A federal judge ruled Tuesday that Texas can't cut off Medicaid dollars to Planned Parenthood over secretly recorded videos taken by anti-abortion activists in 2015 that launched Republican efforts across the US to defund the nation's largest abortion provider.

An injunction issued by American District Sam Sparks of Austin comes after he delayed making decision in January and essentially bought Planned Parenthood an extra month in the state's Medicaid programme.

Texas is now at least the sixth state where federal courts have kept Planned Parenthood eligible for Medicaid reimbursements for non-abortion services, although a bigger question remains over whether President Donald Trump will federally defund the organisation.