Cox, Johnson, and Alexander (2012) report cochlear dead regions (DRs) occur when inner hair cells at a given frequency are lost or malfunctioning. Previous publications have suggested hearing-aid high-frequency gain should be attenuated in the presence of high frequency DRs.
Precondition for a VdS approval procedure, among others, is proof of a certified quality management system in accordance with DIN EN ISO 9001 for the manufacturing facility of the product.
Step 5: Earn Certification. Clinical documentation specialists can earn voluntary certification through the Association of Clinical Documentation Improvement Specialists. The Certified Clinical Documentation Specialist (CCDS) credential provides proof of competency in the field and may lead to career advancement. To qualify for the CCDS exam, applicants need 1-2 years of professional documentation experience combined with college-level coursework.