Poisn by electrolytic/caloric/wtr-bal agnt, assault, subs

This code signifies a poisoning event resulting from an intentional act of harm involving substances that affect electrolytes, calorie balance, or water balance within the body. The "subsequent encounter" designation indicates that the patient is receiving follow-up care for the sequelae or ongoing treatment related to the initial poisoning, not the initial acute presentation.

This code is appropriate for documenting care provided to a patient who was intentionally poisoned by agents such as diuretics, laxatives, antacids, or substances causing electrolyte imbalances (e.g., potassium, sodium) or affecting hydration, and is now in a recovery or ongoing management phase. This includes follow-up appointments, medication adjustments, or monitoring for long-term complications after the initial acute treatment.

• Ensure the documentation clearly states the poisoning was an assault and that this is not the initial acute care visit.
• Always code the specific substance(s) involved if known, using additional T codes.
• Consider external cause codes (X codes) to further specify the circumstances of the assault.