Corrosion of first degree of unspecified thigh, init encntr

This code signifies a superficial burn injury, specifically a first-degree corrosion, affecting an unspecified area of the thigh. A first-degree burn involves only the epidermis, presenting with redness, mild swelling, and pain, but no blistering. "Corrosion" indicates the injury was caused by a chemical agent rather than heat.

Apply this code when documenting a patient's initial presentation for a first-degree chemical burn to the thigh, where the specific location on the thigh (e.g., anterior, posterior) is not specified in the medical record. This is appropriate for acute chemical exposures resulting in superficial skin damage.

• Ensure the documentation clearly states "first degree" and "corrosion" to support this code.
• Only use the "A" (initial encounter) seventh character for the first time the patient is seen for this specific injury.
• If the specific site on the thigh is documented (e.g., right anterior thigh), a more specific code should be selected.