Your diagnostic criteria dissolves across national boarders.
US platforms operationalize psychological harm using DSM-5 categories because they are embedded in American clinical and insurance infrastructure. But DSM-5 diverges from ICD-11, collapses against UK and Nordic diagnostic thresholds, and encodes cultural assumptions that misfire in Global South markets. ADHD prevalence in the US is 2.5x the UK rate. That is not a clinical difference. That is a classification regime your model is exporting. Why this matters to you: When the EU represents 23% of revenue, EU clinical standards become your de facto global standards. You do not want to federate your safety taxonomy across two policy teams, two data architectures, two sets of clinical advisors. But if your classifiers are trained on DSM-5 harm categories and your largest non-US market uses ICD-11 definitions, you have already federated. You just have not staffed for it. CCHAC provides the cross-mapping layer your policy team is missing. For you: Policy Design Managers (Anthropic-type roles). Trust and Safety leads at foundational model companies. Clinical advisors contracted for safety audits.
