Adverse effect of insulin and oral hypoglycemic drugs, subs

This code signifies a harmful or undesirable reaction experienced by a patient due to the therapeutic use of insulin or other oral medications prescribed to lower blood sugar. The adverse effect is being addressed during a follow-up visit, after the initial treatment for the reaction has begun.

Apply this code when a patient presents for ongoing management or monitoring of an adverse effect from antidiabetic medications, such as persistent hypoglycemia, allergic reactions, or gastrointestinal disturbances. This is appropriate for subsequent visits after the initial encounter where the adverse effect was first identified and treated.

• Always code the specific adverse effect first, followed by this code.
• Ensure documentation clearly indicates the encounter is for follow-up care of the adverse effect, not the initial treatment.
• Differentiate from poisoning (T38.3X1-) or underdosing (T38.3X6-).