91065 Breath hydrogen/methane test
Also known as: hydrogen breath test, lactose tolerance test, SIBO test
Breath hydrogen and methane test to evaluate intestinal carbohydrate malabsorption and bacterial overgrowth.
In Plain Language
breathing test for food intolerance; test for sugar digestion problems
Clinical Context
Non-invasive test measuring hydrogen and methane in breath to diagnose lactose intolerance, fructose malabsorption, and small intestinal bacterial overgrowth syndrome.
RVU Breakdown
| Work RVU | 0.20 |
| Total RVU | 0.20 |
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. This code has a 0-day global period, meaning pre- and post-operative E&M visits are billable separately on the same day. 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 0.20, this code ranks in the 12th percentile among Medicine codes — 3.9x below the median (0.78). The highest wRVU in this category is 23.92.
Specialties
Frequently Asked Questions
What is CPT code 91065?
CPT 91065 (Breath hydrogen/methane test) is a Medicine code. Breath hydrogen and methane test to evaluate intestinal carbohydrate malabsorption and bacterial overgrowth.
Who uses CPT code 91065?
CPT 91065 is used by Gastroenterology, Internal Medicine, Nutrition. Non-invasive test measuring hydrogen and methane in breath to diagnose lactose intolerance, fructose malabsorption, and small intestinal bacterial overgrowth syndrome.
When is CPT 91065 used?
Non-invasive test measuring hydrogen and methane in breath to diagnose lactose intolerance, fructose malabsorption, and small intestinal bacterial overgrowth syndrome.
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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.