The Ghost star has been "on vacation" since finishing treatment at a facility in Utah this week.
A source claimed that the former couple, who separated in November amid rumours of Kutcher's infidelity, have met up in the wake of Moore's health crisis.
"They are not getting back together," an insider told People. "[But] he knew it was important to her daughters."
Moore has three children with first husband Bruce Willis - 23-year-old Rumer Willis, 20-year-old Scout and Tallulah, 18.
Rumer is believed to have been with Moore on the night of her infamous collapse in January.
In the weeks that followed, she was alleged to have been suffering with anorexia and exhaustion.
A close friend suggested at the time that Moore's troubles were not solely to do with her divorce from Kutcher.