DHS 107.18(1)(c)(c) Speech procedure treatments. The following speech procedure treatments shall be performed by a certified speech and language pathologist or under the direct, immediate, on-premises supervision of a certified speech and language pathologist: DHS 107.18(1)(c)1.e.e. Language content, including range of abstraction in meanings and cognitive skills; and DHS 107.18(1)(c)2.a.a. Auditory processing — attention span, acuity or perception, recognition, discrimination, memory, sequencing and comprehension; and DHS 107.18(1)(c)2.b.b. Visual processing — attention span, acuity or perception, recognition, discrimination, memory, sequencing and comprehension;