Corros unsp deg mult left fngr (nail), not inc thumb, sqla

This code signifies the long-term effects or complications resulting from a chemical burn or corrosion affecting multiple fingers on the left hand, excluding the thumb. The specific degree of the original corrosion is not documented or specified, and the sequela could manifest as scarring, contractures, chronic pain, or functional impairment of the affected fingers.

Use this code when documenting a patient presenting with a current condition that is a direct consequence of a past chemical burn to multiple left fingers (excluding the thumb), and the original burn's severity was not specified. This applies to follow-up visits for chronic issues stemming from the initial injury, even if the acute injury has healed.

• Requires a seventh character "S" to indicate sequela, meaning the current condition is a late effect of the original injury.
• Ensure documentation clearly links the current finger condition to a previous corrosion injury.
• Do not use for acute chemical burns; this code is exclusively for long-term effects.