Blister (nonthermal), left lower leg, sequela

This code signifies a non-burn related blister located on the left lower leg, where the blister itself is a residual effect or complication of a previous injury or condition. It indicates that the blister is not an acute event but rather a long-term consequence.

Use this code when documenting a patient presenting with a blister on their left lower leg that is clearly identified as a sequela, meaning it's a chronic or late effect of an earlier issue. This would apply, for example, to a blister that developed months after a severe allergic reaction or a prolonged period of pressure, and is now considered a persistent problem.

• Always sequence this code after the code for the original injury or condition that caused the sequela, if known and still relevant.
• Ensure documentation clearly states the blister is a "sequela" or "late effect" and specifies the left lower leg.
• Distinguish from acute blisters (e.g., from friction or contact dermatitis) which would use different codes.