Blister (nonthermal) of right middle finger, sequela

This code signifies a non-heat-related blister affecting the right middle finger, where the blister itself is a late effect or complication of a previous injury or condition. This indicates that the blister is not an acute presentation but rather a residual problem from an earlier event.

Apply this code when documenting a patient presenting with a blister on their right middle finger that is clearly identified as a long-term consequence of a prior injury, infection, or other non-thermal event. This is appropriate when the original cause of the blister is no longer active, and the blister is a persistent or recurring issue.

• Ensure documentation explicitly states the blister is a "sequela" or "late effect" of a previous non-thermal event.
• Verify the laterality (right) and specific digit (middle finger) are clearly documented.
• Do not use this code for acute, currently forming, or thermally induced blisters.