Drug induced tics

This code signifies the presence of involuntary, repetitive, non-rhythmic movements or vocalizations (tics) that are a direct adverse effect of a prescribed or illicit drug. These tics can manifest as simple motor tics (e.g., eye blinking, head jerking), complex motor tics (e.g., jumping, touching), simple vocal tics (e.g., sniffing, grunting), or complex vocal tics (e.g., repeating words, uttering phrases).

Apply this code when documentation clearly links the onset or exacerbation of tics to a specific medication or substance. This typically occurs after initiation of a new drug, an increase in dosage, or withdrawal from a substance. Supporting documentation should include a detailed medication history and a physician's assessment confirming the drug-induced nature of the tics, ruling out other causes.

• Always sequence this code after the code for the adverse effect of the drug (T36-T50 with 5th or 6th character 5).
• Do not use this code for tics due to underlying neurological conditions or primary tic disorders (e.g., Tourette's syndrome).
• Ensure the documentation specifies the drug causing the tics for proper sequencing with the adverse effect code.