Blister (nonthermal) of right ring finger, sequela

This code signifies a non-thermal blister located on the right ring finger, indicating a long-term effect or complication of a previous injury or condition. It describes a residual state rather than an acute injury.

Apply this code when documenting a patient presenting with a blister on the right ring finger that is a lasting consequence of an earlier, non-burn related event. This would be used for follow-up encounters where the blister is a chronic issue, not an acute injury.

• Always assign a seventh character of "S" for sequela when the blister is a late effect.
• Ensure the blister is specifically on the right ring finger; laterality and digit specificity are crucial.
• Confirm the blister is non-thermal in origin; thermal blisters (burns) are coded differently.