Preauricular cyst. 1  ICD-9-CM 744.47 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 744.47 should only be used for claims with a date of service on or before September 30, 2015. For claims with a date of service on or after October 1, 2015, use an equivalent ICD-10-CM code (or codes).
The most common silent reflux symptoms are hoarseness, chronic cough, throat-clearing, post-nasal drip, sinusitis, sore or burning throat, difficulty swallowing, shortness of breath, snoring, sleep apnea, bad breath, tooth decay, asthma, and COPD.
Causes of Reflux. Normal, physiologic reflux is thought to be caused by relaxation of the muscle between the esophagus and stomach, the lower esophageal sphincter (LES). In infants, the LES is thought to strengthen with time as reflux diminishes.