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Hearing Instrument Specialist (HIS) Study Guide 2026
Hardcover
Series: Meridian Certification Press Study Guides
ISBN13: 9781608887668
Publisher: Meridian Certification Press
Published: Mar 31 2026
Pages: 138
Weight: 1.60
Height: 0.50 Width: 8.50 Depth: 11.00
Language: English
Hearing Instrument Specialist (HIS) Certification Study Guide 2026 is a focused 136-page exam preparation resource for candidates pursuing NBC-HIS national certification and state licensing as a Hearing Instrument Specialist. This guide covers the full scope of knowledge tested on the NBC-HIS examination, from regulatory foundations and ear anatomy through audiometric assessment, hearing aid technology, fitting and verification, patient counseling, and business practices. It is designed for aspiring hearing instrument specialists, hearing aid dispensers preparing for licensure, and practicing professionals seeking certification renewal. This is an independent publication not affiliated with NBC-HIS or the International Hearing Society.
The guide is organized into seven parts spanning 18 chapters. Part I: Regulatory and Professional Foundations covers the HIS profession including the professional hierarchy, NBC-HIS certification requirements, state licensing variations, the impact of the OTC Hearing Aid Act, FDA regulations for prescription and OTC hearing aids, labeling requirements, HIPAA compliance, and the IHS Code of Ethics. Part II: Anatomy, Physiology, and Pathology covers ear anatomy from outer ear through the central auditory pathway, the physics of sound and decibel scale, hearing physiology including frequency selectivity and loudness perception, and classification of hearing loss by type, degree, and configuration. Part III: Audiometric Assessment details pure tone audiometry including air and bone conduction testing and masking, speech audiometry covering SRT, word recognition, and speech-in-noise testing, and immittance testing including tympanometry, acoustic reflexes, and otoacoustic emissions. Part IV: Hearing Aid Technology covers components and styles from CIC to BTE, connectivity, and digital signal processing including compression, noise reduction, feedback management, and AI features in modern hearing aids. Part V: Hearing Aid Selection and Fitting addresses prescriptive fitting formulas, monaural versus binaural fitting, real-ear measurement and verification, and impression taking and earmold acoustics. Part VI: Patient Management covers expectation management, acclimatization, communication strategies, motivational interviewing, and systematic troubleshooting. Part VII: Business Practices and Special Populations addresses pricing models, insurance, telehealth, professional liability, and fitting considerations for pediatric, geriatric, tinnitus, CROS/BiCROS, and cochlear implant referral cases.
The guide includes three complete practice examinations testing all NBC-HIS exam domains. Appendices provide a regulations and standards reference covering federal regulations and ANSI/ASA standards, common audiometric symbols, and a comprehensive glossary. Every chapter opens with learning objectives and concludes with review questions. All content has been adversarially verified for accuracy against current NBC-HIS exam specifications and FDA regulations.
The hearing healthcare field is experiencing rapid growth driven by an aging population, increased awareness of hearing health, and expanded access through OTC hearing aids. NBC-HIS certification positions professionals to serve the estimated 48 million Americans with hearing loss, offering a career that combines technical expertise with direct patient impact. This guide provides the structured preparation needed to pass the certification exam and launch a career helping people reconnect with the world of sound.
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