Blister (nonthermal) of left wrist, subsequent encounter

This code indicates a non-burn related blister located on the left wrist that is being treated during a follow-up visit. This could be due to friction, irritation, or other non-thermal causes, and the patient is no longer in the initial phase of care for this specific injury.

Use this code for a patient presenting for a re-evaluation, dressing change, or continued management of a non-thermal blister on their left wrist. This applies after the initial encounter for the injury has already been coded. It is appropriate when the blister is still present and requires ongoing medical attention.

• Ensure the documentation clearly specifies "left wrist" and "nonthermal" etiology.
• Confirm this is a subsequent encounter, not the initial treatment for the blister.
• Verify that the blister is not a result of a burn, as burn blisters have different coding pathways.