Underdosing of antitussives, sequela

This code indicates a patient is experiencing a long-term or residual effect from not receiving enough antitussive medication. This underdosing occurred in the past and is now causing persistent symptoms or complications. The current condition is a direct consequence of the previous insufficient antitussive treatment.

Use this code when documenting a patient presenting with chronic cough, respiratory irritation, or other ongoing symptoms that are directly attributable to a past instance of inadequate antitussive administration. This applies when the underdosing event itself is no longer active, but its effects continue to manifest.

• Always sequence this code after the code(s) for the specific sequela (e.g., chronic cough).
• Ensure documentation clearly links the current condition to a past underdosing of antitussives.
• Do not use for acute underdosing events; this code is specifically for residual effects.