Blister (nonthermal), left hip, sequela

This code describes a non-heat-related blister located on the left hip, indicating a long-term complication or residual effect from a previous injury or condition. It signifies that the blister is not a new, acute event but rather a persistent or late-appearing manifestation.

Use this code when documenting a patient presenting with a blister on their left hip that is clearly identified as a sequela of an earlier, resolved injury or condition, and not due to a recent thermal exposure. This would apply to chronic blistering conditions, or blisters that develop months or years after an initial trauma.

• Ensure documentation clearly links the blister to a previous injury or condition, and specifies "sequela."
• Verify the laterality is precisely "left hip."
• Do not use for acute blisters or blisters caused by burns/frostbite.