Many things lurk in the ocean waters; among them, jellyfish who mean no harm but whose sting can cause some serious pain. Should your patient come in contact with this gelatinous creature of the sea, use this code to indicate the toxic effect of the sting, which commonly causes red marks, itching, numbness, and, in some cases, difficulty breathing or swallowing. To bill for such an incident, be sure to add specificity: initial encounter (T63.621A), subsequent encounter (T63.621D), or sequela (T63.621S).
