Content validation of the nursing diagnosis "Insufficient breast milk production (00216)".

Purpose: To review and validate the elements of the nursing diagnosis (ND) "Insufficient breast milk production" (00216) based on the literature and expert consensus, and to construct operational definitions (ODs) for its defining characteristics (DCs).

Methods: It is a methodological study carried out in two phases. In the first phase, a scoping review was conducted, and in the second, a committee of experts reviewed the elements' content.