Tox eff of corrosv alkalis & alk-like substnc, slf-hrm, subs

This code signifies a harmful reaction to corrosive alkaline substances, such as lye or strong cleaning agents, that was deliberately self-inflicted. It specifically applies to encounters following the initial treatment of the poisoning, indicating ongoing care or complications. The patient intentionally ingested, inhaled, or came into contact with the substance to cause self-harm.

Use this code when documenting follow-up care for a patient who intentionally poisoned themselves with an alkaline corrosive. This includes subsequent visits for managing esophageal strictures, gastric perforations, or other long-term effects resulting from the initial self-harm attempt. It is appropriate for any encounter after the acute phase of treatment.

• Always assign an additional code for the specific corrosive substance if known (e.g., T54.2X1- for corrosive acids).
• Ensure the "D" seventh character is used for subsequent encounters, indicating ongoing treatment or recovery.
• Do not use this code for accidental exposures or assaults; those require different intent characters.