Esophageal motility study
| Esophageal motility study | |
|---|---|
| Diagram of esophageal motility study in 'nutcracker esophagus'. The disorder shows peristalsis with high pressure esophageal contractions exceeding 180 mmHg and contractile waves with a long duration exceeding 6 seconds. | |
| ICD-9-CM | 89.32 | 
| OPS-301 code | 1-313 | 
| MedlinePlus | 003884 | 
An esophageal motility study (EMS) or esophageal manometry is a test to assess motor function of the upper esophageal sphincter (UES), esophageal body and lower esophageal sphincter (LES).