Toxic effect of strychnine and its salts, self-harm, sequela

This code signifies the long-term, residual effects resulting from a deliberate act of self-poisoning with strychnine or its derivatives. These sequelae are the chronic health problems or disabilities that persist after the acute phase of the poisoning has resolved. Examples include neurological deficits, muscle weakness, or organ damage directly attributable to the strychnine exposure.

Apply this code when documenting a patient presenting with a chronic condition or permanent injury that is a direct consequence of a past, intentional self-harm attempt involving strychnine. This code is used after the acute poisoning has been treated and the patient is being managed for the lasting impact. It should be assigned in conjunction with other codes describing the specific sequelae.

• Always sequence this code after the code(s) describing the specific sequelae (e.g., neurological disorder, muscle spasm).
• Ensure documentation clearly links the current condition to a past intentional strychnine poisoning.
• Do not use this code for acute poisoning; use the appropriate acute poisoning code for the initial encounter.