91038 Esophageal imped funct test > 1hr
Also known as: extended impedance test, prolonged clearance study, extended bolus transit
Esophageal impedance function test performed for more than one hour to provide extended assessment of bolus clearance.
In Plain Language
extended test of swallowing ability; long-term esophagus clearance monitoring
Clinical Context
Extended diagnostic study over more than one hour to comprehensively assess esophageal clearance of multiple boluses. Identifies subtle clearing defects.
RVU Breakdown
| Work RVU | 1.10 |
| Total RVU | 1.10 |
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 1.10, this code ranks in the 60th percentile among Medicine codes — 1.4x the median (0.78). The highest wRVU in this category is 23.92.
Specialties
Frequently Asked Questions
What is CPT code 91038?
CPT 91038 (Esophageal imped funct test > 1hr) is a Medicine code. Esophageal impedance function test performed for more than one hour to provide extended assessment of bolus clearance.
Who uses CPT code 91038?
CPT 91038 is used by Gastroenterology, Internal Medicine, Otolaryngology. Extended diagnostic study over more than one hour to comprehensively assess esophageal clearance of multiple boluses. Identifies subtle clearing defects.
When is CPT 91038 used?
Extended diagnostic study over more than one hour to comprehensively assess esophageal clearance of multiple boluses. Identifies subtle clearing defects.
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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.