> It may include near-cash government transfers like food stamps, and it may be adjusted to include social transfers in-kind, such as the value of publicly provided health care and education.

Additionally from the OECD website:

> Household adjusted disposable income additionally reallocates "income" from government and Non-Profit Institutions Serving Households (NPISHs) to households to reflect social transfers in kind. These transfers reflect expenditures made by government or NPISHs on individual goods and services, such as health and education, on behalf of an individual household.