The Centers for Disease Control and Prevention (CDC) symptom inventory for chronic fatigue syndrome (CFS or ME) is aimed to assess whether a person meets the CDC diagnostic criteria for (CFS)¹⁾ (section: diseases & symptoms.
Note that Lifelines also assesses (chronic) fatigue using the CIS and PROMIS instruments plus some general questions.

The CDC symptom survey assesses the 8 symptoms that are part of the diagnostic criteria for CSF, plus a single question on fatigue duration and a single yes/no question on depression in the last 6 months to increase the diagnostic value.
The presence of CFS is currently only questioned by self-report, but recent studies indicate that this methodology misses 90% of the CFS diagnoses ²⁾. Using the CDC symtom survey, participants may be diagnosed with CFS/ME in the dataset.