Toxic effect of ingested (parts of) plant(s), undet, sequela

This code signifies a long-term or residual health problem resulting from the ingestion of an unidentified or unspecified plant, where the intent (accidental, intentional self-harm, assault) of the exposure is not documented. It indicates that the acute toxic effects have resolved, but lasting sequelae persist due to the plant poisoning.

Use this code when a patient presents with a chronic condition or permanent damage directly attributable to a past ingestion of a plant, and the specific plant or the circumstances of the ingestion are unknown or undetermined. This is appropriate for follow-up encounters addressing these persistent issues, not the initial acute poisoning.

• Always assign this code as a secondary diagnosis, following the code for the specific sequela.
• Ensure documentation clearly links the current condition to a past, undetermined plant ingestion.
• Avoid using this code for acute toxic effects; use the acute phase codes (T62.2X1-T62.2X4A) for initial encounters.