Poisoning by vitamins, undetermined, subsequent encounter

This code signifies an adverse health effect resulting from exposure to vitamins, where the intent of the poisoning (e.g., accidental, intentional self-harm, assault) cannot be determined. This particular code is used for encounters following the initial treatment of the poisoning.

Apply this code when a patient presents for follow-up care, monitoring, or treatment of residual effects from a vitamin poisoning, and the documentation does not specify whether the poisoning was accidental, intentional, or due to assault. This is appropriate for situations like a patient returning for liver function tests after an acute vitamin overdose of unknown intent.

• Requires a seventh character "D" for subsequent encounter.
• Only use when the intent of the poisoning is explicitly documented as "undetermined."
• Always sequence this code after any codes for the specific manifestations of the poisoning.