Billing code 31300: Laryngeal lesion removalMedicare rate & RVUs in Iowa
Reports open surgical removal of a laryngeal tumor or lesion through a laryngotomy when the surgeon uses an open rather than endoscopic approach.
CMS doesn’t publish an office rate for 31300 in Iowa.
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 9 sections
What 31300 covers
An otolaryngologist or head and neck surgeon uses an open laryngotomy to reach and remove a tumor or other lesion of the larynx. The operation is generally performed in an operating room, often in a hospital facility, when the lesion is treated through an open surgical exposure rather than removed endoscopically. The excised tissue is typically submitted for pathologic examination.
Report this service when the operative note supports open access to the larynx and removal of a lesion; distinguish it from endoscopic excision and from partial or total laryngectomy. The code has a 90-day global period, including the day-before preoperative visit and related postoperative care during the 90 days after surgery. When multiple procedures are performed in the same session, the highest-valued procedure is paid in full and other procedures are subject to the standard 50% reduction. Modifier 50 is not appropriate. An assistant at surgery may be paid; co-surgeon payment requires supporting documentation, and 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.
31300 in Iowa
| Payment locality | Office | Facility |
|---|---|---|
| Iowa | Unavailable | $1,031.20 |
How the 31300 rate is calculated
Each of 31300’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 · 31300
RVUs × geographic indexes × conversion factor
Work15.51
15.51 RVUs× 1.000 GPCI
Practice expense15.81
15.81 RVUs× 1.000 GPCI
Malpractice2.26
2.26 RVUs× 1.000 GPCI
Adjusted RVUs
33.5800
Conversion factor
$33.4009
Medicare rate
$1,121.60
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 31300
31300 has a 90-day global period: related visits in that window are included in the surgery payment.
CMS payment indicators · 31300
Laryngeal lesion removal
| Rule | CMS value | What it means |
|---|---|---|
| Global period | 090 | Major surgery: the day before, the day of, and 90 days after are included. |
| Multiple procedures | 2 | Standard reduction: highest-valued procedure at 100%, others at 50%. |
| Bilateral (modifier 50) | 0 | The 150% bilateral adjustment doesn’t apply. |
| Assistant at surgery (80/81/82/AS) | 2 | Paid. |
| Co-surgeons (62) | 1 | Permitted with supporting documentation. |
| Team surgery (66) | 0 | Not permitted. |
| Professional/technical | 0 | Physician service: no professional/technical split. |
| Split (54/55/56) | 0.10/0.76/0.14 | Share of the payment for pre-op, the procedure itself, and post-op care. |
Global surgery period · 31300
Laryngeal lesion removal
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.
Pre-op dayGlobal period
What modifiers do to the payment
Modifier 51 · payment effect
With and without the modifier
31300 without 51 · national facility
$1,121.60
Laryngeal lesion removal
31300-51 · Second procedure: 50%
$560.80
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%).
31300 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- 31540Laryngeal excision
- 31300 describes open laryngotomy access to remove a lesion. Choose 31540 for operative endoscopic laryngeal excision.
- 31367Partial laryngectomy
- 31367 is a partial laryngectomy code; 31300 describes lesion removal through laryngotomy without describing a partial laryngectomy.
- 31360Laryngectomy
- 31360 represents total laryngectomy. Use 31300 when the operation removes a laryngeal lesion without removing the entire larynx.
31300 billing questions
How is this different from endoscopic laryngeal lesion excision?
Use 31300 when the surgeon reaches the larynx through an open laryngotomy. Direct operative laryngoscopy codes describe endoscopic access.
When should a partial laryngectomy code be considered instead?
Choose a partial laryngectomy code when the documented operation removes part of the larynx as a resection, rather than removing a lesion through laryngotomy.
What documentation supports 31300?
The operative report should establish the open laryngotomy approach, identify the laryngeal lesion, and describe its removal. A pathology report may support the submitted specimen but does not replace the operative details.
Can modifier 50 be used for lesions involving both sides?
No. Modifier 50 is not appropriate for this service.
How does the 90-day global period affect follow-up billing?
The day-before preoperative visit and related postoperative care during the 90 days after surgery are included in the global period.
Can an assistant or co-surgeon be reported?
An assistant at surgery may be paid. Co-surgeon payment requires supporting documentation; team surgery is not permitted.
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
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