Toxic effect of ingested mushrooms, undetermined, sequela

This code signifies the long-term or residual health problems resulting from a past, unconfirmed mushroom ingestion that caused a toxic reaction. It indicates that the acute phase of the poisoning has resolved, but the patient continues to experience lasting effects attributable to the original exposure. The specific type of mushroom involved in the poisoning was not identified.

Apply this code when a patient presents with chronic symptoms or conditions that a physician definitively links to a prior, undocumented toxic mushroom ingestion. This is appropriate for follow-up encounters where the initial poisoning event is no longer active, but its sequelae are being managed. Use when the specific mushroom species is unknown.

• Always sequence this code after the code for the specific sequela (e.g., chronic liver damage, neurological deficits).
• Ensure documentation clearly states the link between the current condition and a past, undetermined mushroom poisoning.
• Do not use for acute poisoning or when the type of mushroom is known; refer to other T62.0X codes for those scenarios.