Headache or orofacial pain associated with chronic secondary temporomandibular disorders (Q47488)

Chronic secondary temporomandibular disorder pain is chronic pain in the temporomandibular joint(s) or masseter or temporalis muscle(s) associated with persistent inflammation (due to e.g. infection, crystal deposition or autoimmune disorders), structural changes (such as osteoarthritis or spondylosis), injury, or diseases of the nervous system. It occurs on at least 50% of the days during at least three months. The duration of pain per day is at least 2 hours. If the etiology is vague, consider using codes in the section of chronic primary pain.