Corrosion of unspecified degree of nose (septum), sequela

This code signifies a long-term complication or residual effect resulting from a chemical burn of the nasal septum, where the original burn's severity was not documented. It indicates that the acute injury has healed, but a lasting issue related to the corrosion persists.

Apply this code when documenting a patient presenting with a chronic condition, scar tissue, perforation, or other persistent sequela directly attributable to a past corrosive chemical injury to the nasal septum. This is used when the initial burn's degree was unspecified in the medical record.

• Requires a seventh character "S" for sequela, indicating a late effect.
• Do not use for acute chemical burns; this code is exclusively for residual conditions.
• Always attempt to identify the specific degree of the original burn if possible, as more specific codes exist.