Why Richer Sleep Data Matters in 2027 Key takeaways •  The 2027 proposal classifies sleep-study complexity by the number of channels (data-collection pathways that record signals) and parameter categories (groupings of derived parameters), as defined in the AMA RUC materials. •  More channels and parameter categories move a study into a higher complexity tier — writing data richness into how studies are described and valued. •  Single-signal home tests can miss central events, positional apnea, and hypoxic burden that change treatment. •  Multi-channel measurement helps distinguish obstructive from central events and reveal positional and oxygenation risk. •  Wesper Lab captures...