Deduction in respect of donations to certain funds, charitable institutions, etc. (1) In computing the total income of an assessee, there shall be 
deducted,
Provided that such Fund is-
(a) the only Fund of its kind established in the State or the Union territory, as the case may be;
(b) under the overall control of the Chief Secretary or the Department of Finance of the State or the Union territory, as the case may be;
(c) administered in such manner as may be specified by the State Government or the Lieutenant Governor, as the case may be; or
(iiihg) the National Sports Fund to be set up by the Central Government; or
(iiihh) the National Cultural Fund set up by the Central Government; or
(iiihi) the Fund for Technology Development and Application set up by the Central Government; or
(iiihj) the National Trust for Welfare of Persons with Autism, Cerebral Palsy, Mental Retardation and Multiple Disabilities constituted under sub-section (1) of section 3 of the National Trust for Welfare of Persons with Autism, Cerebral Palsy, Mental Retardation and Multiple Disabilities Act, 1999 (44 of 1999); or
(iv) any other fund or any institution to which this section applies; or
(v) the Government or any local authority, to be utilised for any charitable purpose other than the purpose of promoting family planning; or
(vi) any authority referred to in clause (20A) of section 10;
Further More Details :
Save income tax using section 80DD and 80U
Section 80DD- Medical Treatment of Handicapped Dependents
https://enabled.in/wp/tag/tax/
Source : http://www.disabilityindia.org/sec80G.cfm