Blister (nonthermal), unspecified hip, sequela

This code describes a non-heat-related fluid-filled lesion on an unspecified hip that is a residual effect or complication of a previous injury or condition. This blister is not due to burns, frostbite, or other thermal causes, and its exact location on the hip is not specified.

Use this code when documenting a blister on the hip that is clearly identified as a sequela, meaning it's a late effect of an earlier injury or disease. This would apply, for example, to a blister that developed months after a severe skin infection or trauma to the hip area, where the initial acute condition has resolved.

• Always ensure documentation explicitly states the blister is a "sequela" or "late effect" of a previous condition.
• Verify that the blister is non-thermal; if thermal, a burn or frostbite code would be more appropriate.
• If the specific hip (right or left) is documented, a more specific code should be used.