Blister (nonthermal) of left middle finger, sequela

This code signifies a non-heat-related blister affecting the middle finger of the left hand, representing a long-term effect or complication of an initial injury. This means the blister is not a fresh injury but rather a residual condition from a past event.

Use this code when documenting a patient presenting with a chronic or persistent blister on their left middle finger, where the original cause was not thermal (e.g., friction, chemical exposure, allergic reaction). This applies when the blister is a sequela, meaning it's a consequence of a previous injury that has resolved or is no longer acute.

• Ensure documentation clearly states the blister is on the left middle finger and is a sequela, not an acute injury.
• Verify the blister's etiology is explicitly non-thermal to differentiate from burn blisters.
• Always sequence this code after the code for the original injury or condition that led to the sequela, if still relevant.