Tachypnea, not elsewhere classified

This code signifies abnormally rapid breathing in an adult or child, which is not attributable to a specific, underlying respiratory condition classified elsewhere. It indicates a symptom of increased respiratory rate that requires further investigation to determine its etiology.

Apply this code when documentation explicitly states "tachypnea" without further specification of its cause, or when the underlying cause is unknown or not yet diagnosed. This is often used as a primary or secondary diagnosis in emergency department visits or initial assessments where the patient presents with rapid breathing.

• Always query for the underlying cause of tachypnea if not documented, as a more specific code may be available.
• Do not use this code if the documentation specifies "transitory tachypnea of newborn," as this is an Excludes1 condition.
• Consider sequencing this code after the primary condition causing the tachypnea, if known and documented.