94727 Gas dil/wshot deter lng vol
Also known as: gas dilution lung volumes, helium dilution, nitrogen washout
Gas dilution or nitrogen washout method to measure lung volumes without using plethysmography chamber.
In Plain Language
gas breathing lung capacity test; lung volume via breathing test
Clinical Context
Used as an alternative to plethysmography for measuring lung volumes in patients unable to tolerate closed chamber testing.
RVU Breakdown
| Work RVU | 0.25 |
| Total RVU | 0.25 |
Est. Medicare Payment
National estimate based on 2026 CMS PFS Conversion Factor ($33.40). Actual payment varies by locality (GPCI adjustment).
Billing & Documentation
Medicine section codes cover a wide range of non-surgical services. Documentation should include the clinical indication, procedure details, interpretation (if applicable), and any patient-specific findings.
How This Code Compares
With a work RVU of 0.25, this code ranks in the 16th percentile among Medicine codes — 3.1x below the median (0.78). The highest wRVU in this category is 23.92.
Specialties
Frequently Asked Questions
What is CPT code 94727?
CPT 94727 (Gas dil/wshot deter lng vol) is a Medicine code. Gas dilution or nitrogen washout method to measure lung volumes without using plethysmography chamber.
Who uses CPT code 94727?
CPT 94727 is used by Pulmonology, Internal Medicine, Occupational Medicine. Used as an alternative to plethysmography for measuring lung volumes in patients unable to tolerate closed chamber testing.
When is CPT 94727 used?
Used as an alternative to plethysmography for measuring lung volumes in patients unable to tolerate closed chamber testing.
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CPT® is a registered trademark of the American Medical Association. Data sourced from CMS Physician Fee Schedule RVU26A. Descriptions, synonyms, and clinical context are original content by RVU Edge.