Toxic effect of formaldehyde, accidental, sequela

This code signifies a long-term or residual effect resulting from an accidental exposure to formaldehyde. It indicates that the acute phase of the toxic effect has passed, but the patient continues to experience health issues directly attributable to the prior unintentional formaldehyde poisoning.

Apply this code when documenting a patient presenting with chronic symptoms or conditions that are sequelae of a past accidental formaldehyde exposure. Examples include persistent respiratory issues, dermatological conditions, or neurological deficits confirmed to be residual effects. Do not use for acute poisoning or intentional exposure.

• Ensure documentation clearly links the current condition to a past accidental formaldehyde exposure.
• Always code the specific sequela (e.g., chronic bronchitis, dermatitis) first, followed by this code.
• Verify the exposure was accidental and not intentional (e.g., suicide attempt), as different codes apply.