I pay medical for my 2 kids. My ex reimburses me in cash for 1/2. Can i claim all the medical expenses on my taxes? They will be over 10% of AIG &will be itemizing.

All the medical bills are billed to me and i pay them 100%.  Each month, my ex gives me cash to cover 1/2 the expenses for the kids - clothes, medical etc.

Can i claim 100% of the medical bills?.