Over half a million people were on hospital waiting lists last month, which is a new record high.
The latest figures from the National Treatment Purchase Fund show that there's been an increase of 27-thousand - since last May - to 535-thousand.
439-thousand are outpatients, with more than 80-thousand waiting for over a year.
The HSE says 34 per cent of inpatients are waiting less than 3 months, while 88 per cent of all adult patients are treated within the national target of 15 months.
Liam Doran, General Secretary of the Irish Nurses and Midwives Organisation, says it shows the health service is underfunded and under-resourced:
