Poisoning by local anesthetics, accidental, subs

This code indicates an adverse health effect resulting from the unintentional ingestion, exposure, or administration of a local anesthetic, where the patient is receiving follow-up care for the poisoning. This could involve complications, ongoing treatment, or monitoring related to the initial accidental poisoning event.

Use this code when documenting a patient's visit for continued management of symptoms or complications arising from an accidental local anesthetic poisoning. This applies to situations where the initial acute phase of treatment has passed, and the patient is now in a recovery or follow-up stage. Examples include monitoring for cardiac arrhythmias or neurological deficits after an accidental overdose.

• Requires a seventh character "D" for subsequent encounter, indicating ongoing care for the poisoning.
• Distinguish from initial encounters (A) or sequela (S) for long-term effects.
• Always code the specific local anesthetic involved if known, using additional codes from categories T36-T50.