$27.15
Choose 94728 for oscillometry measurements made during quiet breathing. Choose 94010 when the service is spirometry measuring airflow and volume during breathing maneuvers.
On this page
CMS RVU26D · Effective 2026-10-01
94728 Airway resistance Medicare reimbursement rates in Kansas
Measures respiratory resistance and related mechanics during quiet breathing with oscillometry, often as part of evaluating obstructive airway symptoms or disease. Compare 94728 office and facility rates across CMS payment localities in Kansas.
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 94728 in Kansas?
Kansas 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
$44.01
1 of 1 localities have a supported rate.
Payment area: Kansas
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 function testing
About 94728: Airway resistance oscillometry test
Measures respiratory resistance and related mechanics during quiet breathing with oscillometry, often as part of evaluating obstructive airway symptoms or disease.
Oscillometry assesses respiratory-system mechanics by applying small pressure oscillations while the patient breathes quietly through a mouthpiece. The test measures airway resistance and related responses without requiring repeated forceful expiratory maneuvers. Pulmonary function laboratories commonly perform it under the direction of pulmonologists, allergists, or other clinicians evaluating conditions such as asthma or obstructive lung disease; it can also provide measurements when a patient has difficulty completing effort-dependent testing.
Report 94728 for the oscillometry test itself, not for spirometry, lung-volume measurement, or gas-transfer testing. Documentation should identify the test performed and include the recorded results and the interpreting clinician’s findings. CMS recognizes a professional component, reported with modifier 26 for interpretation, and a technical component, reported with modifier TC for equipment and staff. Reporting the code without either modifier represents the global service, including both components.
CMS billing rules for 94728
- 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 RVU0.25 · 17%
- Practice expense (office) RVU1.17 · 81%
- Malpractice RVU0.02 · 1%
2.8K
Medicare services in 2024 · #2232 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.
94728 compared with similar codes
Office rates for Kansas, from the same CMS release.
$58.07
94726 measures lung volumes by plethysmography; 94728 measures respiratory mechanics using oscillometry. They describe different tests.
$45.52
94727 measures lung volumes by gas dilution or washout. It is not the code for oscillometry-based airway resistance testing.
Compare 94728 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
Kansas →
Office / nonfacility
$44.01
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 94728 in Kansas.
PPRRVU2026_Oct_nonQPP.csv
12,436
- Code
- 94728
- Physician work
- 0.25
- Practice expense
- 1.17
- Malpractice
- 0.02
GPCI2026.csv
54
- Locality
- Kansas
- Physician work
- 1.000
- Practice expense
- 0.904
- Malpractice
- 0.504
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 0.25 | × 1.000 | 0.2500 |
| Practice expense | 1.17 | × 0.904 | 1.0577 |
| Malpractice | 0.02 | × 0.504 | 0.0101 |
| Total RVUs | 1.3178 | ||
| Conversion factor | × 33.4009 | ||
Office / nonfacility rate, Kansas$44.01
Explore RVUs, geographic factors and the full formula
Office / nonfacility
| Component | RVU | Local GPCI |
|---|---|---|
| Work | 0.25 | 1 |
| Practice expense | 1.17 | 0.904 |
| Malpractice | 0.02 | 0.504 |
(0.25 × 1 + 1.17 × 0.904 + 0.02 × 0.504) × $33.4009 = $44.01
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.
94728 billing questions
How is oscillometry different from spirometry?
Oscillometry measures respiratory mechanics during quiet breathing using applied pressure oscillations. Spirometry measures airflow and volume during breathing maneuvers, including forced expiration.
Can 94728 be reported with lung-volume testing?
Yes, when oscillometry and a distinct lung-volume test are both performed and documented. The lung-volume service is separate from the oscillometry measurement.
What do modifiers 26 and TC represent?
Modifier 26 identifies the professional interpretation, while modifier TC identifies the technical service, including equipment and staff. Without either modifier, 94728 represents the global service.
What documentation supports reporting 94728?
Document that oscillometry was performed, the results obtained, and the clinician’s interpretation. For component billing, the record should support the professional or technical service represented by the modifier.
Is airway resistance by oscillometry the same as lung-volume measurement?
No. Oscillometry evaluates respiratory-system mechanics during quiet breathing; lung-volume tests measure volumes of air in the lungs using a different testing method.
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.
12,43394727,,Gas dil/wshot deter lng vol,A,,0.25,1.22,,1.22,NA,0.02,1.49,1.49,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,43494727,26,Gas dil/wshot deter lng vol,A,,0.25,0.10,,0.10,,0.01,0.36,0.36,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,43594727,TC,Gas dil/wshot deter lng vol,A,,0.00,1.12,,1.12,NA,0.01,1.13,1.13,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,01,0,99,0.00,0.00,0.00
12,43694728,,Airwy resist by oscillometry,A,,0.25,1.17,,1.17,NA,0.02,1.44,1.44,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,43794728,26,Airwy resist by oscillometry,A,,0.25,0.11,,0.11,,0.01,0.37,0.37,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,43894728,TC,Airwy resist by oscillometry,A,,0.00,1.06,,1.06,NA,0.01,1.07,1.07,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,01,0,99,0.00,0.00,0.00
12,43994729,,Diffusing capacity,A,,0.19,1.69,,1.69,NA,0.02,1.90,1.90,1,ZZZ,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
5106102,IL,99,REST OF ILLINOIS,1.000,0.913,1.563
5208102,IN,00,INDIANA,1.000,0.927,0.486
5305102,IA,00,IOWA,1.000,0.915,0.397
5405202,KS,00,KANSAS,1.000,0.904,0.504
5515102,KY,00,KENTUCKY,1.000,0.889,0.915
5607202,LA,01,NEW ORLEANS,1.000,0.941,1.136
5707202,LA,99,REST OF LOUISIANA,1.000,0.885,0.958