Undrdose of antivaric drugs, including scler agents, subs

This code indicates that a patient is experiencing adverse effects or complications due to receiving an insufficient amount of medication intended to treat varicose veins or as a sclerosing agent. This underdosing is occurring during a subsequent encounter for the problem, meaning the initial treatment or diagnosis has already been established.

Use this code when documenting a patient presenting for follow-up care related to the underdosing of antivaricose drugs or sclerosing agents. This applies when the physician determines the prescribed dosage was inadequate, or the patient did not take the full prescribed amount, leading to ongoing or worsening symptoms.

• Always assign an additional code for the specific adverse effect or complication resulting from the underdosing.
• Ensure documentation clearly supports that the underdosing is the cause of the patient's current condition and that this is not the initial encounter for the problem.
• Distinguish from poisoning (overdosing, wrong substance, or wrong administration) which would use different codes.