Adverse effect of amphetamines, initial encounter

This code signifies an undesirable or harmful reaction experienced by a patient due to the therapeutic use of amphetamines. This includes side effects, allergic reactions, or other adverse responses when the drug was administered correctly. It specifically denotes the first time the patient is being treated for this particular adverse effect.

Apply this code when a patient presents for initial evaluation and treatment of symptoms directly attributable to an adverse reaction to prescribed or appropriately administered amphetamines. Examples include tachycardia, hypertension, anxiety, or psychosis developing after taking a prescribed amphetamine. This code is appropriate for the initial encounter for managing these adverse effects.

• Always sequence this code after the code for the specific manifestation of the adverse effect (e.g., R00.0 for tachycardia).
• Do not use this code for poisoning, overdose, or underdosing; those scenarios require different T-codes.
• Ensure documentation clearly links the patient's symptoms to an adverse effect of amphetamine use, not abuse or misuse.