Adverse effect of iron and its compounds, subs encntr

This code signifies a patient experiencing an unintended and undesirable reaction to iron or iron-containing compounds during a follow-up visit. This adverse effect is not due to poisoning or overdose, but rather a side effect from appropriate therapeutic use. The patient is receiving ongoing care for the adverse reaction.

Use this code when a patient presents for continued management or monitoring of an adverse effect from iron, such as gastrointestinal upset, constipation, or allergic reactions, after the initial treatment has been rendered. This applies to situations where the patient is still being treated for the adverse effect, or the adverse effect is still present and being evaluated.

• Always sequence this code after the code for the specific adverse effect (e.g., K92.1 for melena due to iron).
• Ensure the "D" seventh character is appropriate for a subsequent encounter, indicating ongoing care for the adverse effect.
• Distinguish from poisoning (T45.4X1-) or underdosing (T45.4X6-), which have different seventh characters.