Corros 3rd deg of shldr/up lmb, ex wrs/hnd, unsp site, subs

This code signifies a full-thickness injury to the skin and underlying tissues of the shoulder or upper limb (excluding the wrist and hand) caused by a corrosive substance. The damage extends through all layers of the skin, often resulting in charring, a leathery appearance, and nerve damage.

Use this code for follow-up encounters when a patient is receiving ongoing treatment for a third-degree corrosion to an unspecified site of the shoulder or upper limb. This includes wound care, debridement, skin grafting, or management of complications during the healing phase.

• Ensure the documentation clearly specifies "third degree" and "corrosion" as the etiology.
• Confirm the encounter is subsequent, indicating ongoing care after the initial treatment.
• If the specific site on the shoulder or upper limb is known, a more specific code should be used.