Final answer:
Coexisting conditions, also known as secondary diagnoses, are additional conditions or symptoms that affect a patient's management.
Step-by-step explanation:
Coexisting conditions, also known as secondary diagnoses, are additional conditions or symptoms that affect a patient's management. These conditions can often complicate the treatment plan and require additional attention from healthcare providers. For example, a patient with diabetes may also have hypertension or kidney disease as coexisting conditions, which would impact their overall management and treatment.