Toxic effect of nitrogen oxides, assault, sequela

This code signifies the long-term or residual health problems resulting from a deliberate act of poisoning by nitrogen oxides. These persistent effects can manifest in various organ systems, such as chronic respiratory issues, neurological damage, or other lasting complications.

Apply this code when documenting a patient presenting with a current health condition that is a direct consequence of a past assault involving nitrogen oxides. This is used for follow-up encounters after the acute phase of the poisoning has resolved, and the patient is dealing with the lasting sequelae.

• Always sequence this sequela code after the code(s) for the specific residual condition(s) being treated.
• Ensure documentation clearly links the current condition to a past assault involving nitrogen oxides.
• Do not use this code for acute poisoning; refer to the appropriate acute toxic effect codes for initial encounters.