For more information about how we evaluate the severity of a child’s limitations, see SSR 09-1p. For a comprehensive discussion of how we document a child’s functioning, including evidentiary sources, see SSR 09-2p, Title XVI: Determining Childhood Disability – Documenting a Child’s Impairment-Related Limitations.
: https://www.ssa.gov/OP_Home/rulings/ssi/02/SSR2009-07-ssi-02.html