Hearing loss makes it difficult for McLeod to communicate so he has limited contact with others, aside from one friend who helps him communicate when needed.
SCIP general manager Neil Heslop says the annual base figure of 40 surgeries hasn't changed in five years and is now inadequate.
"Without an increase in Government support the majority will never hear again - unless they have $50,000 to fund the procedure with privately,
"What's more, based on current referral rates there could be 500 adults waiting for a cochlear implant in as little as four years."
Heslop says often those in need of a cochlear implant will experience clinical depression or anxiety, which can lead to downstream social and economic effects on them and their family.
"Behind the numbers there are real people. Parents who can no longer hear their children's voices, talented professionals who are now unemployed, and people who are isolated because they can't communicate."
Government funding for children's surgeries is currently meeting demand.