Corros 2nd deg mul site of l shldr/up lmb, ex wrs/hnd, init

This code signifies a second-degree chemical burn affecting multiple areas of the patient's left shoulder and upper arm, excluding the wrist and hand. This type of injury involves damage to the epidermis and dermis, characterized by blistering, pain, and erythema.

Apply this code when documenting a patient's initial presentation for a second-degree chemical burn impacting more than one site on the left shoulder and/or upper arm (proximal to the wrist). This is appropriate for acute care settings such as emergency departments or initial outpatient visits.

• Ensure the documentation specifies "corrosion" (chemical burn) rather than a thermal burn.
• Verify that the burn is explicitly stated as "second degree" and involves multiple sites within the specified anatomical region.
• Confirm this is the initial encounter for this specific injury; subsequent encounters will require a different seventh character.