Blister (nonthermal) of right ear, subsequent encounter

This diagnosis code indicates a non-thermal blister located on the patient's right ear. It signifies that the patient is receiving follow-up care for this specific blister after the initial treatment phase.

Apply this code for encounters where a patient is being seen for continued care, healing, or complications related to a previously diagnosed non-thermal blister of the right ear. Documentation should clearly state "right ear," "blister," "non-thermal etiology," and indicate a subsequent visit (e.g., "follow-up," "healing check," "dressing change").

• Ensure the documentation specifies "right ear" and "non-thermal" to differentiate from other ear injuries or thermal burns.
• The 7th character "D" is crucial for subsequent encounters; use "A" for initial encounters and "S" for sequela.
• Do not confuse with codes for otitis externa or other inflammatory conditions of the ear that are not explicitly described as blisters.