Type Alias: NdcSegmentation

NdcSegmentation = "5-4-2" | "5-4-1" | "5-3-2" | "4-4-2" | "11-digit" | "10-digit" | "unknown"

The labeler/product/package segmentation hint for an NDC. Real-world NDCs arrive in several digit groupings; we surface the detected shape rather than forcing a normalization the consumer may not want.