not report it separately as guidance for this service.

Can modifier 50 or an assistant-at-surgery claim be used?

Modifier 50 is inappropriate for 36596. Medicare does not pay an assistant at surgery for this service.

What documentation supports 36596?

Document the central venous access device, the thrombotic intraluminal obstruction, and the mechanical technique used to clear it.

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 36596PPRRVU2026_Oct_nonQPP.csv, line 4,534 (RVU26D)
Geographic factors for ConnecticutGPCI2026.csv, line 38 (RVU26D)

Open CMS sourceHow we calculate rates

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