No office rate
31528 identifies the initial laryngeal dilation in a treatment series; 31529 identifies a subsequent dilation procedure.
On this page
CMS RVU26D · Effective 2026-10-01
31529 Laryngeal dilation Medicare reimbursement rates in Michigan
Direct laryngoscopy with dilation treats persistent or recurrent laryngeal narrowing during a subsequent procedure in a dilation series. Compare 31529 office and facility rates across CMS payment localities in Michigan.
Amounts below use the non-QP conversion factor for participating physicians. These are base physician payments before claim-level adjustments, not patient costs or total hospital charges.
What does Medicare pay for 31529 in Michigan?
Michigan has 2 payment localities in this comparison. Use the service location to choose the applicable amount. These are the supported base rates for the 2 payment areas shown below, using the same CMS release.
Office / nonfacility
No supported rate
Facility setting
$136.27–$145.32
2 of 2 localities have a supported rate.
These are locality ranges, not averages or address-specific quotes. A facility-setting amount covers the physician service; it does not include a hospital’s separate bill. Choose a locality below to inspect its calculation, compare other payment areas, or price a percentage of Medicare.
Otolaryngology
About 31529: Subsequent laryngeal dilation
Direct laryngoscopy with dilation treats persistent or recurrent laryngeal narrowing during a subsequent procedure in a dilation series.
An otolaryngologist uses direct laryngoscopy to examine the larynx and dilate a narrowed area, commonly for persistent or recurrent stenosis after an earlier dilation. The service is typically performed in an operating room, often under general anesthesia. This code identifies a subsequent dilation procedure in the treatment series, rather than the initial dilation represented by its sibling code.
Report the subsequent-service code when the operative record supports that the patient is returning for another dilation procedure; document the laryngeal finding, dilation performed, and relevant prior treatment. The procedure has a 0-day global period, so same-day preoperative and postoperative care are included. When related endoscopies are performed together, CMS endoscopy-family pricing applies. Modifier 50 is inappropriate for this code. Assistant-at-surgery payment requires documented medical necessity; co-surgeons and team surgery are not permitted.
CMS billing rules for 31529
- Global period
- Minor procedure with a 0-day global period: same-day preoperative and postoperative care is included.
- Multiple procedures
- Endoscopy family pricing applies when related endoscopies are performed together.
- Bilateral procedures
- Bilateral adjustment does not apply; the descriptor or anatomy makes modifier 50 inappropriate.
- Assistant at surgery
- Assistant at surgery is paid only with documentation of medical necessity.
- Co-surgeons
- Co-surgeons not permitted.
- Team surgery
- Team surgery not permitted.
Where the value comes from
- Work RVU2.61 · 63%
- Practice expense (office) RVU1.14 · 28%
- Malpractice RVU0.38 · 9%
629
Medicare services in 2024 · #3353 by national volume
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.
31529 compared with similar codes
Office rates for Michigan, from the same CMS release.
$239.50–$254.53
31525 is diagnostic laryngoscopy. Choose 31529 when direct laryngoscopy includes therapeutic dilation of laryngeal narrowing.
No office rate
31551 is laryngoplasty for laryngeal stenosis, a reconstructive procedure; 31529 is endoscopic dilation.
Compare 31529 by payment locality
Find the payment area for your service address, then open its rate page for calculation inputs, release history and the percentage-of-Medicare tool. A city may cross payment-area boundaries; the ZIP lookup above helps resolve the location.
2 of 2 payment localities
Detroit →
Office / nonfacility
Unavailable
Facility
$145.32
Rest Of Michigan →
Office / nonfacility
Unavailable
Facility
$136.27
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31529 billing questions
How does this code differ from 31528?
31529 is for a subsequent laryngeal dilation procedure in a treatment series. Use 31528 for the initial dilation.
Does a second dilation during the same operation make this the subsequent code?
No. The distinction is between the initial and a subsequent procedure in the treatment series, not the number of dilation maneuvers during one operation.
Can diagnostic laryngoscopy be separately reported with the dilation?
The laryngoscopic visualization used to perform the dilation is part of the service. Do not separately report a diagnostic laryngoscopy for that same operative inspection.
Should modifier 50 be appended for dilation on both sides?
No. CMS identifies bilateral adjustment as inappropriate for this code.
What documentation supports reporting a subsequent dilation?
Document the laryngeal narrowing, the direct laryngoscopy and dilation performed, and the prior treatment supporting that this is a subsequent procedure in the series.
When may an assistant-at-surgery be paid?
Only when the record documents medical necessity for the assistant. CMS does not permit co-surgeon or team-surgery payment for this code.
Where these rates come from
FeeBase calculates base physician payments from CMS work, practice-expense, and malpractice RVUs, adjusted by each locality’s geographic indices and the applicable conversion factor. Unavailable or separately priced services are labeled rather than assigned a made-up amount.
Source: RVU26D. Effective 2026-10-01 through the day before 2027-01-01.
3,58431526,,Dx laryngoscopy w/oper scope,A,,2.51,1.17,NA,1.17,,0.37,4.05,4.05,0,000,0.00,0.00,0.00,2,0,1,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
3,58531527,,Laryngoscopy for treatment,A,,3.19,1.34,NA,1.34,,0.46,4.99,4.99,0,000,0.00,0.00,0.00,3,0,0,0,0,9,31525,33.4009,09,0,99,0.00,0.00,0.00
3,58631528,,Laryngoscopy and dilation,A,,2.31,1.08,NA,1.08,,0.35,3.74,3.74,0,000,0.00,0.00,0.00,3,0,0,0,0,9,31525,33.4009,09,0,99,0.00,0.00,0.00
3,58731529,,Laryngoscopy and dilation,A,,2.61,1.14,NA,1.14,,0.38,4.13,4.13,0,000,0.00,0.00,0.00,3,0,0,0,0,9,31525,33.4009,09,0,99,0.00,0.00,0.00
3,58831530,,Laryngoscopy w/fb removal,A,,3.30,1.37,NA,1.37,,0.51,5.18,5.18,0,000,0.00,0.00,0.00,3,0,1,0,0,9,31525,33.4009,09,0,99,0.00,0.00,0.00
3,58931531,,Laryngoscopy w/fb & op scope,A,,3.49,1.45,NA,1.45,,0.50,5.44,5.44,0,000,0.00,0.00,0.00,3,0,0,0,0,9,31526,33.4009,09,0,99,0.00,0.00,0.00
3,59031535,,Laryngoscopy w/biopsy,A,,3.08,1.32,NA,1.32,,0.45,4.85,4.85,0,000,0.00,0.00,0.00,3,0,1,0,0,9,31525,33.4009,09,0,99,0.00,0.00,0.00