Table 1.

Classifications that include M-TMD diagnoses.

Classification	Abbr.	Publ. yr	Validated criteria	Diagnoses
Research Diagnostic Criteria for TMD	RDC/TMD	1992	Yes, partly	Myofascial pain
				Myofascial pain with limited opening
The IASP Classification of Pain	IASP	2011	No	Temporomandibular Pain and Dysfunction Syndrome
Diagnostic Criteria for TMD	DC/TMD	2014	Yes	Myalgia Local myalgia Myofascial pain Myofascial pain with referral
Expanded Taxonomy		2014	Yesa	Myalgia Local myalgia Myofascial pain Myofascial pain with referral
				Myositis
				Tendonitis
				Spasm
American Academy of Orofacial Pain	AAOP	2018 (6th ed)	Yes, partlya	Myalgia Local myalgia Myofascial pain with spreading Myofascial pain with referral
				Tendonitis
				Myositis
				Spasm
The International Classification of Headache Disorders	ICHD	2018	No	Temporomandibular disorders
International Classification of Diseases	ICD-11	2018	No	Chronic primary headache or orofacial pain
				Chronic secondary headache or orofacial pain
International Classification of Orofacial Pain	ICOP	2020	Nob	Myofascial orofacial pain
				Primary myofascial orofacial pain Acute primary myofascial orofacial pain Chronic primary myofascial orofacial pain
				Secondary myofascial orofacial pain Myofascial orofacial pain attributed to tendonitis Myofascial orofacial pain attributed to myositis Myofascial orofacial pain attributed to muscle spasm

^a DC/TMD criteria for myalgia and subdiagnoses.

^b DC/TMD criteria incorporated in diagnoses.