Answer:
The codes of symptoms, signs and ill-defined conditions can be sequenced as the main diagnosis when the definitive diagnosis is not established.
Explanation:
When the patient is experiencing a situation where the cause of his problem cannot establish a definitive diagnosis, the codes of signs, symptoms and ill-defined conditions can be used as the main diagnosis. As mentioned before, this occurs when the main cause of the problem is difficult to observe. Thus, the treatment of the patient can be streamlined to solve the problem as far as possible and establish a certain comfort to the patient while the definitive diagnosis does not have enough information to be defined.
