Corros 3rd deg mu sites of r shldr/up lmb, ex wrs/hnd, subs

This code signifies a severe, full-thickness chemical burn affecting multiple areas of the patient's right shoulder and upper arm, excluding the wrist and hand. The injury involves destruction of all skin layers and underlying tissue, often requiring extensive medical intervention.

Apply this code for follow-up encounters (e.g., subsequent hospital visits, clinic appointments for wound care, or physical therapy) related to the initial third-degree chemical burn of the specified right upper limb regions. This indicates ongoing treatment or recovery from the initial corrosive injury.

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