Toxic effect of formaldehyde, assault, sequela

This code signifies a long-term or residual health effect resulting from formaldehyde poisoning that occurred due to an intentional act of harm by another person. It indicates that the patient is experiencing ongoing symptoms or conditions directly attributable to a past formaldehyde exposure that was an assault.

Use this code for follow-up encounters when a patient presents with chronic respiratory issues, dermatological conditions, or other persistent health problems previously diagnosed as resulting from an assault involving formaldehyde. This code is appropriate once the acute phase of the poisoning has resolved and the patient is being managed for the lasting sequelae.

• Always sequence this code after the code(s) for the specific sequela being treated (e.g., chronic bronchitis, dermatitis).
• Ensure documentation clearly links the current condition to a past formaldehyde assault and indicates the chronic nature of the issue.
• Verify the encounter is for the sequela and not for the initial acute poisoning or an active assault.