Poisn by electrolytic/caloric/wtr-bal agnt, self-harm, subs

This code signifies a poisoning event resulting from the deliberate self-administration of substances that disrupt the body's electrolyte, caloric, or water balance. This includes agents like diuretics, laxatives, or excessive water intake, leading to conditions such as hyponatremia, hyperkalemia, or severe dehydration. The "subsequent encounter" indicates that this code is used for follow-up care after the initial treatment of the poisoning.

Apply this code when a patient presents for ongoing management, monitoring, or treatment of complications arising from a prior intentional self-harm poisoning involving electrolytic, caloric, or water-balance agents. This would include follow-up appointments for electrolyte imbalances, renal dysfunction, or cardiac arrhythmias directly attributable to the initial poisoning. It is appropriate for encounters occurring after the acute phase of treatment has concluded.

• Ensure documentation clearly states the poisoning was intentional self-harm and that the encounter is not the initial treatment.
• Always code the specific substance(s) involved if known, using additional ICD-10-CM codes.
• Do not use this code for accidental poisonings or poisonings with undetermined intent.