CPT code 36585: Device replacement, ported peripheral access device2026 Medicare rate & RVUs in Montana

Reports complete replacement of a peripherally inserted central access device with a subcutaneous port, using the existing peripheral venous route.

CMS RVU26DEffective Oct 1, 2026One payment locality55 Medicare services in 2024

In Montana, Medicare pays $1,493.27 for 36585 in the office and $293.85 when it’s performed in a hospital or facility.

$1,493.27Office (non-facility)
$293.85Hospital or facility
−0.0%vs the national office rate ($1,493.35)

Check a contract rate as a % of Medicare · 36585 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 36585 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Montana
  2. What 36585 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 36585 covers

This service replaces the complete port-containing device used for central venous access when the access enters through a peripheral vein. The replacement uses the existing venous route; it is distinct from exchanging a standard PICC or replacing a centrally inserted tunneled catheter. Vascular access specialists, interventional radiologists, and surgeons may perform it in a hospital or procedural setting, commonly when the existing device requires complete replacement.

Report the code when documentation identifies a port-containing peripheral access device and supports complete replacement through the existing venous route. The record should distinguish this device from a non-ported PICC and from a centrally inserted catheter. Related postoperative visits during the 10-day global period are included. When multiple procedures occur in one session, the highest-valued procedure is paid in full and other procedures are subject to the standard multiple-procedure reduction. Modifier 50 is inappropriate. Assistant-at-surgery payment requires documented medical necessity; 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 Montana compares for 36585

Across 109 of 109 payment localities, the office rate for 36585 runs from $1,289.99 in Arkansas to $2,067.12 in San Benito County, CA. Montana pays $1,493.27. The RVUs are the same everywhere; the geographic indexes change the dollars.

36585 in Montana vs other payment areas
  1. Montana · this page$1,493.27
  2. Los Angeles, CA · California$1,724.41+$231.14
  3. Washington, DC area · District of Columbia$1,737.99+$244.72
  4. Miami, FL · Florida$1,608.58+$115.31
  5. Chicago, IL · Illinois$1,553.26+$59.99
  6. Manhattan, NY · New York$1,737.75+$244.48
  7. Alaska · Alaska$1,634.74+$141.47

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

Every other payment area

36585 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama$1,312.90$263.40
ArkansasArkansas$1,289.99$259.68
ArizonaArizona$1,447.13$284.89
Bakersfield, CACalifornia$1,605.51$290.94
Chico, CACalifornia$1,602.26$287.69
El Centro, CACalifornia$1,602.46$287.89
Fresno, CACalifornia$1,602.26$287.69
Hanford, CACalifornia$1,602.26$287.69

36585 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.

$1,289.99

$1,834.69

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

View every state and territory as a table
36585 office rate range by state
State / territoryOffice rate rangeLocalities
AK$1,634.741
AL$1,312.901
AR$1,289.991
AZ$1,447.131
CA$1,602.26–$2,067.1229
CO$1,569.711
CT$1,605.191
DC$1,737.991
DE$1,474.381
FL$1,456.34–$1,608.583
GA$1,360.36–$1,522.782
GU$1,654.891
HI$1,654.891
IA$1,358.201
ID$1,367.791
IL$1,402.72–$1,560.794
IN$1,377.441
KS$1,348.191
KY$1,345.251
LA$1,341.78–$1,421.962
MA$1,556.62–$1,747.882
MD$1,507.18–$1,737.993
ME$1,373.81–$1,466.712
MI$1,385.18–$1,475.462
MN$1,502.701
MO$1,312.45–$1,430.883
MS$1,301.651
MT$1,493.271
NC$1,391.441
ND$1,469.351
NE$1,367.861
NH$1,541.741
NJ$1,623.16–$1,714.062
NM$1,393.301
NV$1,487.911
NY$1,416.19–$1,783.895
OH$1,380.291
OK$1,344.891
OR$1,476.14–$1,630.072
PA$1,384.26–$1,557.282
PR$1,507.081
RI$1,534.841
SC$1,388.241
SD$1,466.521
TN$1,356.041
TX$1,373.19–$1,564.648
UT$1,411.031
VA$1,459.32–$1,737.992
VI$1,507.081
VT$1,460.361
WA$1,554.72–$1,789.292
WI$1,410.651
WV$1,340.041
WY$1,482.851

See 36585 in every payment locality

How the 36585 rate is calculated

Each of 36585’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 · 36585

RVUs × geographic indexes × conversion factor

Office or facility?

Work4.48

4.48 RVUs× 1.000 GPCI

Practice expense39.02

39.02 RVUs× 1.000 GPCI

Malpractice1.21

1.21 RVUs× 1.000 GPCI

Adjusted RVUs

44.7100

Conversion factor

$33.4009

Medicare rate

$1,493.35

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

4,527

Code
36585
Physician work
4.48
Practice expense
39.02
Malpractice
1.21

GPCI2026.csv

71

Locality
Montana
Physician work
1.000
Practice expense
1.000
Malpractice
0.998
Office calculation for 36585 in Montana
ComponentRVULocality factorAdjusted
Physician work4.48× 1.0004.4800
Practice expense39.02× 1.00039.0200
Malpractice1.21× 0.9981.2076
Total RVUs44.7076
Conversion factor× 33.4009

Office rate, Montana$1493.27

Office: (4.48 × 1 + 39.02 × 1 + 1.21 × 0.998) × $33.4009 = $1493.27

Facility: (4.48 × 1 + 3.11 × 1 + 1.21 × 0.998) × $33.4009 = $293.85

Open 36585 in the RVU calculator

Payment rules and modifiers for 36585

36585 has a 10-day global period: related visits in that window are included in the surgery payment.

CMS payment indicators · 36585

Device replacement, ported peripheral access device

RuleCMS valueWhat it means
Global period010Minor procedure: the day of the procedure plus 10 days after are 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)0Not paid without supporting documentation.
Co-surgeons (62)0Not permitted.
Team surgery (66)0Not permitted.
Professional/technical0Physician service: no professional/technical split.
Split (54/55/56)0.10/0.80/0.10Share of the payment for pre-op, the procedure itself, and post-op care.

Global surgery period · 36585

Device replacement, ported peripheral access device

10-day global period ends

Oct 11, 2026

Covers Oct 1, 2026 through Oct 11, 2026 (11 days).

Visit on Oct 31, 2026

After the global period ends: visits and procedures are billed normally.

SurgeryVisit
Sep 28, 2026Oct 14, 2026

What modifiers do to the payment

Modifier 51 · payment effect

With and without the modifier

36585 without 51 · national office

$1,493.35

Device replacement, ported peripheral access device

36585-51 · Second procedure: 50%

$746.68

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

How 36585 has changed in Montana

36585 · Office / nonfacility

$1493.27

Effective 2026-10-01

The base rate is $235.82 higher than on 2025-10-01, moving from $1257.45 to $1493.27 (18.8%).

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

    $1257.45changed to$1493.27

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 4.59 changed to 4.48
    • Practice expense RVU 33.15 changed to 39.02
    • Malpractice RVU 1.16 changed to 1.21
    • Malpractice GPCI 0.978 changed to 0.998

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    $1115.96changed to$1257.45

    • Conversion factor 33.2875 changed to 32.3465
    • Practice expense RVU 28.26 changed to 33.15
    • Malpractice RVU 0.69 changed to 1.16

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $1097.74changed to$1115.96

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $1182.41changed to$1097.74

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense RVU 29.53 changed to 28.26
    • Malpractice RVU 0.79 changed to 0.69
  5. January 1, 2023

    RVU23A

    $1253.85changed to$1182.41

    • Conversion factor 34.6062 changed to 33.8872
    • Practice expense RVU 30.87 changed to 29.53
    • Malpractice GPCI 0.977 changed to 0.978

    Held through RVU23B, RVU23C, RVU23D.

  6. January 1, 2022

    RVU22A

    $1202.13changed to$1253.85

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 29.09 changed to 30.87

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $1142.60changed to$1202.13

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 26.04 changed to 29.09
    • Malpractice GPCI 1.304 changed to 0.977

    Held through RVU21B, RVU21C, RVU21D.

  8. January 1, 2020

    RVU20A

    $1117.75changed to$1142.60

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense RVU 25.12 changed to 26.04
    • Malpractice RVU 0.80 changed to 0.79
    • Malpractice GPCI 1.631 changed to 1.304

    Held through RVU20B, RVU20C, RVU20D.

  9. January 1, 2019

    RVU19A

    $1101.89changed to$1117.75

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 24.73 changed to 25.12
    • Malpractice RVU 0.79 changed to 0.80

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $1108.41changed to$1101.89

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense RVU 25.18 changed to 24.73
    • Malpractice RVU 0.78 changed to 0.79
    • Malpractice GPCI 1.429 changed to 1.631

    Held through RVU18B, RVU18C, RVU18D.

  11. January 1, 2017

    RVU17A

    $1181.69changed to$1108.41

    • Conversion factor 35.8043 changed to 35.8887
    • Work RVU 4.84 changed to 4.59
    • Practice expense RVU 27.22 changed to 25.18
    • Malpractice RVU 0.77 changed to 0.78
    • Malpractice GPCI 1.226 changed to 1.429

    Held through RVU17B, RVU17C, RVU17D.

  12. January 1, 2016

    RVU16A

    $1192.42changed to$1181.69

    • Conversion factor 35.9335 changed to 35.8043
    • Practice expense RVU 27.40 changed to 27.22

    Held through RVU16B, RVU16C, RVU16D.

  13. July 1, 2015

    RVU15C

    $1186.48changed to$1192.42

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  14. January 1, 2015

    RVU15A

    $1177.70changed to$1186.48

    • Conversion factor 35.8228 changed to 35.7547
    • Practice expense RVU 27.29 changed to 27.40
    • Malpractice RVU 0.64 changed to 0.77
    • Malpractice GPCI 1.165 changed to 1.226

    Held through RVU15B.

  15. January 1, 2014

    RVU14A

    $1276.51changed to$1177.70

    • Conversion factor 34.0230 changed to 35.8228
    • Practice expense RVU 31.94 changed to 27.29
    • Malpractice RVU 0.67 changed to 0.64
    • Malpractice GPCI 1.103 changed to 1.165

    Held through RVU14B, RVU14C, RVU14D.

  16. January 1, 2013

    RVU13AR

    Earliest loaded release: $1276.51

    Held through RVU13B, RVU13C, RVU13D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$1,493.27$293.85RVU26D
2026-07-01$1,493.27$293.85RVU26C
2026-04-01$1,493.27$293.85RVU26B
2026-01-01$1,493.27$293.85RVU26A
2025-10-01$1,257.45$295.79RVU25D
2025-07-01$1,257.45$295.79RVU25C
2025-04-01$1,257.45$295.79RVU25B
2025-01-01$1,257.45$295.79RVU25A
2024-10-01$1,115.96$274.12RVU24D
2024-07-01$1,115.96$274.12RVU24C
2024-04-01$1,115.96$274.12RVU24B
2024-03-09$1,115.96$274.12RVU24AR
2024-01-01$1,097.74$269.64RVU24A
2023-10-01$1,182.41$281.01RVU23D
2023-07-01$1,182.41$281.01RVU23C
2023-04-01$1,182.41$281.01RVU23B
2023-01-01$1,182.41$281.01RVU23A
2022-10-01$1,253.85$287.29RVU22D
2022-07-01$1,253.85$287.29RVU22C
2022-04-01$1,253.85$287.29RVU22B
2022-01-01$1,253.85$287.29RVU22A
2021-10-01$1,202.13$276.77RVU21D
2021-07-01$1,202.13$276.77RVU21C
2021-04-01$1,202.13$276.77RVU21B
2021-01-01$1,202.13$276.77RVU21A
2020-10-01$1,142.60$292.33RVU20D
2020-07-01$1,142.60$292.33RVU20C
2020-04-01$1,142.60$292.33RVU20B
2020-01-01$1,142.60$292.33RVU20A
2019-10-01$1,117.75$299.30RVU19D
2019-07-01$1,117.75$299.30RVU19C
2019-04-01$1,117.75$299.30RVU19B
2019-01-01$1,117.75$299.30RVU19A
2018-10-01$1,101.89$300.54RVU18D
2018-07-01$1,101.89$300.54RVU18C
2018-04-01$1,101.89$300.54RVU18B
2018-01-01$1,101.89$300.54RVU18AR1
2017-10-01$1,108.41$296.25RVU17D
2017-07-01$1,108.41$296.25RVU17C
2017-04-01$1,108.41$296.25RVU17B
2017-01-01$1,108.41$296.25RVU17A
2016-10-01$1,181.69$301.97RVU16D
2016-07-01$1,181.69$301.97RVU16C
2016-04-01$1,181.69$301.97RVU16B
2016-01-01$1,181.69$301.97RVU16A
2015-10-01$1,192.42$303.06RVU15D
2015-07-01$1,192.42$303.06RVU15C
2015-04-01$1,186.48$301.56RVU15B
2015-01-01$1,186.48$301.56RVU15A
2014-10-01$1,177.70$295.74RVU14D
2014-07-01$1,177.70$295.74RVU14C
2014-04-01$1,177.70$295.74RVU14B
2014-01-01$1,177.70$295.74RVU14A
2013-10-01$1,276.51$293.24RVU13D
2013-07-01$1,276.51$293.24RVU13C
2013-04-01$1,276.51$293.24RVU13B
2013-01-01$1,276.51$293.24RVU13AR

Price 36585 for an earlier date of service

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

Browse all communities in Montana

36585 billing questions

How is this different from 36584?

This code is for complete replacement of a port-containing peripheral central access device. Code 36584 applies to complete replacement of a PICC without a subcutaneous port.

Can this code be used for a newly placed device?

No. It describes replacement of an existing port-containing device through the existing peripheral venous route, not initial placement.

Is the 10-day postoperative care separately reportable?

Related postoperative visits during the 10-day global period are included in this procedure's payment.

Should modifier 50 be appended for bilateral access?

No. The descriptor and anatomy make bilateral adjustment inappropriate for this code.

When is assistant-at-surgery payment allowed?

Only when medical necessity for the assistant is documented. 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 36585PPRRVU2026_Oct_nonQPP.csv, line 4,527 (RVU26D)
Geographic factors for MontanaGPCI2026.csv, line 71 (RVU26D)

Open CMS sourceHow we calculate rates

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