Blister of hand(s) except finger(s) alone, without mention of infection

This code signifies a fluid-filled lesion on the hand, excluding the fingers, that is not complicated by infection. It represents a localized collection of serous fluid under the epidermis, typically resulting from friction, burns, or other trauma to the non-digital areas of the hand.

Use this code for patients presenting with a non-infected blister located on the palm, back of the hand, or wrist. Documentation should clearly state the presence of a blister on the hand (excluding fingers) and explicitly or implicitly confirm the absence of infection.

• Differentiate from blisters specifically on the fingers, which have separate codes.
• Ensure documentation explicitly rules out infection; otherwise, a more specific code for infected blisters may be appropriate.
• Consider an external cause code (E-code) if the cause of the blister (e.g., friction, burn) is known and documented.