Postnasal drip

This code identifies the symptom of postnasal drip, characterized by the sensation of mucus accumulating in the back of the throat or dripping down from the nasal passages. It often leads to frequent throat clearing, coughing, or a sore throat. It is a symptom, not a definitive diagnosis of an underlying condition.

Use this code when postnasal drip is documented as a primary symptom without a more specific underlying cause identified or when it is the reason for the encounter. Documentation should clearly state "postnasal drip" or a similar phrase describing the sensation of mucus drainage down the posterior pharynx.

• Do not use this code if a definitive diagnosis for the postnasal drip (e.g., allergic rhinitis, sinusitis) is established; code the underlying condition instead.
• This code is often used in conjunction with other codes describing associated symptoms like cough (R05) or sore throat (R07.0).
• Ensure documentation specifies "postnasal drip" and not just "nasal discharge," which may indicate a different symptom.