CPT code 31638: Airway stent revision, tracheal or bronchial stent2026 Medicare rate & RVUs in New Mexico

Bronchoscopic revision adjusts a previously placed tracheal or bronchial stent when its position or function needs correction.

CMS RVU26DEffective Oct 1, 2026One payment locality346 Medicare services in 2024

In New Mexico, Medicare pays $218.67 for 31638 in a facility. There’s no office rate.

Not available in this settingOffice (non-facility)
$218.67Hospital or facility

Check a contract rate as a % of Medicare · 31638 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 31638 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in New Mexico
  2. What 31638 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 31638 covers

A pulmonologist or thoracic surgeon uses a bronchoscope to revise a stent already placed in the trachea or a bronchus. The service may be needed when a stent has migrated or no longer maintains the intended airway position or patency. It is commonly performed in a hospital procedural or operating-room setting. The key distinction is revision of an existing airway stent, rather than initial stent placement or airway dilation alone.

Report the service when the procedure note identifies the existing stent, its airway location, the reason for revision, and the work performed. The code has a 0-day global period, so same-day preoperative and postoperative care is included. When related endoscopies are performed together, CMS endoscopy-family pricing applies rather than treating each as an independent full procedure. Medicare does not pay an assistant-at-surgery claim for this service; co-surgeon and team-surgery billing 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 New Mexico compares for 31638

Across 109 of 109 payment localities, the facility rate for 31638 runs from $205.12 in Arkansas to $294.27 in Alaska. New Mexico pays $218.67. The RVUs are the same everywhere; the geographic indexes change the dollars.

31638 in New Mexico vs other payment areas
  1. New Mexico · this page$218.67
  2. Los Angeles, CA · California$228.31+$9.64
  3. Washington, DC area · District of Columbia$237.35+$18.68
  4. Miami, FL · Florida$245.43+$26.76
  5. Chicago, IL · Illinois$241.21+$22.54
  6. Manhattan, NY · New York$245.82+$27.15
  7. Alaska · Alaska$294.27+$75.60

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

Every other payment area

31638 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama—$206.64
ArkansasArkansas—$205.12
ArizonaArizona—$215.43
Bakersfield, CACalifornia—$220.09
Chico, CACalifornia—$218.61
El Centro, CACalifornia—$218.69
Fresno, CACalifornia—$218.61
Hanford, CACalifornia—$218.61

31638 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.

View every state and territory as a table
31638 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 31638 in every payment locality

How the 31638 rate is calculated

Each of 31638’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 · 31638

RVUs × geographic indexes × conversion factor

Office or facility?

Work4.76

4.76 RVUs× 1.000 GPCI

Practice expense1.32

1.32 RVUs× 1.000 GPCI

Malpractice0.48

0.48 RVUs× 1.000 GPCI

Adjusted RVUs

6.5600

Conversion factor

$33.4009

Medicare rate

$219.11

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

The exact New Mexico inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

3,647

Code
31638
Physician work
4.76
Practice expense
1.32
Malpractice
0.48

GPCI2026.csv

77

Locality
New Mexico
Physician work
1.000
Practice expense
0.917
Malpractice
1.201
Facility calculation for 31638 in New Mexico
ComponentRVULocality factorAdjusted
Physician work4.76× 1.0004.7600
Practice expense1.32× 0.9171.2104
Malpractice0.48× 1.2010.5765
Total RVUs6.5469
Conversion factor× 33.4009

Facility rate, New Mexico$218.67

Facility: (4.76 × 1 + 1.32 × 0.917 + 0.48 × 1.201) × $33.4009 = $218.67

Open 31638 in the RVU calculator

Payment rules and modifiers for 31638

The CMS indicators that decide how 31638 is paid alongside other services.

CMS payment indicators · 31638

Airway stent revision, tracheal or bronchial stent

RuleCMS valueWhat it means
Global period000Same-day global: pre- and post-op care on the day of the procedure is included.
Multiple procedures3Endoscopy family rules apply.
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

31638 without 51 · national facility

$219.11

Airway stent revision, tracheal or bronchial stent

31638-51 · Second procedure: 50%

$109.56

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 31638 has changed in New Mexico

31638 · 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
Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01Not available in this setting$218.67RVU26D
2026-07-01Not available in this setting$218.67RVU26C
2026-04-01Not available in this setting$218.67RVU26B
2026-01-01Not available in this setting$218.67RVU26A
2025-10-01Not available in this setting$231.44RVU25D
2025-07-01Not available in this setting$231.44RVU25C
2025-04-01Not available in this setting$231.44RVU25B
2025-01-01Not available in this setting$231.44RVU25A
2024-10-01Not available in this setting$236.96RVU24D
2024-07-01Not available in this setting$236.96RVU24C
2024-04-01Not available in this setting$236.96RVU24B
2024-03-09Not available in this setting$236.96RVU24AR
2024-01-01Not available in this setting$233.09RVU24A
2023-10-01Not available in this setting$241.20RVU23D
2023-07-01Not available in this setting$241.20RVU23C
2023-04-01Not available in this setting$241.20RVU23B
2023-01-01Not available in this setting$241.20RVU23A
2022-10-01Not available in this setting$246.29RVU22D
2022-07-01Not available in this setting$246.29RVU22C
2022-04-01Not available in this setting$246.29RVU22B
2022-01-01Not available in this setting$246.29RVU22A
2021-10-01Not available in this setting$248.55RVU21D
2021-07-01Not available in this setting$248.55RVU21C
2021-04-01Not available in this setting$248.55RVU21B
2021-01-01Not available in this setting$248.55RVU21A
2020-10-01Not available in this setting$256.77RVU20D
2020-07-01Not available in this setting$256.77RVU20C
2020-04-01Not available in this setting$256.77RVU20B
2020-01-01Not available in this setting$256.77RVU20A
2019-10-01Not available in this setting$259.67RVU19D
2019-07-01Not available in this setting$259.67RVU19C
2019-04-01Not available in this setting$259.67RVU19B
2019-01-01Not available in this setting$259.67RVU19A
2018-10-01Not available in this setting$259.50RVU18D
2018-07-01Not available in this setting$259.50RVU18C
2018-04-01Not available in this setting$259.50RVU18B
2018-01-01Not available in this setting$259.50RVU18AR1
2017-10-01Not available in this setting$259.83RVU17D
2017-07-01Not available in this setting$259.83RVU17C
2017-04-01Not available in this setting$259.83RVU17B
2017-01-01Not available in this setting$259.83RVU17A
2016-10-01Not available in this setting$260.05RVU16D
2016-07-01Not available in this setting$260.05RVU16C
2016-04-01Not available in this setting$260.05RVU16B
2016-01-01Not available in this setting$260.05RVU16A
2015-10-01Not available in this setting$262.33RVU15D
2015-07-01Not available in this setting$262.33RVU15C
2015-04-01Not available in this setting$261.03RVU15B
2015-01-01Not available in this setting$261.03RVU15A
2014-10-01Not available in this setting$259.95RVU14D
2014-07-01Not available in this setting$259.95RVU14C
2014-04-01Not available in this setting$259.95RVU14B
2014-01-01Not available in this setting$259.95RVU14A
2013-10-01Not available in this setting$251.66RVU13D
2013-07-01Not available in this setting$251.66RVU13C
2013-04-01Not available in this setting$251.66RVU13B
2013-01-01Not available in this setting$251.66RVU13AR

Price 31638 for an earlier date of service

Where the New Mexico rate applies

New Mexico is a Medicare payment area, not a city. Our Census mapping connects it to 528 cities and communities in New Mexico. Some span more than one payment area; confirm with the service ZIP.

  • Abeytas
  • Abiquiu
  • Acomita Lake
  • Adelino
  • Agua Fria
  • Alamillo
  • Alamo
  • Alamogordo

Browse all communities in New Mexico

31638 billing questions

When should this code be chosen instead of 31636?

Use 31638 for revision of an airway stent already in place. Code 31636 describes initial stent placement.

Can this code be reported with another bronchoscopy service on the same date?

Related endoscopies performed together are subject to CMS endoscopy-family pricing. Document each service performed and the distinct clinical work.

Does this code include same-day postoperative care?

Yes. Its 0-day global period includes same-day preoperative and postoperative care.

Can an assistant surgeon or co-surgeon be billed?

Medicare does not pay an assistant-at-surgery claim for this service. Co-surgeon and team-surgery billing are not permitted.

What documentation supports reporting stent revision?

Document the existing stent and its airway location, the reason it required revision, and the bronchoscopic adjustment or other revision performed.

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 31638PPRRVU2026_Oct_nonQPP.csv, line 3,647 (RVU26D)
Geographic factors for New MexicoGPCI2026.csv, line 77 (RVU26D)

Open CMS sourceHow we calculate rates

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