Complete traumatic MCP amputation of left thumb, init

This code signifies the complete severance of the left thumb at the metacarpophalangeal (MCP) joint due to a traumatic injury. This means the entire thumb, including the bone and soft tissues, has been completely detached from the hand.

Assign this code for initial encounters with patients presenting with a traumatic, full-thickness amputation of their left thumb at the MCP joint. This applies whether the patient arrives with the amputated digit or it is confirmed during examination following a severe injury.

• Ensure documentation specifies "complete" amputation at the MCP joint of the left thumb.
• Verify this is the initial encounter for this specific injury; subsequent care would require a different seventh character.
• Distinguish from partial amputations or amputations at other thumb joints (e.g., interphalangeal).