Underdosing of cardi-stim glycos/drug simlar act, sequela

This code signifies a long-term or residual effect resulting from a patient receiving an insufficient dose of cardiac-stimulant glycosides or similar medications. These drugs are typically used to strengthen heart contractions. The sequela could manifest as chronic heart failure exacerbation, persistent arrhythmias, or other ongoing cardiac dysfunction directly attributable to the past underdosing.

Apply this code when documenting a current condition that is a direct consequence of a past underdosing of medications like digoxin. This is appropriate for chronic or permanent effects, not for acute underdosing events. For example, use it for a patient presenting with worsening chronic heart failure due to a history of consistently low digoxin intake.

• Always use this code as a secondary diagnosis, following the code for the specific sequela (e.g., chronic heart failure).
• Ensure documentation clearly links the current condition to a past underdosing of cardiac-stimulant glycosides.
• The "S" in the 7th character indicates sequela, meaning the acute phase of the underdosing has passed.