Corros 2nd deg mul sites of shldr/up lmb, ex wrs/hnd, subs

This code signifies a second-degree chemical burn affecting multiple areas of the shoulder and upper limb, excluding the wrist and hand. It indicates that the patient is receiving follow-up care for this corrosion, rather than initial treatment.

Apply this code when documenting subsequent encounters for a patient being treated for a second-degree chemical burn that has affected more than one site on the shoulder and/or upper arm, forearm, or elbow. This would include situations like wound checks, dressing changes, or medication adjustments during the healing phase.

• Ensure the documentation clearly specifies "corrosion" (chemical burn) and not a thermal burn.
• Verify that multiple sites within the shoulder and upper limb (excluding wrist/hand) are affected.
• Confirm this is a subsequent encounter for ongoing care, not the initial treatment.