Blister (nonthermal) of left forearm, initial encounter

This code signifies a non-burn related blister located on the patient's left forearm. This type of blister is typically caused by friction, pressure, or contact with irritants, rather than heat or cold. It indicates the initial presentation and treatment of this specific injury.

Use this code for patients presenting with a blister on their left forearm that is clearly not due to a thermal injury. This would include blisters from repetitive rubbing (e.g., from tools or sports equipment), allergic contact dermatitis, or other non-thermal causes. It is appropriate for the first time this specific injury is documented and treated.

• Ensure documentation clearly specifies "left forearm" and confirms the blister is "nonthermal."
• Append additional codes for any underlying cause or associated conditions, if known and documented.
• Verify the encounter is indeed the "initial encounter" for this specific injury; subsequent encounters would require a different seventh character.