Extravasation of vesicant antineopl chemotherapy, sequela

This code signifies a long-term or late-developing complication resulting from the accidental leakage of a vesicant antineoplastic chemotherapy drug from a vein into surrounding tissue. This extravasation can lead to significant tissue damage, including blistering, necrosis, and ulceration, which may manifest months or even years after the initial event. The "S" in the code indicates that this is a sequela, meaning a residual condition after the acute phase has passed.

Assign this code when documenting chronic or persistent tissue damage, such as scarring, contractures, chronic pain, or functional impairment, directly attributable to a past extravasation of vesicant chemotherapy. This code is appropriate for follow-up encounters addressing these long-term effects, not for the initial acute extravasation event.

• Always use this code as a secondary diagnosis, following the code for the specific sequela (e.g., scar, ulcer).
• Ensure documentation clearly links the current condition to a past extravasation of vesicant chemotherapy.
• Do not use for acute extravasation; separate codes exist for immediate complications.