Tox eff of nitrodrv/aminodrv of benzn/homolog, slf-hrm, init

This code signifies a patient presenting with adverse health effects resulting from the deliberate ingestion, inhalation, or exposure to toxic nitroderivatives or aminoderivatives of benzene and its related compounds. The intent of self-harm is clearly documented, and this code is specifically for the initial treatment or evaluation of the poisoning.

Apply this code when a patient is admitted to the emergency department or hospital following an intentional overdose or exposure to substances like nitrobenzene, aniline, or their derivatives, with the explicit purpose of self-harm. This code is appropriate for the first encounter where the poisoning is diagnosed and initial treatment is rendered.

• Ensure documentation explicitly states "intentional self-harm" or similar phrasing to justify the "2" in the seventh character.
• Confirm this is the initial encounter for the poisoning; subsequent care would use a different seventh character.
• Always code the specific substance if known, using additional codes from categories T36-T50 if applicable, to provide greater specificity.