Blister (nonthermal) of unspecified hand, initial encounter

This code signifies a non-burn related fluid-filled lesion on an unspecified hand. It indicates the initial presentation or treatment for this particular blister.

This code is appropriate for documenting a patient's first visit for a blister on the hand where the specific location (e.g., right vs. left, finger vs. palm) is not documented or is unknown. It's used when the blister is not caused by heat, chemicals, or radiation.

• Ensure documentation clearly states the blister is non-thermal and the encounter is initial.
• Avoid using this code if the specific hand (right or left) is documented; instead, use a more specific code.
• If the cause of the blister is known and documented (e.g., friction, insect bite), consider if a more specific etiology code is also warranted.