A child advocacy group says women who have sick babies in hospital should all get meals, regardless of whether they breastfeed or bottlefeed.
District health boards are allowed to decide which parents they feed and some exclude those who bottle feed.
Southern District Health Board changed its feeding policy this week to include all women with sick infants, after being criticised for ignoring bottle feeders.
But others, including Canterbury, West Coast, Auckland, Waikato and Midcentral, say they will continue to prioritise breast feeding mothers because they supply nutrition to their babies through lactation.
Every Child Counts manager Deborah Morris-Travers said all parents with sick children need extra help.