Blister (nonthermal), right great toe, sequela

This code indicates a non-heat-related blister located specifically on the right great toe, representing a long-term effect or complication of an initial injury or condition. It signifies that the blister is no longer an acute issue but rather a residual problem from a past event.

Use this code when documenting a chronic or persistent blister on the right great toe that is a direct consequence of a previous injury or condition, and the acute phase of that injury has passed. This is appropriate for follow-up encounters where the blister is being managed as a sequela.

• Ensure documentation clearly states the blister is on the right great toe and is a sequela, not an acute injury.
• Always code the underlying cause of the original injury or condition that led to the sequela, if known and still relevant.
• Distinguish carefully between acute blisters and sequelae; sequela codes are for residual effects after the acute phase.