Poisoning by sulfonamides, intentional self-harm, sequela

This code signifies a long-term complication or condition resulting from an intentional self-harm poisoning event involving sulfonamide medications. It indicates that the acute phase of the poisoning has passed, and the patient is now experiencing residual effects directly attributable to that past event. These sequelae could include organ damage, neurological deficits, or other chronic health issues.

Apply this code when documenting a patient presenting with a current health problem that is a direct consequence of a previous, intentional self-harm poisoning by sulfonamides. This is used for follow-up encounters after the initial acute poisoning has been treated and the patient is being managed for the lasting effects. It should be assigned only when the sequela itself is the focus of the current encounter.

• Always assign this code as a secondary diagnosis, following the code for the specific sequela being treated.
• Ensure documentation clearly links the current condition to the past sulfonamide poisoning and specifies the intent as self-harm.
• Do not use this code for acute poisoning events; use the appropriate acute poisoning code with the 7th character for initial, subsequent, or sequela encounter.