$68.95
94452 covers simulated-altitude assessment with interpretation and report; 94453 identifies the service involving supplemental oxygen titration during that assessment.
On this page
CMS RVU26D · Effective 2026-10-01
94452 Altitude simulation test Medicare reimbursement rates in Oklahoma
Reports simulated-altitude breathing assessment with interpretation and a written report, typically used to evaluate oxygenation before air travel in a patient with lung disease. Compare 94452 office and facility rates across CMS payment localities in Oklahoma.
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 94452 in Oklahoma?
Oklahoma 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
$52.30
1 of 1 localities have a supported rate.
Payment area: Oklahoma
One mapped payment locality.
Facility setting
No 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.
Pulmonary diagnostic testing
About 94452: High-altitude simulation test with interpretation
Reports simulated-altitude breathing assessment with interpretation and a written report, typically used to evaluate oxygenation before air travel in a patient with lung disease.
A high-altitude simulation test assesses whether a patient maintains adequate oxygenation while breathing a reduced-oxygen mixture that approximates an aircraft cabin environment. A pulmonary laboratory or respiratory therapist typically administers the test and monitors oxygen saturation. A physician or other qualified health care professional interprets the findings and prepares the report. The test may be requested before air travel for a patient with chronic lung disease whose oxygen needs at cabin altitude are uncertain.
Report 94452 for the simulated-altitude assessment with interpretation and report. The record should identify the simulated exposure, the patient's oxygenation during testing, and the interpreting clinician's findings. If supplemental oxygen is titrated during the assessment, consider the distinct service described by 94453. Medicare recognizes a professional component for the interpretation, reported with modifier 26, and a technical component for the equipment and staff, reported with modifier TC. Billing 94452 without either modifier represents the complete service.
CMS billing rules for 94452
- Professional and technical components
- Diagnostic test with a professional component (modifier 26, interpretation) and a technical component (modifier TC, equipment and staff); billing without a modifier is the global service.
Where the value comes from
- Work RVU0.30 · 17%
- Practice expense (office) RVU1.40 · 81%
- Malpractice RVU0.02 · 1%
777
Medicare services in 2024 · #3184 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.
94452 compared with similar codes
Office rates for Oklahoma, from the same CMS release.
$102.65
Choose 94450 for testing the patient's breathing response to hypoxia. Choose 94452 for assessing oxygenation under simulated high-altitude conditions with interpretation and report.
Compare 94452 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
Oklahoma →
Office / nonfacility
$52.30
Facility
Unavailable
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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 94452 in Oklahoma.
PPRRVU2026_Oct_nonQPP.csv
12,391
- Code
- 94452
- Physician work
- 0.30
- Practice expense
- 1.40
- Malpractice
- 0.02
GPCI2026.csv
86
- Locality
- Oklahoma
- Physician work
- 1.000
- Practice expense
- 0.893
- Malpractice
- 0.777
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 0.30 | × 1.000 | 0.3000 |
| Practice expense | 1.40 | × 0.893 | 1.2502 |
| Malpractice | 0.02 | × 0.777 | 0.0155 |
| Total RVUs | 1.5657 | ||
| Conversion factor | × 33.4009 | ||
Office / nonfacility rate, Oklahoma$52.30
Explore RVUs, geographic factors and the full formula
Office / nonfacility
| Component | RVU | Local GPCI |
|---|---|---|
| Work | 0.3 | 1 |
| Practice expense | 1.4 | 0.893 |
| Malpractice | 0.02 | 0.777 |
(0.3 × 1 + 1.4 × 0.893 + 0.02 × 0.777) × $33.4009 = $52.30
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.
94452 billing questions
How does 94452 differ from 94450?
94452 assesses oxygenation during simulated altitude exposure. Code 94450 evaluates the breathing response to hypoxia, rather than the result of a simulated aircraft-cabin exposure.
When should 94453 be considered?
Consider 94453 when the simulated-altitude assessment includes supplemental oxygen titration. The testing record should show the oxygen adjustments and the patient's response.
Which modifier identifies interpretation only?
Use modifier 26 with 94452 when billing the professional interpretation and report without the equipment and staff portion. Modifier TC identifies the technical portion; an unmodified claim represents both.
Can the oxygen saturation readings during the test be billed as a separate spot oximetry service?
Readings taken to monitor the simulated-altitude exposure support the 94452 test. They should not be recast as an independent spot measurement solely because an oximeter was used.
What documentation supports 94452?
Document the reduced-oxygen exposure, monitored oxygenation, and the physician's or qualified health care professional's interpretation and report.
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.
12,38894450,,Breathing response hypoxia,A,,0.39,2.97,,2.97,NA,0.04,3.40,3.40,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,38994450,26,Breathing response hypoxia,A,,0.39,0.27,,0.27,,0.02,0.68,0.68,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,39094450,TC,Breathing response hypoxia,A,,0.00,2.70,,2.70,NA,0.02,2.72,2.72,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,02,0,99,0.00,0.00,0.00
12,39194452,,Hast w/i&r phys/qhp,A,,0.30,1.40,,1.40,NA,0.02,1.72,1.72,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,39294452,26,Hast w/i&r phys/qhp,A,,0.30,0.13,,0.13,,0.01,0.44,0.44,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,39394452,TC,Hast w/i&r phys/qhp,A,,0.00,1.27,,1.27,NA,0.01,1.28,1.28,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,02,0,99,0.00,0.00,0.00
12,39494453,,Hast w/suppl oxygen titrj,A,,0.39,1.84,,1.84,NA,0.04,2.27,2.27,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
8311502,NC,00,NORTH CAROLINA,1.000,0.933,0.639
8403302,ND,01,NORTH DAKOTA**,1.000,1.000,0.406
8515202,OH,00,OHIO,1.000,0.913,1.008
8604312,OK,00,OKLAHOMA,1.000,0.893,0.777
8702302,OR,01,PORTLAND,1.016,1.111,0.744
8802302,OR,99,REST OF OREGON,1.000,0.996,0.703
8912502,PA,01,METROPOLITAN PHILADELPHIA,1.018,1.041,1.193