Blister (nonthermal) of right thumb, sequela

This code signifies a non-heat-related blister located on the right thumb, where the blister itself is a late effect or complication of a previous injury or condition. It indicates that the original cause of the blister is no longer acute, but the blister persists as a residual issue.

Use this code when documenting a patient presenting with a non-thermal blister on their right thumb that is a long-term consequence of an earlier event. This applies when the initial injury or condition that led to the blister has resolved, but the blister itself remains as a sequela.

• Always assign an additional code to describe the underlying cause of the sequela, if known and applicable.
• Ensure the documentation clearly states the blister is non-thermal and located on the right thumb.
• Verify that the blister is indeed a sequela, meaning it's a residual effect of a past condition, not an acute injury.