A patient is admitted with bronchopneumonia, unresponsive to outpatient treatment. The patient is on chemotherapy for previously resected breast carcinoma with axillary and possible lung metastases.
The pneumonia responded slowly to IV antibiotic therapy, and when his lungs cleared the patient was discharged to resume antineoplastic treatment in one week.
What is the ICD-10 code for the principal diagnosis for this admission with POA?