Bütz, Evans, and Webber-Dereszynski (2009) proposed that disorders such as factitious disorder by proxy (FDBP) “. . . may collectively be a forerunner of the more sophisticated practice of wedding individual diagnoses and group, social, family, and legal dynamics together into an integrated, coded conceptualization” (p. 37). This article expands this recommendation, offering the term interrelated multidimensional diagnoses (IMDs) to better describe phenomenon such as FDBP and parental alienation (PA). In turn, this article articulates a definition for IMDs and makes the argument that FDBP and PA are examples of more sophisticated next generation diagnoses, which integrate the characteristics, interactions, and symptoms of individuals and systems dimensionally with greater explanatory power than other diagnoses alone. Implications for clinical and forensic identification and practice are discussed.