Adverse effect of antidiarrheal drugs, subsequent encounter

This code signifies a patient experiencing an unintended and undesirable reaction to an antidiarrheal medication during a follow-up visit. This adverse effect is not due to poisoning, overdose, or improper use, but rather a known or unexpected side effect of the drug when administered correctly. The patient is receiving ongoing care for the adverse reaction.

Apply this code when a patient presents for continued management or monitoring of an adverse effect from an antidiarrheal drug, such as constipation, abdominal pain, or nausea, after the initial treatment has been provided. This code is appropriate for subsequent encounters related to the adverse effect, not the initial presentation.

• Always sequence this code after the code(s) for the specific manifestation of the adverse effect.
• Ensure documentation clearly indicates the encounter is for follow-up care of the adverse effect, not initial treatment.
• Verify the medication involved is an antidiarrheal agent to ensure correct category selection.