Adverse effect of other psychodysleptics, initial encounter

This code signifies an undesirable or harmful reaction experienced by a patient due to the therapeutic use of a hallucinogenic substance, such as LSD or psilocybin, when initially presenting for care. It indicates that the substance was taken as prescribed or intended, but resulted in an adverse outcome.

Apply this code when a patient presents to an emergency department or clinic with symptoms like psychosis, severe anxiety, panic attacks, or flashbacks directly attributable to a prescribed or medically administered hallucinogen. This is for the initial visit where the adverse effect is first identified and treated.

• Ensure documentation clearly states the hallucinogen was taken therapeutically or as intended, not recreationally.
• Pair this code with a code for the specific manifestation of the adverse effect (e.g., F23 for acute psychotic disorder).
• Remember the "A" seventh character denotes an initial encounter for this adverse effect.