Unspecified superficial injury of unspecified thumb, sequela

This code signifies a long-term complication or late effect resulting from a superficial injury to an unspecified thumb. The original injury was not specified beyond being superficial, and its exact nature (e.g., abrasion, contusion, blister) is unknown. The sequela could manifest as chronic pain, scarring, or functional limitations directly attributable to the past injury.

Use this code when documenting a patient presenting with a current condition that is a direct consequence of a previously sustained, unspecified superficial thumb injury. This is appropriate when the acute phase of the original injury has passed, and the current encounter addresses the residual effects. It is also applicable when the specific thumb (left or right) is not documented.

• Always sequence this code after the code for the specific sequela being treated.
• Avoid using this code for acute injuries; it is strictly for late effects.
• Only use when the laterality of the thumb and the specific type of superficial injury are truly unknown or unspecifiable in the medical record.