Blister (nonthermal), unspecified thigh, initial encounter

This code describes a non-burn related blister located on an unspecified area of the thigh. It indicates the initial treatment or evaluation for this particular injury.

Use this code for patients presenting with a blister on the thigh that is not caused by heat, chemicals, or radiation, such as those from friction, pressure, or an allergic reaction. This code is appropriate for the first encounter for this specific injury.

• Ensure documentation clearly states the blister is nonthermal and located on the thigh.
• Do not use if the blister is due to a burn; refer to T20-T32 codes for burn injuries.
• Append subsequent encounter (D) or sequela (S) characters for follow-up visits or complications, respectively.