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

This code signifies that a patient has experienced an adverse effect due to taking less than the prescribed or recommended dose of a cardiac-stimulant glycoside or a drug with similar action. This underdosing can lead to a recurrence or worsening of the underlying cardiac condition for which the medication was prescribed.

Apply this code when a patient presents for initial treatment of symptoms directly attributable to insufficient intake of medications like digoxin, leading to therapeutic failure. This includes situations where the patient intentionally or unintentionally took less than the required dose, resulting in a return of cardiac symptoms.

• Always sequence this code after the code for the underlying cardiac condition that is being treated.
• Ensure documentation clearly states "underdosing" and specifies the drug class (cardiac-stimulant glycoside or similar).
• This "initial encounter" seventh character is used for each encounter where the patient is receiving active treatment for the underdosing.