Blister (nonthermal) of left elbow, sequela

This code signifies a non-thermal blister located on the left elbow that is a residual effect or complication of a previous injury or condition. It indicates that the blister is not a result of a burn or frostbite, but rather a long-term consequence of an earlier event.

Use this code when documenting a patient presenting with a blister on their left elbow that is clearly identified as a sequela. This applies when the blister is a chronic or late-appearing manifestation of a past trauma, infection, or other non-thermal etiology affecting the elbow.

• Ensure documentation explicitly states the blister is a "sequela" or "late effect" of a prior condition.
• Always code the underlying cause of the original injury or condition that led to the sequela, if known and still relevant.
• Distinguish from acute blisters or those due to thermal causes, which have different code assignments.