Rudolph W. Giuliani, the former New York City mayor who has been diagnosed with pneumonia, is applying for free medical care through a federal program for emergency workers and others exposed to toxins following the Sept. 11, 2001, terrorist attacks, according to his lawyer.

More than 152,000 people have been enrolled in the initiative, the World Trade Center Health Program, which pays for medical research and provides free medical care to people affected by the terrorist attacks. Beneficiaries have access to doctors who specialize in Sept. 11-related illnesses, and the patients don’t face co-payments or deductibles.