$191.14
99183 represents the physician’s professional service; G0277 represents the technical hyperbaric chamber service, measured in 30-minute units.
On this page
CMS RVU26D · Effective 2026-10-01
99183 Hyperbaric oxygen Medicare reimbursement rates in Vermont
Reports the physician’s professional service for a hyperbaric oxygen treatment session, separately from the technical service for chamber treatment. Compare 99183 office and facility rates across CMS payment localities in Vermont.
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 99183 in Vermont?
Vermont has 1 payment locality in this comparison. Use the service location to choose the applicable amount. These are the supported base rates for the payment area shown below, using the same CMS release.
Office / nonfacility
$104.94
1 of 1 localities have a supported rate.
Payment area: Vermont
One mapped payment locality.
Facility setting
$104.94
1 of 1 localities have a supported rate.
Payment area: Vermont
One mapped payment locality.
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.
Hyperbaric therapy
About 99183: Physician-supervised hyperbaric oxygen session
Reports the physician’s professional service for a hyperbaric oxygen treatment session, separately from the technical service for chamber treatment.
Code 99183 represents the physician’s professional involvement in a hyperbaric oxygen treatment session. In a hospital or outpatient wound-care setting, the physician oversees the patient during treatment and documents the clinical assessment and response. Common treatment situations include selected diabetic lower-extremity wounds and tissue injury from radiation; the code represents the professional service, not the chamber or oxygen equipment.
Report the code for each documented session in which the physician provides the professional service. The record should identify the treatment session, the patient’s condition and relevant assessment, and the physician’s oversight and report. CMS identifies 99183 as a professional-component-only code; the technical portion is represented separately, commonly by HCPCS G0277 for hyperbaric oxygen under pressure in a full-body chamber. Keep documentation and claims distinct so the professional service is not mistaken for the chamber’s technical service.
CMS billing rules for 99183
- Professional and technical components
- Professional-component-only code: interpretation and report; a separate code covers the technical portion.
Where the value comes from
- Work RVU2.06 · 63%
- Practice expense (office) RVU0.96 · 29%
- Malpractice RVU0.26 · 8%
295.6K
Medicare services in 2024 · #315 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.
99183 compared with similar codes
Office rates for Vermont, from the same CMS release.
Compare 99183 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.
1 of 1 payment localities
Vermont →
Office / nonfacility
$104.94
Facility
$104.94
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How this local rate is calculated
Each RVU component is multiplied by its own geographic practice cost index (GPCI). The three adjusted components are added, then multiplied by the conversion factor. These are the inputs used for 99183 in Vermont.
PPRRVU2026_Oct_nonQPP.csv
13,001
- Code
- 99183
- Physician work
- 2.06
- Practice expense
- 0.96
- Malpractice
- 0.26
GPCI2026.csv
105
- Locality
- Vermont
- Physician work
- 1.000
- Practice expense
- 0.990
- Malpractice
- 0.506
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 2.06 | × 1.000 | 2.0600 |
| Practice expense | 0.96 | × 0.990 | 0.9504 |
| Malpractice | 0.26 | × 0.506 | 0.1316 |
| Total RVUs | 3.1420 | ||
| Conversion factor | × 33.4009 | ||
Office / nonfacility rate, Vermont$104.94
Explore RVUs, geographic factors and the full formula
Office / nonfacility
| Component | RVU | Local GPCI |
|---|---|---|
| Work | 2.06 | 1 |
| Practice expense | 0.96 | 0.99 |
| Malpractice | 0.26 | 0.506 |
(2.06 × 1 + 0.96 × 0.99 + 0.26 × 0.506) × $33.4009 = $104.94
Facility
| Component | RVU | Local GPCI |
|---|---|---|
| Work | 2.06 | 1 |
| Practice expense | 0.96 | 0.99 |
| Malpractice | 0.26 | 0.506 |
(2.06 × 1 + 0.96 × 0.99 + 0.26 × 0.506) × $33.4009 = $104.94
The office and facility calculations use their respective practice-expense RVUs. The facility amount here is the physician fee, not a separate hospital or facility bill.
99183 billing questions
Does 99183 include the hyperbaric chamber service?
No. CMS identifies 99183 as professional-component-only; the chamber’s technical service is reported separately, commonly with HCPCS G0277.
What should the physician document for 99183?
Document the treatment session, the patient’s condition and assessment, and the physician’s oversight and report for that session.
Is 99183 reported once per course of therapy or per session?
It represents a treatment session, so report it for each session when the physician provides and documents the professional service.
Should modifier 26 be appended to 99183?
CMS identifies 99183 itself as a professional-component-only code. Do not treat it as the technical chamber service.
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.
12,99899174,,Ocular instrumnt screen bil,N,+,0.00,0.19,,0.19,NA,0.01,0.20,0.20,9,XXX,0.00,0.00,0.00,9,9,9,9,9,9,,33.4009,09,0,99,0.00,0.00,0.00
12,99999175,,Induction of vomiting,A,,0.00,1.36,,1.36,NA,0.01,1.37,1.37,5,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
13,00099177,,Ocular instrumnt screen bil,N,+,0.00,0.15,,0.15,NA,0.01,0.16,0.16,9,XXX,0.00,0.00,0.00,9,9,9,9,9,9,,33.4009,09,0,99,0.00,0.00,0.00
13,00199183,,Hyperbaric oxygen therapy,A,,2.06,0.96,,0.96,,0.26,3.28,3.28,2,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
13,00299184,,Hypothermia ill neonate,A,,4.39,0.82,NA,0.82,,0.30,5.51,5.51,0,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
13,00399188,,App topical fluoride varnish,N,+,0.20,0.15,,0.04,,0.01,0.36,0.25,0,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
13,00499190,,Special pump services,X,,0.00,0.00,,0.00,,0.00,0.00,0.00,9,XXX,0.00,0.00,0.00,9,9,9,9,9,9,,33.4009,09,0,99,0.00,0.00,0.00
10204412,TX,18,HOUSTON,1.008,0.993,1.376
10304412,TX,99,REST OF TEXAS,1.000,0.949,0.903
10403502,UT,09,UTAH,1.000,0.940,0.898
10514512,VT,50,VERMONT,1.000,0.990,0.506
10611302,VA,00,VIRGINIA,1.000,0.983,0.706
10709202,VI,50,VIRGIN ISLANDS,1.000,1.011,0.985
10802402,WA,02,SEATTLE (KING CNTY),1.050,1.227,0.817