Question: Encounter notes indicate the neurologist was treating a migraine patient who also suffered from “chronic hair plucking.” What is the proper ICD-10 code for this disorder? AAPC Forum Subscriber Answer: The code you’ll want for this condition is F63.3 (Trichotillomania). This is the clinical term for hair plucking. Hair plucking can be a migraine trigger for some patients. The F63.3 code is part of the F63.- (Impulse disorders) family, which also includes codes for pathological gambling, pyromania, and kleptomania, among others.