Percentage of patients aged 18 years and older, who are evaluated for hearing loss and complete a hearing loss self-assessment tool that indicated an impact of hearing-related quality of life (QoL), and if diagnosed with a bilateral moderate to profound sensorineural hearing loss (SNHL) and less than 60% open set speech recognition are scheduled or referred for cochlear implant candidacy testing AND for patients who undergo cochlear implantation, demonstrate a meaningful clinically important difference (MCID) improvement in self-assessment of Hearing-related QoL or an improvement in speech recognition within 18 months of cochlear implant activation.