Blister (nonthermal) of vagina and vulva, initial encounter

This code signifies a non-burn related blister affecting the external female genitalia (vulva) and/or the internal female reproductive canal (vagina). These lesions are typically fluid-filled sacs on the skin or mucous membranes, resulting from friction, irritation, or certain skin conditions, rather than heat exposure.

Apply this code when documenting the initial presentation and treatment of a patient with a blister on the vulva or vagina that is explicitly stated as not being caused by a thermal injury. This includes blisters arising from allergic reactions, contact dermatitis, or mechanical trauma.

• Ensure the medical record clearly specifies "nonthermal" as the cause of the blister.
• Verify that this is the patient's first encounter for this specific injury.
• Look for documentation of the blister's location as either vulva, vagina, or both.