Blister (nonthermal), left lesser toe(s), sequela

This code signifies a non-heat-related blister affecting one or more of the smaller toes on the left foot. It indicates that the blister is a residual effect or complication of a previous injury or condition, rather than an acute occurrence. This could include scarring, chronic pain, or functional impairment resulting from the original blister.

Use this code when documenting a patient presenting with a long-term consequence or persistent issue directly attributable to a past non-thermal blister on their left lesser toe(s). This is appropriate for follow-up visits addressing chronic symptoms or complications that arose after the initial blister healed.

• Ensure documentation clearly states the blister is non-thermal and located on the left lesser toe(s).
• The "S" in the 7th character indicates a sequela, meaning the current encounter is for a complication or residual effect of the original blister.
• Do not use for acute blisters; those require an initial or subsequent encounter character.