Blister (nonthermal) of left little finger, sequela

This code signifies a non-thermal blister located specifically on the left little finger, which is a sequela. A sequela indicates a condition that is the late effect of an earlier injury or illness, meaning the original acute injury has healed but this blister is a residual problem.

Use this code when documenting a patient presenting with a blister on their left little finger that is not due to a burn or frostbite, and is a long-term consequence of a previous injury or condition. This would apply in cases where the initial injury has resolved, but this specific blister is a chronic or recurring issue directly attributable to that past event.

• Ensure the medical record clearly documents the blister's non-thermal origin and its specific location on the left little finger.
• Verify that the documentation explicitly links the blister to a previous injury or condition to support the "sequela" designation.
• Always code the underlying cause of the sequela first, if known and still relevant, followed by this code.