Question: What is complicated headache syndrome? How do I choose an ICD-10 code for the condition? AAPC Forum Subscriber Answer: According to Codify by AAPC, complicated headache syndrome “refers to very rare headache disorders that are severe and/or persistent, difficult to diagnose and/or treat, and are often complicated by overlying or underlying symptoms.” The ICD-10 codes for these syndromes begins at G44.5- (Complicated headache syndromes), but goes deeper than that.
Under G44.5-, ICD-10 lists the following options for further specificity: Last resort: If you cannot peg your patient’s headache syndrome to one of the aforementioned codes, choose G44.59 (Other complicated headache syndrome) instead.