CPT code 31630: Bronchoscopy, airway dilation without stent2026 Medicare rate & RVUs in Missouri
Reports therapeutic bronchoscopy to widen a narrowed tracheal or bronchial segment, such as an airway stenosis, without placement of a stent.
CMS doesn’t publish an office rate for 31630 in Missouri.
Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.
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What 31630 covers
This therapeutic bronchoscopy widens a narrowed segment of the trachea or a bronchus, such as scar-related airway stenosis. An interventional pulmonologist, thoracic surgeon, or otolaryngologist may perform it with a rigid or flexible bronchoscope in an operating room or endoscopy suite. The service involves treating the narrowing to improve airway caliber; stent placement is reported with a different code.
Report 31630 when the provider performs airway dilation, not for diagnostic inspection alone. Documentation should identify the treated airway segment, the narrowing, and the dilation performed. The 0-day global period includes same-day preoperative and postoperative care. When related endoscopies are performed together, CMS endoscopy-family pricing applies, so they are not each paid as standalone procedures. Modifier 50 is inappropriate. Medicare does not pay an assistant at surgery for this service, and co-surgery 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.
Where 31630 pays more and less in Missouri
The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.
| Payment locality | Office | Facility |
|---|---|---|
| Metropolitan Kansas City, MO | Unavailable | $174.03 |
| Metropolitan St. Louis, MO | Unavailable | $174.89 |
| Rest of Missouri | Unavailable | $171.05 |
How the 31630 rate is calculated
Each of 31630’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 · 31630
RVUs × geographic indexes × conversion factor
Work3.71
3.71 RVUs× 1.000 GPCI
Practice expense1.14
1.14 RVUs× 1.000 GPCI
Malpractice0.44
0.44 RVUs× 1.000 GPCI
Adjusted RVUs
5.2900
Conversion factor
$33.4009
Medicare rate
$176.69
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 31630
The CMS indicators that decide how 31630 is paid alongside other services.
CMS payment indicators · 31630
Bronchoscopy, airway dilation without stent
| Rule | CMS value | What it means |
|---|---|---|
| Global period | 000 | Same-day global: pre- and post-op care on the day of the procedure is included. |
| Multiple procedures | 3 | Endoscopy family rules apply. |
| Bilateral (modifier 50) | 0 | The 150% bilateral adjustment doesn’t apply. |
| Assistant at surgery (80/81/82/AS) | 1 | Not paid (statutory restriction). |
| Co-surgeons (62) | 0 | Not permitted. |
| Team surgery (66) | 0 | Not permitted. |
| Professional/technical | 0 | Physician service: no professional/technical split. |
What modifiers do to the payment
Modifier 51 · payment effect
With and without the modifier
31630 without 51 · national facility
$176.69
Bronchoscopy, airway dilation without stent
31630-51 · Second procedure: 50%
$88.35
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%).
31630 compared with similar codes
Compare codes · National
5 codes, side by side
How to choose
- 31631Airway stentTracheal stent placement
- Choose 31630 for airway dilation without a stent. Choose 31631 when a tracheal or bronchial stent is placed.
- 31636Bronchial stentInitial bronchus
- 31636 describes bronchial stent placement; 31630 describes dilation of a tracheal or bronchial narrowing without stent placement.
- 31641Therapeutic bronchoscopyTumor destruction or stenosis relief
- 31641 is used for bronchoscopic treatment of obstruction or stenosis by a method other than dilation. Select 31630 when dilation is the treatment performed.
- 31622BronchoscopyDiagnostic with washing
- 31622 is for diagnostic bronchoscopy. When the session includes therapeutic airway dilation, report the treatment service rather than diagnostic inspection alone.
31630 billing questions
How is 31630 different from a bronchoscopy with stent placement?
Use 31630 for dilation without stent placement. When a tracheal or bronchial stent is placed, consider the code that describes the stent procedure and airway site.
Can diagnostic bronchoscopy be reported separately with 31630?
Diagnostic inspection used to reach and assess the narrowing is generally part of the therapeutic bronchoscopy. The record should show the airway dilation, not just an examination.
How are related endoscopies paid when performed together?
CMS endoscopy-family pricing applies to related endoscopies performed together. The procedures are not each paid at their standalone allowance.
Should modifier 50 be used for dilation on both sides?
No. The CMS bilateral adjustment does not apply to 31630, and modifier 50 is inappropriate.
What documentation supports reporting 31630?
Document the location of the tracheal or bronchial narrowing and the therapeutic dilation performed. Same-day preoperative and postoperative care is included in the 0-day global period.
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
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