• § 874.3300 - Air-conduction hearing aid.

• § 874.3302 - Bone-conduction hearing aid.

• § 874.3305 - Wireless air-conduction hearing aid.

• § 874.3310 - Hearing aid calibrator and analysis system.

• § 874.3315 - Tympanic membrane contact hearing aid.

• § 874.3320 - Group hearing aid or group auditory trainer.

• § 874.3325 - Self-fitting air-conduction hearing aid.

• § 874.3330 - Master hearing aid.

• § 874.3340 - Active implantable bone conduction hearing system.

• § 874.3375 - Battery-powered artificial larynx.

• § 874.3400 - Tinnitus masker.

• § 874.3430 - Middle ear mold.

• § 874.3450 - Partial ossicular replacement prosthesis.

• § 874.3495 - Total ossicular replacement prosthesis.

• § 874.3540 - Prosthesis modification instrument for ossicular replacement surgery.

• § 874.3620 - Ear, nose, and throat synthetic polymer material.

• § 874.3695 - Mandibular implant facial prosthesis.

• § 874.3730 - Laryngeal prosthesis (Taub design).

• § 874.3760 - Sacculotomy tack (Cody tack)

• § 874.3820 - Endolymphatic shunt.

• § 874.3850 - Endolymphatic shunt tube with valve.

• § 874.3880 - Tympanostomy tube.

• § 874.3900 - Nasal dilator.

• § 874.3930 - Tympanostomy tube with semipermeable membrane.

• § 874.3950 - Transcutaneous air conduction hearing aid system.