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CPT code 36591: Port blood draw, implantable venous access device2026 Medicare rate & RVUs in Washington, DC area

Report 36591 when blood is collected through a completely implanted venous access device, such as an oncology port, rather than a PICC.

CMS RVU26DEffective Oct 1, 2026One payment locality51K Medicare services in 2024

In Washington, DC area, Medicare pays $35.78 for 36591 in the office.

$35.78Office (non-facility)
Not available in this settingHospital or facility
+17.7%vs the national office rate ($30.39)

Check a contract rate as a % of Medicare · 36591 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 36591 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Washington, DC area
  2. What 36591 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 36591 covers

Report 36591 when blood is withdrawn for specimen testing through a completely implanted venous access device, such as a chest port used for oncology treatment. The service is collection through the port, not catheter placement or removal and not laboratory analysis. Nursing staff commonly access ports in oncology clinics and infusion centers under practice protocols; documentation should identify the implanted device and confirm that a specimen was obtained through it.

Use 36592 for blood collection from a PICC instead. Document the device type and collection method, and report ordered laboratory analyses separately. CMS classifies 36591 as technical-component-only, with interpretation covered by a separate code. It is an injection or minor service payable only when no other physician service is billed that day; when another physician service is billed on the same date, separate payment for 36591 is not expected.

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 Washington, DC area compares for 36591

Across 109 of 109 payment localities, the office rate for 36591 runs from $25.99 in Arkansas to $43.53 in San Benito County, CA. Washington, DC area pays $35.78. The RVUs are the same everywhere; the geographic indexes change the dollars.

36591 in Washington, DC area vs other payment areas
  1. Washington, DC area · this page$35.78
  2. Los Angeles, CA · California$35.78
  3. Miami, FL · Florida$32.14−$3.64
  4. Chicago, IL · Illinois$30.98−$4.80
  5. Manhattan, NY · New York$35.46−$0.32
  6. Alaska · Alaska$32.20−$3.58
  7. Alabama · Alabama$26.49−$9.29

Other areas in District of Columbia first, then benchmark localities. Bars start at $0.

Every other payment area

36591 in every other Medicare payment locality
Payment localityOfficeFacility
ArkansasArkansas$25.99—
ArizonaArizona$29.41—
Bakersfield, CACalifornia$33.15—
Chico, CACalifornia$33.13—
El Centro, CACalifornia$33.13—
Fresno, CACalifornia$33.13—
Hanford, CACalifornia$33.13—
Madera, CACalifornia$33.13—

36591 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.

$25.99

$38.33

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

View every state and territory as a table
36591 office rate range by state
State / territoryOffice rate rangeLocalities
AK$32.201
AL$26.491
AR$25.991
AZ$29.411
CA$33.13–$43.5329
CO$32.251
CT$32.781
DC$35.781
DE$30.001
FL$29.24–$32.143
GA$27.21–$30.942
GU$34.371
HI$34.371
IA$27.641
ID$27.811
IL$27.97–$31.464
IN$28.031
KS$27.341
KY$27.031
LA$26.92–$28.672
MA$31.92–$36.192
MD$30.73–$35.783
ME$27.86–$30.002
MI$27.82–$29.572
MN$31.031
MO$26.24–$28.953
MS$26.131
MT$30.391
NC$28.261
ND$30.201
NE$27.871
NH$31.591
NJ$33.19–$35.232
NM$27.971
NV$30.371
NY$28.79–$36.365
OH$27.781
OK$27.101
OR$30.18–$33.652
PA$27.91–$31.692
PR$30.721
RI$31.351
SC$28.061
SD$30.171
TN$27.501
TX$27.67–$32.108
UT$28.561
VA$29.79–$35.782
VI$30.721
VT$29.931
WA$31.91–$37.162
WI$28.901
WV$26.601
WY$30.311

See 36591 in every payment locality

How the 36591 rate is calculated

Each of 36591’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 · 36591

RVUs × geographic indexes × conversion factor

Office or facility?

Work0.00

0.00 RVUs× 1.000 GPCI

Practice expense0.90

0.90 RVUs× 1.000 GPCI

Malpractice0.01

0.01 RVUs× 1.000 GPCI

Adjusted RVUs

0.9100

Conversion factor

$33.4009

Medicare rate

$30.39

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

The exact Washington, DC area inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

4,530

Code
36591
Physician work
0.00
Practice expense
0.90
Malpractice
0.01

GPCI2026.csv

39

Locality
Washington, DC area
Physician work
1.054
Practice expense
1.178
Malpractice
1.113
Office calculation for 36591 in Washington, DC area
ComponentRVULocality factorAdjusted
Physician work0.00× 1.0540.0000
Practice expense0.90× 1.1781.0602
Malpractice0.01× 1.1130.0111
Total RVUs1.0713
Conversion factor× 33.4009

Office rate, Washington, DC area$35.78

Office: (0 × 1.054 + 0.9 × 1.178 + 0.01 × 1.113) × $33.4009 = $35.78

Open 36591 in the RVU calculator

Payment rules and modifiers for 36591

The CMS indicators that decide how 36591 is paid alongside other services.

CMS payment indicators · 36591

Port blood draw, implantable venous access device

RuleCMS valueWhat it means
Global periodXXXThe global surgery concept doesn’t apply.
Multiple procedures0No multiple-procedure reduction.
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/technical3Technical component only.

Codes related to 36591

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

Codes related to 36591
CodeHow it relatesOffice range, Washington, DC area
Used instead
36592Catheter blood collection, established venous catheterUse for blood collection from a PICC rather than a completely implanted venous access device.$39.72
96523Port irrigation, implanted drug-delivery access deviceUse for irrigation of an implanted venous access device without specimen collection when irrigation is the only service performed.$30.50
Often billed with
85025Complete CBC, automated differentialA blood count analysis may be reported for the collected specimen; 36591 payment remains subject to its same-day restriction.$7.77
80053Metabolic panel, fourteen blood chemistry testsA metabolic panel may be reported for the collected specimen; 36591 payment remains subject to its same-day restriction.$10.56

How 36591 has changed in Washington, DC area

36591 · Office / nonfacility

$35.78

Effective 2026-10-01

The base rate is $3.79 higher than on 2025-10-01, moving from $31.99 to $35.78 (11.8%).

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

    $31.99changed to$35.78

    • Conversion factor 32.3465 changed to 33.4009
    • Practice expense RVU 0.82 changed to 0.90
    • Work GPCI 1.057 changed to 1.054
    • Practice expense GPCI 1.192 changed to 1.178
    • Malpractice GPCI 1.168 changed to 1.113

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    $32.93changed to$31.99

    • Conversion factor 33.2875 changed to 32.3465

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $32.39changed to$32.93

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $32.92changed to$32.39

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense RVU 0.79 changed to 0.82
    • Work GPCI 1.056 changed to 1.057
    • Practice expense GPCI 1.214 changed to 1.192
    • Malpractice GPCI 1.231 changed to 1.168

  5. January 1, 2023

    RVU23A

    $33.81changed to$32.92

    • Conversion factor 34.6062 changed to 33.8872
    • Practice expense RVU 0.78 changed to 0.79
    • Work GPCI 1.054 changed to 1.056
    • Practice expense GPCI 1.236 changed to 1.214
    • Malpractice GPCI 1.294 changed to 1.231

    Held through RVU23B, RVU23C, RVU23D.

  6. January 1, 2022

    RVU22A

    $33.23changed to$33.81

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 0.76 changed to 0.78

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $30.87changed to$33.23

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 0.69 changed to 0.76
    • Work GPCI 1.049 changed to 1.054
    • Practice expense GPCI 1.221 changed to 1.236
    • Malpractice GPCI 1.277 changed to 1.294

    Held through RVU21B, RVU21C, RVU21D.

  8. January 1, 2020

    RVU20A

    $29.98changed to$30.87

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense RVU 0.68 changed to 0.69
    • Work GPCI 1.045 changed to 1.049
    • Practice expense GPCI 1.205 changed to 1.221
    • Malpractice GPCI 1.261 changed to 1.277

    Held through RVU20B, RVU20C, RVU20D.

  9. January 1, 2019

    RVU19A

    $29.52changed to$29.98

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 0.67 changed to 0.68

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $29.00changed to$29.52

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense RVU 0.66 changed to 0.67
    • Work GPCI 1.048 changed to 1.045
    • Malpractice GPCI 1.271 changed to 1.261

    Held through RVU18B, RVU18C, RVU18D.

  11. January 1, 2017

    RVU17A

    $28.50changed to$29.00

    • Conversion factor 35.8043 changed to 35.8887
    • Practice expense RVU 0.65 changed to 0.66
    • Work GPCI 1.051 changed to 1.048
    • Malpractice GPCI 1.280 changed to 1.271

    Held through RVU17B, RVU17C, RVU17D.

  12. January 1, 2016

    RVU16A

    $28.60changed to$28.50

    • Conversion factor 35.9335 changed to 35.8043

    Held through RVU16B, RVU16C, RVU16D.

  13. July 1, 2015

    RVU15C

    $28.46changed to$28.60

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  14. January 1, 2015

    RVU15A

    $27.99changed to$28.46

    • Conversion factor 35.8228 changed to 35.7547
    • Practice expense RVU 0.64 changed to 0.65
    • Work GPCI 1.050 changed to 1.051
    • Practice expense GPCI 1.202 changed to 1.205
    • Malpractice GPCI 1.205 changed to 1.280

    Held through RVU15B.

  15. January 1, 2014

    RVU14A

    $28.51changed to$27.99

    • Conversion factor 34.0230 changed to 35.8228
    • Practice expense RVU 0.69 changed to 0.64
    • Work GPCI 1.049 changed to 1.050
    • Practice expense GPCI 1.198 changed to 1.202
    • Malpractice GPCI 1.130 changed to 1.205

    Held through RVU14B, RVU14C, RVU14D.

  16. January 1, 2013

    RVU13AR

    Earliest loaded release: $28.51

    Held through RVU13B, RVU13C, RVU13D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$35.78Not available in this settingRVU26D
2026-07-01$35.78Not available in this settingRVU26C
2026-04-01$35.78Not available in this settingRVU26B
2026-01-01$35.78Not available in this settingRVU26A
2025-10-01$31.99Not available in this settingRVU25D
2025-07-01$31.99Not available in this settingRVU25C
2025-04-01$31.99Not available in this settingRVU25B
2025-01-01$31.99Not available in this settingRVU25A
2024-10-01$32.93Not available in this settingRVU24D
2024-07-01$32.93Not available in this settingRVU24C
2024-04-01$32.93Not available in this settingRVU24B
2024-03-09$32.93Not available in this settingRVU24AR
2024-01-01$32.39Not available in this settingRVU24A
2023-10-01$32.92Not available in this settingRVU23D
2023-07-01$32.92Not available in this settingRVU23C
2023-04-01$32.92Not available in this settingRVU23B
2023-01-01$32.92Not available in this settingRVU23A
2022-10-01$33.81Not available in this settingRVU22D
2022-07-01$33.81Not available in this settingRVU22C
2022-04-01$33.81Not available in this settingRVU22B
2022-01-01$33.81Not available in this settingRVU22A
2021-10-01$33.23Not available in this settingRVU21D
2021-07-01$33.23Not available in this settingRVU21C
2021-04-01$33.23Not available in this settingRVU21B
2021-01-01$33.23Not available in this settingRVU21A
2020-10-01$30.87Not available in this settingRVU20D
2020-07-01$30.87Not available in this settingRVU20C
2020-04-01$30.87Not available in this settingRVU20B
2020-01-01$30.87Not available in this settingRVU20A
2019-10-01$29.98Not available in this settingRVU19D
2019-07-01$29.98Not available in this settingRVU19C
2019-04-01$29.98Not available in this settingRVU19B
2019-01-01$29.98Not available in this settingRVU19A
2018-10-01$29.52Not available in this settingRVU18D
2018-07-01$29.52Not available in this settingRVU18C
2018-04-01$29.52Not available in this settingRVU18B
2018-01-01$29.52Not available in this settingRVU18AR1
2017-10-01$29.00Not available in this settingRVU17D
2017-07-01$29.00Not available in this settingRVU17C
2017-04-01$29.00Not available in this settingRVU17B
2017-01-01$29.00Not available in this settingRVU17A
2016-10-01$28.50Not available in this settingRVU16D
2016-07-01$28.50Not available in this settingRVU16C
2016-04-01$28.50Not available in this settingRVU16B
2016-01-01$28.50Not available in this settingRVU16A
2015-10-01$28.60Not available in this settingRVU15D
2015-07-01$28.60Not available in this settingRVU15C
2015-04-01$28.46Not available in this settingRVU15B
2015-01-01$28.46Not available in this settingRVU15A
2014-10-01$27.99Not available in this settingRVU14D
2014-07-01$27.99Not available in this settingRVU14C
2014-04-01$27.99Not available in this settingRVU14B
2014-01-01$27.99Not available in this settingRVU14A
2013-10-01$28.51Not available in this settingRVU13D
2013-07-01$28.51Not available in this settingRVU13C
2013-04-01$28.51Not available in this settingRVU13B
2013-01-01$28.51Not available in this settingRVU13AR

Price 36591 for an earlier date of service

Where the Washington, DC area rate applies

Washington, DC area is a Medicare payment area, not a city. Our Census mapping connects it to 1 cities and communities in District of Columbia. Some span more than one payment area; confirm with the service ZIP.

  • Washington

Browse all communities in District of Columbia

36591 billing questions

When should 36591 be used instead of 36592?

Use 36591 for collection through a completely implanted venous access device, such as an implanted port. Use 36592 for collection from a PICC.

Does 36591 include the laboratory tests?

No. It reports specimen collection through the implanted device; report ordered laboratory analyses separately.

Can 36591 be reported for a port flush without a blood specimen?

No. 36591 describes collection of a blood specimen. Irrigation of an implanted venous access device without specimen collection is represented by 96523 when irrigation is the only service performed.

Can 36591 receive separate payment with an office visit on the same date?

CMS lists this as an injection or minor service payable only when no other physician service is billed that day. A same-day physician service means separate payment for 36591 is not expected.

What documentation supports reporting 36591?

Document that the device was a completely implanted venous access device and that blood was obtained through it for specimen testing.

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 36591PPRRVU2026_Oct_nonQPP.csv, line 4,530 (RVU26D)
Geographic factors for Washington, DC areaGPCI2026.csv, line 39 (RVU26D)

Open CMS sourceHow we calculate rates

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