Toxic effect of phenol and phenol homologues, acc, sequela

This code signifies the long-term or residual effects resulting from an accidental exposure to phenol or its related chemical compounds. These sequelae can manifest as chronic skin conditions, organ damage, or neurological impairments that persist after the initial acute toxic event has resolved.

Apply this code when documenting conditions that are a direct consequence of a past, unintentional phenol poisoning. This includes situations where a patient presents with a chronic health problem definitively linked to an accidental exposure that occurred in the past, and the acute phase of the poisoning is no longer active.

• Always use this code as a secondary diagnosis, following the code for the specific sequela (e.g., chronic dermatitis, liver damage).
• Ensure documentation clearly states the accidental nature of the original exposure and the causal link to the current sequela.
• The "S" in the seventh character indicates sequela; do not use this code for acute or initial encounters.