Abrasion of unspecified thumb, sequela

This code signifies a long-term or late effect resulting from a superficial injury to an unspecified thumb, characterized by a scrape or graze of the skin. It indicates that the initial abrasion has healed, but there are ongoing issues or residual conditions directly attributable to that past injury.

Apply this code when documenting a patient presenting with a current condition (e.g., scar tissue, chronic pain, altered sensation) that is a direct consequence of a previously sustained abrasion to an unspecified thumb. This code is used after the acute phase of the original injury has passed.

• Always sequence this code after the code for the specific sequela (e.g., scar, chronic pain).
• Ensure documentation clearly links the current condition to the past thumb abrasion.
• Avoid using this code for acute abrasions; it is exclusively for late effects.