正文
获取原文件references/omop-v54-policy.md
Rows are routed using the mapped Standard Concept domain_id.
Supported domains: Condition, Drug, Procedure, Measurement, Observation, Device.
One source fact may generate multiple rows because OMOP Maps-to is one-to-many.
Unmappable but explicitly accepted facts may use standard concept_id 0 in a locally selected fallback domain. Such rows are flagged for D014.
D013 never invents missing Type Concept IDs. Missing type concepts are staged as 0 with a high-severity warning.