In an Indian Railways news update, the Ministry of Railways have decided to grant concession in Second class and AC Chair Car of Jan Shatabdi trains to the Patients who are already eligible to travel in second class and AC chair car of Mail/Express trains, w.e.f. 15/05/2017. A patient who is at present eligible to travel in second class of Mail/Express trains shall now be eligible in Second class of Jan Shatabdi trains and the same shall apply for AC Chair car class too.
According to a Western Railway Press Release, if a patient who is not eligible for concession at present to travel in either Second class or AC Chair Car of Mail/Express trains, in that case, such patient shall not be eligible for concession in Jan Shatabdi trains also.
Ref: IndianRailways