Can I use ICD-10 codes to report signs and symptoms

ICD-10-CM codes can occasionally be used to report signs and symptoms. In the outpatient setting, signs and symptoms can be reported as the first listed diagnosis if a definite diagnosis is not established. Signs and symptoms can also be reported as secondary diagnoses if they are not part of the first listed condition.

It is much less common to report signs and symptoms as the principal diagnosis in the inpatient setting, but a few exceptions may apply. Refer to the Official Guidelines for specifics.