CPT code 31591: Laryngoplasty, unilateral medialization2026 Medicare rate & RVUs in Delaware

Reports framework surgery that moves one vocal fold toward the midline, commonly to improve glottic closure in unilateral vocal fold paralysis.

CMS RVU26DEffective Oct 1, 2026One payment locality1.1K Medicare services in 2024

In Delaware, Medicare pays $989.46 for 31591 in a facility. There’s no office rate.

Not available in this settingOffice (non-facility)
$989.46Hospital or facility

Check a contract rate as a % of Medicare · 31591 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 31591 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Delaware
  2. What 31591 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 31591 covers

An otolaryngologist or laryngologist performs this framework procedure to move one vocal fold toward the midline and improve glottic closure. A typical indication is unilateral vocal fold paralysis or immobility causing a persistent voice or airway-protection problem. In a type I thyroplasty approach, the surgeon works through the neck and adjusts the thyroid cartilage framework, commonly placing an implant to medialize the fold. The procedure is generally performed in an operating room.

Report the code for unilateral medialization surgery, not for endoscopic injection augmentation or diagnostic examination alone. The operative report should identify the treated side, the indication, and the framework work performed. CMS assigns a 90-day global period: the day-before preoperative visit and 90 days of related postoperative care are included. For multiple procedures in one session, the highest-valued procedure is paid in full and the others at 50%. Bilateral reporting with modifier 50 is paid at 150%. Assistant-at-surgery and co-surgeon payment require the documentation described in CMS rules; team surgery is 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 31591

Across 109 of 109 payment localities, the facility rate for 31591 runs from $898.82 in Arkansas to $1,236.55 in San Benito County, CA. Delaware pays $989.46. The RVUs are the same everywhere; the geographic indexes change the dollars.

31591 in Delaware vs other payment areas
  1. Delaware · this page$989.46
  2. Los Angeles, CA · California$1,086.47+$97.01
  3. Washington, DC area · District of Columbia$1,118.69+$129.23
  4. Miami, FL · Florida$1,118.49+$129.03
  5. Chicago, IL · Illinois$1,088.73+$99.27
  6. Manhattan, NY · New York$1,145.70+$156.24
  7. Alaska · Alaska$1,223.61+$234.15

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

Every other payment area

31591 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama—$910.00
ArkansasArkansas—$898.82
ArizonaArizona—$975.10
Bakersfield, CACalifornia—$1,030.27
Chico, CACalifornia—$1,024.68
El Centro, CACalifornia—$1,025.00
Fresno, CACalifornia—$1,024.68
Hanford, CACalifornia—$1,024.68

31591 rates by state

Office rate range in each state. Select a state to see its payment localities.

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Local rates. Clear comparisons.

Hover or focus a tile to see its rate range. Select it to open the state’s fee schedule.

View every state and territory as a table
31591 office rate range by state
State / territoryOffice rate rangeLocalities
AKNo published base rate1
ALNo published base rate1
ARNo published base rate1
AZNo published base rate1
CANo published base rate29
CONo published base rate1
CTNo published base rate1
DCNo published base rate1
DENo published base rate1
FLNo published base rate3
GANo published base rate2
GUNo published base rate1
HINo published base rate1
IANo published base rate1
IDNo published base rate1
ILNo published base rate4
INNo published base rate1
KSNo published base rate1
KYNo published base rate1
LANo published base rate2
MANo published base rate2
MDNo published base rate3
MENo published base rate2
MINo published base rate2
MNNo published base rate1
MONo published base rate3
MSNo published base rate1
MTNo published base rate1
NCNo published base rate1
NDNo published base rate1
NENo published base rate1
NHNo published base rate1
NJNo published base rate2
NMNo published base rate1
NVNo published base rate1
NYNo published base rate5
OHNo published base rate1
OKNo published base rate1
ORNo published base rate2
PANo published base rate2
PRNo published base rate1
RINo published base rate1
SCNo published base rate1
SDNo published base rate1
TNNo published base rate1
TXNo published base rate8
UTNo published base rate1
VANo published base rate2
VINo published base rate1
VTNo published base rate1
WANo published base rate2
WINo published base rate1
WVNo published base rate1
WYNo published base rate1

See 31591 in every payment locality

How the 31591 rate is calculated

Each of 31591’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 · 31591

RVUs × geographic indexes × conversion factor

Office or facility?

Work13.22

13.22 RVUs× 1.000 GPCI

Practice expense14.78

14.78 RVUs× 1.000 GPCI

Malpractice1.93

1.93 RVUs× 1.000 GPCI

Adjusted RVUs

29.9300

Conversion factor

$33.4009

Medicare rate

$999.69

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

3,617

Code
31591
Physician work
13.22
Practice expense
14.78
Malpractice
1.93

GPCI2026.csv

40

Locality
Delaware
Physician work
1.005
Practice expense
0.988
Malpractice
0.899
Facility calculation for 31591 in Delaware
ComponentRVULocality factorAdjusted
Physician work13.22× 1.00513.2861
Practice expense14.78× 0.98814.6026
Malpractice1.93× 0.8991.7351
Total RVUs29.6238
Conversion factor× 33.4009

Facility rate, Delaware$989.46

Facility: (13.22 × 1.005 + 14.78 × 0.988 + 1.93 × 0.899) × $33.4009 = $989.46

Open 31591 in the RVU calculator

Payment rules and modifiers for 31591

31591 has a 90-day global period: related visits in that window are included in the surgery payment.

CMS payment indicators · 31591

Laryngoplasty, unilateral medialization

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)1Bilateral with modifier 50 pays 150% of the fee schedule amount.
Assistant at surgery (80/81/82/AS)0Not paid without supporting documentation.
Co-surgeons (62)1Permitted with supporting documentation.
Team surgery (66)0Not permitted.
Professional/technical0Physician service: no professional/technical split.
Split (54/55/56)0.10/0.76/0.14Share of the payment for pre-op, the procedure itself, and post-op care.

Global surgery period · 31591

Laryngoplasty, unilateral medialization

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 50 · payment effect

With and without the modifier

31591 without 50 · national facility

$999.69

Laryngoplasty, unilateral medialization

31591-50 · Bilateral: 150%

$1,499.54

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

How 31591 has changed in Delaware

31591 · Office / nonfacility

Rate unavailable

Effective 2026-10-01

A rate is unavailable in one of these releases, so a change cannot be calculated.

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, 2017

    RVU17A

    No ratechanged toNo rate

    Held through RVU17B, RVU17C, RVU17D, RVU18AR1, RVU18B, RVU18C, RVU18D, RVU19A, RVU19B, RVU19C, RVU19D, RVU20A, RVU20B, RVU20C, RVU20D, RVU21A, RVU21B, RVU21C, RVU21D, RVU22A, RVU22B, RVU22C, RVU22D, RVU23A, RVU23B, RVU23C, RVU23D, RVU24A, RVU24AR, RVU24B, RVU24C, RVU24D, RVU25A, RVU25B, RVU25C, RVU25D, RVU26A, RVU26B, RVU26C, RVU26D.

  2. January 1, 2013

    RVU13AR

    Earliest loaded release: No rate

    Held through RVU13B, RVU13C, RVU13D, RVU14A, RVU14B, RVU14C, RVU14D, RVU15A, RVU15B, RVU15C, RVU15D, RVU16A, RVU16B, RVU16C, RVU16D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01Not available in this setting$989.46RVU26D
2026-07-01Not available in this setting$989.46RVU26C
2026-04-01Not available in this setting$989.46RVU26B
2026-01-01Not available in this setting$989.46RVU26A
2025-10-01Not available in this setting$1,072.92RVU25D
2025-07-01Not available in this setting$1,072.92RVU25C
2025-04-01Not available in this setting$1,072.92RVU25B
2025-01-01Not available in this setting$1,072.92RVU25A
2024-10-01Not available in this setting$1,100.78RVU24D
2024-07-01Not available in this setting$1,100.78RVU24C
2024-04-01Not available in this setting$1,100.78RVU24B
2024-03-09Not available in this setting$1,100.78RVU24AR
2024-01-01Not available in this setting$1,082.82RVU24A
2023-10-01Not available in this setting$1,128.05RVU23D
2023-07-01Not available in this setting$1,128.05RVU23C
2023-04-01Not available in this setting$1,128.05RVU23B
2023-01-01Not available in this setting$1,128.05RVU23A
2022-10-01Not available in this setting$1,146.76RVU22D
2022-07-01Not available in this setting$1,146.76RVU22C
2022-04-01Not available in this setting$1,146.76RVU22B
2022-01-01Not available in this setting$1,146.76RVU22A
2021-10-01Not available in this setting$1,130.08RVU21D
2021-07-01Not available in this setting$1,130.08RVU21C
2021-04-01Not available in this setting$1,130.08RVU21B
2021-01-01Not available in this setting$1,130.08RVU21A
2020-10-01Not available in this setting$1,126.22RVU20D
2020-07-01Not available in this setting$1,126.22RVU20C
2020-04-01Not available in this setting$1,126.22RVU20B
2020-01-01Not available in this setting$1,126.22RVU20A
2019-10-01Not available in this setting$1,105.71RVU19D
2019-07-01Not available in this setting$1,105.71RVU19C
2019-04-01Not available in this setting$1,105.71RVU19B
2019-01-01Not available in this setting$1,105.71RVU19A
2018-10-01Not available in this setting$1,084.98RVU18D
2018-07-01Not available in this setting$1,084.98RVU18C
2018-04-01Not available in this setting$1,084.98RVU18B
2018-01-01Not available in this setting$1,084.98RVU18AR1
2017-10-01Not available in this setting$1,095.81RVU17D
2017-07-01Not available in this setting$1,095.81RVU17C
2017-04-01Not available in this setting$1,095.81RVU17B
2017-01-01Not available in this setting$1,095.81RVU17A
2016-10-01Not in this releaseNot in this releaseRVU16D
2016-07-01Not in this releaseNot in this releaseRVU16C
2016-04-01Not in this releaseNot in this releaseRVU16B
2016-01-01Not in this releaseNot in this releaseRVU16A
2015-10-01Not in this releaseNot in this releaseRVU15D
2015-07-01Not in this releaseNot in this releaseRVU15C
2015-04-01Not in this releaseNot in this releaseRVU15B
2015-01-01Not in this releaseNot in this releaseRVU15A
2014-10-01Not in this releaseNot in this releaseRVU14D
2014-07-01Not in this releaseNot in this releaseRVU14C
2014-04-01Not in this releaseNot in this releaseRVU14B
2014-01-01Not in this releaseNot in this releaseRVU14A
2013-10-01Not in this releaseNot in this releaseRVU13D
2013-07-01Not in this releaseNot in this releaseRVU13C
2013-04-01Not in this releaseNot in this releaseRVU13B
2013-01-01Not in this releaseNot in this releaseRVU13AR

Price 31591 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

31591 billing questions

How does this differ from vocal fold injection augmentation?

This code describes framework surgery that medializes one vocal fold. Code 31574 is for endoscopic injection augmentation, a different method of addressing glottic insufficiency.

What documentation supports reporting this code?

Document the indication, the side treated, and the operative steps showing framework medialization. The record should distinguish the surgery from injection augmentation or a diagnostic laryngeal examination.

Can the procedure be reported bilaterally?

CMS lists bilateral payment with modifier 50 at 150%. The operative documentation should support treatment of both sides.

What postoperative care is included?

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

When is an assistant or co-surgeon paid?

Assistant-at-surgery payment requires documentation of medical necessity. Co-surgeon payment requires supporting documentation, and team surgery is not permitted.

How are other procedures in the same session paid?

Under the standard multiple-procedure reduction, the highest-valued procedure is paid in full and the other procedures are paid at 50%.

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 31591PPRRVU2026_Oct_nonQPP.csv, line 3,617 (RVU26D)
Geographic factors for DelawareGPCI2026.csv, line 40 (RVU26D)

Open CMS sourceHow we calculate rates

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