Adverse effect of electrolytic/caloric/wtr-bal agnt, subs

This code signifies a patient experiencing an unintended and undesirable reaction to a medication primarily used to manage electrolytes, fluid balance, or nutritional intake, during a subsequent encounter for the same condition. This adverse effect is not due to an overdose or poisoning, but rather a proper administration of the agent.

Apply this code when a patient presents for follow-up care related to an adverse reaction to drugs like diuretics, intravenous fluids, or nutritional supplements, and the initial treatment for the adverse effect has already been provided. This is appropriate for ongoing management or monitoring of the adverse effect.

• Always use in conjunction with a code identifying the specific adverse effect (e.g., electrolyte imbalance, dehydration).
• Requires an external cause code (Y-code) to specify the drug causing the adverse effect.
• The "D" seventh character indicates a subsequent encounter, meaning the patient is receiving routine care during the healing or recovery phase.