S.D. Codified Laws § 36-37-6
Any person who is licensed as a speech-language pathologist in this state may perform assessment, treatment, and procedures related to speech, voice, resonance, and swallowing function using nonmedical endoscopy as long as the person has received training and is competent to perform these procedures. A licensed speech-language pathologist shall have protocols in place for emergency medical backup when performing procedures using an endoscope.
For the purposes of this section, the term, endoscopy, means an imaging procedure within the scope of practice for speech-language pathologists in which a speech-language pathologist uses a flexible nasal endoscopy, rigid oral endoscopy, or stroboscopy for the purpose of evaluating and treating disorders of speech, voice, resonance, or swallowing function.
SDCL 36-37-6