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

This code describes the long-term effects or complications arising from a non-heat-related blister on an unspecified lesser toe. It indicates that the initial blister has resolved, but there are ongoing issues directly attributable to that past injury.

This code is appropriate when a patient presents with a chronic condition, scar tissue, or functional impairment of a lesser toe that is a direct consequence of a previously healed non-thermal blister. Examples include persistent pain, altered sensation, or deformity linked to the old blister site.

• Requires a seventh character "S" to denote sequela, indicating a late effect.
• Ensure documentation clearly links the current condition to a past non-thermal blister on a lesser toe.
• Do not use for acute blisters; this code is exclusively for residual conditions.