Extravasation of other vesicant agent, initial encounter

This code signifies tissue damage or blistering caused by the accidental leakage of a non-chemotherapeutic vesicant solution from a blood vessel into surrounding subcutaneous tissue. This extravasation can lead to pain, swelling, and potentially severe tissue necrosis if not promptly managed.

Apply this code when documenting an initial episode of extravasation involving intravenous medications or solutions known to cause tissue damage (e.g., calcium chloride, potassium chloride, hypertonic saline, certain antibiotics) that are not classified as antineoplastic agents. This code is appropriate for the first time a patient presents with or is treated for this specific event.

• Ensure the extravasated agent is explicitly documented as a non-chemotherapeutic vesicant.
• Confirm this is the initial encounter for the extravasation event; subsequent care would use a different encounter character.
• Code any associated complications (e.g., infection, necrosis) separately.