91030 Acid perfusion of esophagus
Also known as: Bernstein test, acid perfusion test, acid challenge test
Acid perfusion test of the esophagus (Bernstein test) to evaluate whether acid in the esophagus reproduces symptoms like chest pain.
In Plain Language
test to see if acid causes symptoms; acid sensitivity test
Clinical Context
Diagnostic study used to correlate esophageal acid exposure with symptoms in patients with suspected gastroesophageal reflux disease. Helps confirm acid-related symptoms.
RVU Breakdown
| Work RVU | 0.89 |
| Total RVU | 0.89 |
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 0.89, this code ranks in the 54th percentile among Medicine codes — 1.1x the median (0.78). The highest wRVU in this category is 23.92.
Specialties
Frequently Asked Questions
What is CPT code 91030?
CPT 91030 (Acid perfusion of esophagus) is a Medicine code. Acid perfusion test of the esophagus (Bernstein test) to evaluate whether acid in the esophagus reproduces symptoms like chest pain.
Who uses CPT code 91030?
CPT 91030 is used by Gastroenterology, Internal Medicine, Surgery. Diagnostic study used to correlate esophageal acid exposure with symptoms in patients with suspected gastroesophageal reflux disease. Helps confirm acid-related symptoms.
When is CPT 91030 used?
Diagnostic study used to correlate esophageal acid exposure with symptoms in patients with suspected gastroesophageal reflux disease. Helps confirm acid-related symptoms.
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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.