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CPT code 15600: Flap delay, trunk site2026 Medicare rate & RVUs in Delaware

Reports staged delay or division and inset of a reconstructive flap on the trunk, rather than initial flap formation or transfer.

CMS RVU26DEffective Oct 1, 2026One payment locality66 Medicare services in 2024

In Delaware, Medicare pays $368.95 for 15600 in the office and $210.22 when it’s performed in a hospital or facility.

$368.95Office (non-facility)
$210.22Hospital or facility
−1.2%vs the national office rate ($373.42)

Check a contract rate as a % of Medicare · 15600 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 15600 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Delaware
  2. What 15600 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 15600 covers

Surgeons use 15600 for a planned reconstructive flap procedure on the trunk when the flap is surgically delayed to encourage dependable blood supply before later use, or when a previously transferred flap is divided and inset. Trunk sites include the chest, abdomen, and back. Plastic and reconstructive surgeons typically perform the work in an operating room, often as one stage of reconstruction after tissue loss or excision.

Choose the code by the flap’s trunk location and the actual delay or division-and-inset work, not by flap size or diagnosis. Document the staged plan, site, and operative steps. The 90-day global includes the day-before preoperative visit and 90 days of related postoperative care. When multiple procedures occur in the same session, the highest-valued procedure is paid in full and other procedures are subject to the standard 50% reduction. Modifier 50 is inappropriate for this code. An assistant at surgery is paid only when medical necessity is documented; 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 Delaware compares for 15600

Across 109 of 109 payment localities, the office rate for 15600 runs from $325.75 in Arkansas to $505.54 in San Benito County, CA. Delaware pays $368.95. The RVUs are the same everywhere; the geographic indexes change the dollars.

15600 in Delaware vs other payment areas
  1. Delaware · this page$368.95
  2. Los Angeles, CA · California$426.05+$57.10
  3. Washington, DC area · District of Columbia$430.97+$62.02
  4. Miami, FL · Florida$404.44+$35.49
  5. Chicago, IL · Illinois$391.36+$22.41
  6. Manhattan, NY · New York$432.74+$63.79
  7. Alaska · Alaska$419.82+$50.87

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

Every other payment area

15600 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama$331.11$190.53
ArkansasArkansas$325.75$187.74
ArizonaArizona$362.48$206.80
Bakersfield, CACalifornia$398.21$222.13
Chico, CACalifornia$397.18$221.10
El Centro, CACalifornia$397.24$221.16
Fresno, CACalifornia$397.18$221.10
Hanford, CACalifornia$397.18$221.10

15600 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.

$325.75

$451.36

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

View every state and territory as a table
15600 office rate range by state
State / territoryOffice rate rangeLocalities
AK$419.821
AL$331.111
AR$325.751
AZ$362.481
CA$397.18–$505.5429
CO$390.421
CT$400.091
DC$430.971
DE$368.951
FL$366.63–$404.443
GA$343.87–$380.832
GU$408.721
HI$408.721
IA$340.841
ID$343.261
IL$354.66–$391.404
IN$345.491
KS$338.911
KY$339.561
LA$338.91–$357.662
MA$387.63–$432.092
MD$376.61–$430.973
ME$345.10–$366.202
MI$349.30–$371.552
MN$373.291
MO$332.31–$359.263
MS$329.111
MT$373.401
NC$349.161
ND$366.081
NE$342.971
NH$384.001
NJ$404.43–$425.682
NM$351.371
NV$371.651
NY$354.97–$444.075
OH$347.801
OK$339.041
OR$368.57–$404.122
PA$348.50–$389.112
PR$376.491
RI$383.091
SC$349.101
SD$365.221
TN$340.801
TX$345.94–$389.298
UT$354.431
VA$364.76–$430.972
VI$376.491
VT$364.361
WA$386.99–$441.532
WI$352.451
WV$340.031
WY$370.211

See 15600 in every payment locality

How the 15600 rate is calculated

Each of 15600’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 · 15600

RVUs × geographic indexes × conversion factor

Office or facility?

Work1.96

1.96 RVUs× 1.000 GPCI

Practice expense8.85

8.85 RVUs× 1.000 GPCI

Malpractice0.37

0.37 RVUs× 1.000 GPCI

Adjusted RVUs

11.1800

Conversion factor

$33.4009

Medicare rate

$373.42

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

The exact Delaware inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

1,524

Code
15600
Physician work
1.96
Practice expense
8.85
Malpractice
0.37

GPCI2026.csv

40

Locality
Delaware
Physician work
1.005
Practice expense
0.988
Malpractice
0.899
Office calculation for 15600 in Delaware
ComponentRVULocality factorAdjusted
Physician work1.96× 1.0051.9698
Practice expense8.85× 0.9888.7438
Malpractice0.37× 0.8990.3326
Total RVUs11.0462
Conversion factor× 33.4009

Office rate, Delaware$368.95

Office: (1.96 × 1.005 + 8.85 × 0.988 + 0.37 × 0.899) × $33.4009 = $368.95

Facility: (1.96 × 1.005 + 4.04 × 0.988 + 0.37 × 0.899) × $33.4009 = $210.22

Open 15600 in the RVU calculator

Payment rules and modifiers for 15600

15600 has a 90-day global period: related visits in that window are included in the surgery payment.

CMS payment indicators · 15600

Flap delay, trunk site

RuleCMS valueWhat it means
Global period090Major surgery: the day before, the day of, and 90 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)0.10/0.71/0.19Share of the payment for pre-op, the procedure itself, and post-op care.

Global surgery period · 15600

Flap delay, trunk site

90-day global period ends

Dec 30, 2026

Covers Sep 30, 2026 through Dec 30, 2026 (92 days, including the day before surgery).

Visit on Oct 31, 2026

Day 30 of the 90-day post-op period: related follow-up care is included in the surgical payment.

  • 24Unrelated E/M visit by the same physician
  • 79Unrelated procedure (starts its own global period)
  • 58Staged, more extensive, or therapy procedure that was planned
  • 78Unplanned return to the operating room for a related complication
SurgeryVisit
Sep 23, 2026Jan 10, 2027

Pre-op dayGlobal period

What modifiers do to the payment

Modifier 51 · payment effect

With and without the modifier

15600 without 51 · national office

$373.42

Flap delay, trunk site

15600-51 · Second procedure: 50%

$186.71

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 15600

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

Codes related to 15600
CodeHow it relatesOffice range, Delaware
Same family
15610Flap delay, arms or legsSame flap-delay or division-and-inset family for an arm or leg site.$386.91
15620Flap delay, face, neck, hand, foot, other sitesSame flap-delay or division-and-inset family for specified face, neck, axilla, genital, hand, or foot sites.$458.40
15630Flap staging, eyelid, nose, ear, or lipSame flap-delay or division-and-inset family for eyelid, nose, ear, or lip sites.$464.97
Used instead
15650Pedicle flap transfer, distant donor-to-recipient transferDescribes transfer of a skin pedicle flap, rather than trunk flap delay or division and inset.$582.51

How 15600 has changed in Delaware

15600 · Office / nonfacility

$368.95

Effective 2026-10-01

The base rate is $44.61 higher than on 2025-10-01, moving from $324.34 to $368.95 (13.8%).

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

    $324.34changed to$368.95

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 2.01 changed to 1.96
    • Practice expense RVU 7.70 changed to 8.85
    • Malpractice RVU 0.38 changed to 0.37
    • Work GPCI 1.009 changed to 1.005
    • Practice expense GPCI 0.992 changed to 0.988
    • Malpractice GPCI 0.949 changed to 0.899

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    $338.08changed to$324.34

    • Conversion factor 33.2875 changed to 32.3465
    • Practice expense RVU 7.84 changed to 7.70
    • Malpractice RVU 0.37 changed to 0.38

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $332.57changed to$338.08

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $346.54changed to$332.57

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense RVU 7.81 changed to 7.84
    • Malpractice RVU 0.36 changed to 0.37
    • Work GPCI 1.007 changed to 1.009
    • Practice expense GPCI 1.007 changed to 0.992
    • Malpractice GPCI 0.938 changed to 0.949

  5. January 1, 2023

    RVU23A

    $354.11changed to$346.54

    • Conversion factor 34.6062 changed to 33.8872
    • Practice expense RVU 7.70 changed to 7.81
    • Malpractice RVU 0.37 changed to 0.36
    • Work GPCI 1.005 changed to 1.007
    • Practice expense GPCI 1.022 changed to 1.007
    • Malpractice GPCI 0.927 changed to 0.938

    Held through RVU23B, RVU23C, RVU23D.

  6. January 1, 2022

    RVU22A

    $354.94changed to$354.11

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 7.65 changed to 7.70
    • Malpractice RVU 0.36 changed to 0.37

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $347.88changed to$354.94

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 7.11 changed to 7.65
    • Malpractice RVU 0.35 changed to 0.36
    • Work GPCI 1.006 changed to 1.005
    • Practice expense GPCI 1.021 changed to 1.022
    • Malpractice GPCI 1.023 changed to 0.927

    Held through RVU21B, RVU21C, RVU21D.

  8. January 1, 2020

    RVU20A

    $341.89changed to$347.88

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense RVU 6.95 changed to 7.11
    • Malpractice RVU 0.34 changed to 0.35
    • Work GPCI 1.007 changed to 1.006
    • Practice expense GPCI 1.019 changed to 1.021
    • Malpractice GPCI 1.119 changed to 1.023

    Held through RVU20B, RVU20C, RVU20D.

  9. January 1, 2019

    RVU19A

    $338.58changed to$341.89

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 6.87 changed to 6.95

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $336.10changed to$338.58

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense RVU 6.78 changed to 6.87
    • Malpractice RVU 0.35 changed to 0.34
    • Work GPCI 1.010 changed to 1.007
    • Practice expense GPCI 1.025 changed to 1.019
    • Malpractice GPCI 1.101 changed to 1.119

    Held through RVU18B, RVU18C, RVU18D.

  11. January 1, 2017

    RVU17A

    $336.29changed to$336.10

    • Conversion factor 35.8043 changed to 35.8887
    • Malpractice RVU 0.34 changed to 0.35
    • Work GPCI 1.012 changed to 1.010
    • Practice expense GPCI 1.031 changed to 1.025
    • Malpractice GPCI 1.083 changed to 1.101

    Held through RVU17B, RVU17C, RVU17D.

  12. January 1, 2016

    RVU16A

    $338.97changed to$336.29

    • Conversion factor 35.9335 changed to 35.8043
    • Practice expense RVU 6.83 changed to 6.78
    • Malpractice RVU 0.33 changed to 0.34

    Held through RVU16B, RVU16C, RVU16D.

  13. July 1, 2015

    RVU15C

    $337.28changed to$338.97

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  14. January 1, 2015

    RVU15A

    $330.72changed to$337.28

    • Conversion factor 35.8228 changed to 35.7547
    • Practice expense RVU 6.63 changed to 6.83
    • Malpractice RVU 0.36 changed to 0.33
    • Practice expense GPCI 1.038 changed to 1.031
    • Malpractice GPCI 0.878 changed to 1.083

    Held through RVU15B.

  15. January 1, 2014

    RVU14A

    $343.58changed to$330.72

    • Conversion factor 34.0230 changed to 35.8228
    • Practice expense RVU 7.48 changed to 6.63
    • Malpractice RVU 0.38 changed to 0.36
    • Practice expense GPCI 1.044 changed to 1.038
    • Malpractice GPCI 0.672 changed to 0.878

    Held through RVU14B, RVU14C, RVU14D.

  16. January 1, 2013

    RVU13AR

    Earliest loaded release: $343.58

    Held through RVU13B, RVU13C, RVU13D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$368.95$210.22RVU26D
2026-07-01$368.95$210.22RVU26C
2026-04-01$368.95$210.22RVU26B
2026-01-01$368.95$210.22RVU26A
2025-10-01$324.34$207.22RVU25D
2025-07-01$324.34$207.22RVU25C
2025-04-01$324.34$207.22RVU25B
2025-01-01$324.34$207.22RVU25A
2024-10-01$338.08$212.93RVU24D
2024-07-01$338.08$212.93RVU24C
2024-04-01$338.08$212.93RVU24B
2024-03-09$338.08$212.93RVU24AR
2024-01-01$332.57$209.46RVU24A
2023-10-01$346.54$215.51RVU23D
2023-07-01$346.54$215.51RVU23C
2023-04-01$346.54$215.51RVU23B
2023-01-01$346.54$215.51RVU23A
2022-10-01$354.11$217.59RVU22D
2022-07-01$354.11$217.59RVU22C
2022-04-01$354.11$217.59RVU22B
2022-01-01$354.11$217.59RVU22A
2021-10-01$354.94$216.93RVU21D
2021-07-01$354.94$216.93RVU21C
2021-04-01$354.94$216.93RVU21B
2021-01-01$354.94$216.93RVU21A
2020-10-01$347.88$218.55RVU20D
2020-07-01$347.88$218.55RVU20C
2020-04-01$347.88$218.55RVU20B
2020-01-01$347.88$218.55RVU20A
2019-10-01$341.89$217.39RVU19D
2019-07-01$341.89$217.39RVU19C
2019-04-01$341.89$217.39RVU19B
2019-01-01$341.89$217.39RVU19A
2018-10-01$338.58$217.89RVU18D
2018-07-01$338.58$217.89RVU18C
2018-04-01$338.58$217.89RVU18B
2018-01-01$338.58$217.89RVU18AR1
2017-10-01$336.10$217.65RVU17D
2017-07-01$336.10$217.65RVU17C
2017-04-01$336.10$217.65RVU17B
2017-01-01$336.10$217.65RVU17A
2016-10-01$336.29$217.80RVU16D
2016-07-01$336.29$217.80RVU16C
2016-04-01$336.29$217.80RVU16B
2016-01-01$336.29$217.80RVU16A
2015-10-01$338.97$218.57RVU15D
2015-07-01$338.97$218.57RVU15C
2015-04-01$337.28$217.48RVU15B
2015-01-01$337.28$217.48RVU15A
2014-10-01$330.72$214.33RVU14D
2014-07-01$330.72$214.33RVU14C
2014-04-01$330.72$214.33RVU14B
2014-01-01$330.72$214.33RVU14A
2013-10-01$343.58$216.42RVU13D
2013-07-01$343.58$216.42RVU13C
2013-04-01$343.58$216.42RVU13B
2013-01-01$343.58$216.42RVU13AR

Price 15600 for an earlier date of service

Where the Delaware rate applies

Delaware is a Medicare payment area, not a city. Our Census mapping connects it to 79 cities and communities in Delaware. Some span more than one payment area; confirm with the service ZIP.

  • Arden
  • Ardencroft
  • Ardentown
  • Bear
  • Bellefonte
  • Bethany Beach
  • Bethel
  • Blades

Browse all communities in Delaware

15600 billing questions

When should I choose 15600 instead of a flap-transfer code?

Use 15600 for delay of a trunk flap or its division and inset. A transfer code describes flap transfer work rather than these stages.

Does 15600 include the later flap transfer?

No. The code describes delay or division and inset on the trunk; the later transfer is a distinct operative stage.

Can I append modifier 50 for flaps on both sides of the trunk?

No. CMS identifies the bilateral adjustment as inappropriate for this descriptor and anatomy.

What documentation supports reporting 15600?

Record the trunk site, whether the surgeon performed a delay or division and inset, and the operative steps supporting that stage of reconstruction.

How does the global period affect postoperative visits?

The 90-day global includes the day-before preoperative visit and 90 days of related postoperative care.

Can an assistant or another surgeon be reported?

Assistant-at-surgery payment requires documented medical necessity. 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 15600PPRRVU2026_Oct_nonQPP.csv, line 1,524 (RVU26D)
Geographic factors for DelawareGPCI2026.csv, line 40 (RVU26D)

Open CMS sourceHow we calculate rates

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