Underdosing of antifungal antibiotics, sys used, init

This code signifies that a patient is receiving an insufficient amount of a systemically administered antifungal medication, leading to a suboptimal therapeutic effect. This underdosing can result in persistent or worsening fungal infections due to inadequate drug levels in the body.

Use this code when documenting the initial encounter where a patient's systemic antifungal regimen is identified as being below the prescribed or therapeutically effective dose. This applies to situations where the patient is not taking enough medication, the dosage prescribed is too low, or there are issues with drug absorption leading to underdosing.

• Always use in conjunction with a code for the specific fungal infection being treated.
• Ensure documentation clearly states that the underdosing is the reason for the current encounter or management.
• This "initial encounter" seventh character is used as long as the patient is receiving active treatment for the underdosing.