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Billing code 31637: Bronchial stentMedicare rate & RVUs

Report this add-on when bronchoscopy places a bronchial stent in an additional bronchus beyond the initial bronchus treated during the same procedure.

CMS RVU26DEffective Oct 1, 2026109 payment localities225 Medicare services in 2024

Medicare pays $67.14 for 31637 nationally in a facility.

Medicare rate · 31637

Bronchial stent

Swap in your local Medicare rate.

Work RVUs
1.54
Total RVUs
2.01
Global days
ZZZ

National rate · 2026

$67.14

Facility setting, before claim adjustments.

See every locality for 31637 → · Billed by an NP, PA or therapist? →

Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.

On this page 10 sections
  1. Medicare rate
  2. What 31637 covers
  3. By payment locality
  4. Rate map
  5. How it’s calculated
  6. Payment rules
  7. Similar codes
  8. Related codes
  9. Billing questions
  10. Sources

What 31637 covers

This add-on describes bronchoscopic placement of a stent in an additional bronchus after the initial bronchus has been treated. Interventional pulmonologists and thoracic surgeons may use it when airway narrowing or obstruction, such as from a tumor or stenosis, involves more than one bronchus. Placement is performed with a rigid or flexible bronchoscope, commonly in a hospital setting.

Report 31637 for each additional bronchus treated, not for each extra stent placed in the same bronchus. The procedure record should identify the bronchus receiving the additional stent and support that placement occurred during the session. Pair it with the primary bronchial stent placement code, 31636, for the initial bronchus. CMS classifies 31637 as an add-on that is billed only with a primary procedure, with payment within that procedure’s global period.

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.

Where 31637 pays more and less

The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.

109 of 109 payment localities

31637 office and facility rates by payment locality
Payment localityOfficeFacility
AlabamaUnavailable$63.63
Alaska*Unavailable$91.30
ArizonaUnavailable$66.08
ArkansasUnavailable$63.20
AtlantaUnavailable$68.47
AustinUnavailable$67.29
BakersfieldUnavailable$67.18
Baltimore/Surr. CntysUnavailable$69.93
BeaumontUnavailable$65.82
BrazoriaUnavailable$66.35

31637 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.

View every state and territory as a table
31637 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

How the 31637 rate is calculated

Each of 31637’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 · 31637

RVUs × geographic indexes × conversion factor

Swap in your local Medicare rate.

Work 1.54Practice expense 0.32Malpractice 0.15

2.0100 adjusted RVUs×$33.4009 conversion factor=$67.14

All indexes start at 1.000 (the national rate). Enter a ZIP or drag a slider.

Payment rules and modifiers for 31637

The CMS indicators that decide how 31637 is paid alongside other services.

CMS payment indicators · 31637

Bronchial stent

RuleCMS valueWhat it means
Global periodZZZAdd-on code: falls within the primary procedure’s global period.
Multiple procedures0No multiple-procedure reduction.
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.

31637 compared with similar codes

Compare codes

31637 vs 31636 vs 31631 vs 31638 vs 31630: national Medicare rates

Swap in your local Medicare rate.

  • 31637
    Bronchial stent · 1.54 wRVU
    —
  • 31636
    Bronchial stent · 4.19 wRVU
    —
  • 31631
    Airway stent · 4.25 wRVU
    —
  • 31638
    Airway stent revision · 4.76 wRVU
    —
  • 31630
    Bronchoscopy · 3.71 wRVU
    —

How to choose

31636Bronchial stent
31636 reports bronchial stent placement in the initial bronchus. Use 31637 for each additional bronchus treated in the same procedure.
31631Airway stent
31631 applies to tracheal stent placement; 31637 applies to stent placement in an additional bronchus after the initial bronchus.
31638Airway stent revision
31638 is for revision of an existing tracheal or bronchial stent. 31637 reports placement in an additional bronchus.
31630Bronchoscopy
31630 describes bronchoscopic dilation or closed reduction, while 31637 is for additional bronchial stent placement.

Codes related to 31637

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

Codes related to 31637
CodeHow it relatesNational office range
Add-on codes
31636Bronchial stentPrimary code for initial bronchial stent placement; pair it with this add-on for each additional bronchus.No office rate
Used instead
31631Airway stentUsed for tracheal stent placement rather than stenting an additional bronchus.No office rate
31638Airway stent revisionDescribes revision of an existing airway stent, not placement in an additional bronchus.No office rate
31630BronchoscopyDescribes bronchoscopic airway dilation rather than additional bronchial stent placement.No office rate

31637 billing questions

When should 31637 be reported instead of 31636?

Use 31636 for the initial bronchus receiving a bronchial stent. Report 31637 for each additional bronchus treated during the procedure.

Does each additional stent require a unit of 31637?

No. The add-on is based on each additional bronchus, not the number of stents placed in the same bronchus.

Can 31637 be billed without 31636?

No. CMS identifies 31637 as an add-on that must be billed with a primary procedure; 31636 is the primary code for initial bronchial stent placement.

What documentation supports reporting an additional unit?

Document the bronchoscopic stent placement and identify each additional bronchus treated beyond the initial bronchus.

Can a modifier make 31637 independently reportable?

No. A modifier does not replace the required primary procedure pairing.

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 31637PPRRVU2026_Oct_nonQPP.csv, line 3,646 (RVU26D)

Open CMS sourceHow we calculate rates

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