Corrosion of 3rd deg mu sites of left wrs/hnd, sequela

This code signifies a third-degree chemical burn, also known as corrosion, affecting multiple distinct areas of the left wrist and hand. The "sequela" indicates that this code is used for complications or conditions arising directly from the original corrosion, after the acute phase of the injury has passed.

Apply this code when documenting long-term effects, scars, contractures, or other persistent issues resulting from a severe chemical burn to the left wrist and hand. This is appropriate for follow-up encounters where the primary focus is managing these chronic complications, rather than the initial injury treatment.

• Always use this code as a secondary diagnosis, following a code that describes the specific sequela (e.g., scar, contracture).
• Ensure documentation clearly specifies "third degree" and "multiple sites" on the left wrist and hand.
• Do not use this code for the initial treatment of the acute chemical burn; a different code from the T23 category would be appropriate for the active injury.