Final answer:
The correct answer is option c) J43.9, which is the ICD code for emphysema, a form of COPD.
Step-by-step explanation:
The correct answer to the question is option c) J43.9.
J43.9 is the International Classification of Diseases (ICD) code for emphysema, unspecified, which is a form of chronic obstructive pulmonary disease (COPD).
In this case, the patient is admitted for control of an exacerbation of their COPD. They had stopped taking prednisone, a corticosteroid, due to gaining weight. The reason for their admission is to manage the exacerbation, which is a worsening of their COPD symptoms.