The HSE has confirmed that there were approximately 180 children's details on the Speech abnd Language Therapy Service laptop stolen from the boot of a car last week.
The register has the details of the children listed by service location, care group, their name, address and contact phone number.
Responding to queries from Highland Radio News, the HSE has confirmed the laptop was fully encrypted.
The HSE says it has written to all parents of clients whose details were on the register to inform them of the breach, and advising them whom then should contact if they had any concerns.
The matter was immediately reported to an Garda Siochana who are investigating the theft. It has also been notified to the Data Protection Commissioner.
The statement concludes that this incident has had no impact on service provision.