94452 Hast with i & r phys/qhp
Also known as: altitude simulation test, HAST with interpretation, hypoxia assessment
Hypoxia altitude simulation test with interpretation and reporting by physician or qualified health professional to assess breathing response at altitude.
In Plain Language
high altitude breathing test; oxygen deprivation test
Clinical Context
Used to evaluate patients planning air travel or high-altitude activities to predict risk of altitude-related complications.
RVU Breakdown
| Work RVU | 0.30 |
| Total RVU | 0.30 |
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 0.30, this code ranks in the 19th percentile among Medicine codes — 2.6x below the median (0.78). The highest wRVU in this category is 23.92.
Specialties
Frequently Asked Questions
What is CPT code 94452?
CPT 94452 (Hast with i & r phys/qhp) is a Medicine code. Hypoxia altitude simulation test with interpretation and reporting by physician or qualified health professional to assess breathing response at altitude.
Who uses CPT code 94452?
CPT 94452 is used by Pulmonology, Aviation Medicine, Internal Medicine. Used to evaluate patients planning air travel or high-altitude activities to predict risk of altitude-related complications.
When is CPT 94452 used?
Used to evaluate patients planning air travel or high-altitude activities to predict risk of altitude-related complications.
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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.