Ohio Rev. Code § 3129.04: Permissible medical treatment.

This chapter does not prohibit a physician from treating, including by performing surgery on or prescribing drugs or hormones for, a minor individual who meets any of the following:

(A) Was born with a medically verifiable disorder of sex development, including an individual with external biological sex characteristics that are irresolvably ambiguous, such an as individual born with forty-six XX chromosomes with virilization, forty-six XY chromosomes with undervirilization, or having both ovarian and testicular tissue;

(B) Received a diagnosis of a disorder of sexual development, in which a physician has determined through genetic or biochemical testing that the individual does not have normal sex chromosome structure, sex steroid hormone production, or sex steroid hormone action for a biological male or biological female;

(C) Needs treatment for any infection, injury, disease, or disorder that has been caused or exacerbated by the performance of gender transition services, whether or not the services were performed in accordance with state or federal law.