Blister (nonthermal) of right hand, sequela

This code signifies a non-heat-related fluid-filled lesion on the right hand that is a residual effect or complication of a previous injury or condition. The blister itself is no longer acute but represents a lasting consequence.

Apply this code when documenting a chronic or permanent blister on the right hand resulting from a past event, such as a resolved friction injury, chemical exposure, or allergic reaction. This is appropriate for follow-up encounters where the blister is a persistent issue.

• Ensure the medical record clearly indicates the blister is a sequela, not an acute condition.
• Always specify the laterality (right hand) as per the code description.
• Consider additional codes for the original cause of the blister if still relevant and documented.