$56.26–$61.18
Choose 94727 for lung-volume measurement by gas dilution or washout; choose 94726 when the documented method is plethysmography.
On this page
CMS RVU26D · Effective 2026-10-01
94727 Lung volumes Medicare reimbursement rates in Missouri
Measures lung volumes using gas dilution or washout, typically in a pulmonary function laboratory when a clinician needs lung-volume data. Compare 94727 office and facility rates across CMS payment localities in Missouri.
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 94727 in Missouri?
Missouri has 3 payment localities in this comparison. Use the service location to choose the applicable amount. These are the supported base rates for the 3 payment areas shown below, using the same CMS release.
Office / nonfacility
$44.13–$47.81
3 of 3 localities have a supported rate.
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.
Where 94727 pays more and less in Missouri
3 payment localities
$44.13 to $47.81
Pulmonary function testing
About 94727: Gas dilution lung-volume measurement
Measures lung volumes using gas dilution or washout, typically in a pulmonary function laboratory when a clinician needs lung-volume data.
Code 94727 covers lung-volume measurement by gas dilution or washout, commonly using helium dilution or nitrogen washout in a pulmonary function laboratory. The test estimates functional residual capacity and derives residual volume and total lung capacity; respiratory therapists typically conduct the maneuver, with a clinician interpreting the results. Because the method measures gas that reaches communicating airways, its lung-volume results can differ from body plethysmography when air trapping is present.
Select 94727 when the documented method is gas dilution or washout, rather than the plethysmographic method reported with 94726. The record should identify the testing method, include the resulting lung-volume measurements, and support the interpreting clinician’s conclusions. CMS recognizes separately priced professional and technical components: use modifier 26 for interpretation, modifier TC for equipment and staff, or report without either modifier for the global service. Report the test service rather than separate units for each calculated volume.
CMS billing rules for 94727
- 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) RVU1.22 · 82%
- Malpractice RVU0.02 · 1%
249.3K
Medicare services in 2024 · #346 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.
94727 compared with similar codes
Office rates for Missouri, from the same CMS release.
$55.65–$60.75
Code 94729 measures pulmonary diffusing capacity, not lung volumes. It may be performed in the same testing encounter as 94727.
$42.69–$46.22
Code 94728 measures airway resistance using oscillometry. Code 94727 measures lung volumes using gas dilution or washout.
Compare 94727 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.
3 of 3 payment localities
Metropolitan Kansas City →
Office / nonfacility
$47.27
Facility
Unavailable
Metropolitan St. Louis →
Office / nonfacility
$47.81
Facility
Unavailable
Rest Of Missouri →
Office / nonfacility
$44.13
Facility
Unavailable
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94727 billing questions
How does 94727 differ from 94726?
Code 94727 is for lung volumes measured by gas dilution or washout. Use 94726 for the plethysmographic method.
Can 94727 be reported with a diffusion-capacity test?
Yes. A gas-dilution lung-volume test and a diffusion-capacity test measure different pulmonary functions and may be performed during the same testing encounter.
Which modifiers identify the components?
Modifier 26 identifies the professional interpretation, and modifier TC identifies the technical service, including equipment and staff. Without either modifier, the claim represents the global service.
Should each measured lung volume be reported as a separate unit?
No. Report the gas-dilution or washout test service, not separate units for functional residual capacity, residual volume, and total lung capacity.
What documentation supports 94727?
Document the gas-dilution or washout method, the resulting lung-volume measurements, and the clinician’s interpretation. The method helps distinguish this service from plethysmography.
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.
12,43094726,,Plethysmography lung volumes,A,,0.25,1.63,,1.63,NA,0.03,1.91,1.91,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,43194726,26,Plethysmography lung volumes,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
12,43294726,TC,Plethysmography lung volumes,A,,0.00,1.53,,1.53,NA,0.02,1.55,1.55,1,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,01,0,99,0.00,0.00,0.00
12,43394727,,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