Blister of foot and toe(s), without mention of infection

This code signifies a localized collection of fluid (serum or blood) beneath the epidermis of the foot or toes, resulting from friction, burns, or other trauma, without any signs of bacterial or fungal infection. It represents a superficial skin injury characterized by a raised, fluid-filled lesion.

Use this code for patients presenting with a non-infected blister on any part of the foot or toes. Documentation should clearly state "blister," specify the location as foot or toe(s), and explicitly or implicitly indicate the absence of infection (e.g., no mention of pus, erythema, warmth, or fever).

• Differentiate from infected blisters, which require a more specific code.
• Ensure documentation specifies the foot or toe(s) as the anatomical site.
• Consider an external cause code (E-code) if the cause of the blister (e.g., ill-fitting shoes, burn) is known and documented.