`M26.649` Arthritis of unspecified temporomandibular joint

Billable ICD-10-CM code, FY2026.

MS-DRG index

Defines the logic of DRG(s) 011-013 in MDC PRE.

Type 2 Excludes: M24 Other specific joint derangements ("temporomandibular joint disorders (M26.6-)")
Type 2 Excludes: M25 Other joint disorder, not elsewhere classified ("temporomandibular joint disorder (M26.6-)")

Type 2 Excludes: K08 Other disorders of teeth and supporting structures ("dentofacial anomalies [including malocclusion] (M26.-)")
Type 2 Excludes: M95 Other acquired deformities of musculoskeletal system and connective tissue ("dentofacial anomalies [including malocclusion] (M26.-)")
Type 1 Excludes: Q18 Other congenital malformations of face and neck ("dentofacial anomalies [including malocclusion] (M26.-)")
Type 1 Excludes: Q38 Other congenital malformations of tongue, mouth and pharynx ("dentofacial anomalies (M26.-)")
Type 1 Excludes: Q67.4 Other congenital deformities of skull, face and jaw ("dentofacial anomalies [including malocclusion] (M26.-)")
Type 1 Excludes: Q75 Other congenital malformations of skull and face bones ("dentofacial anomalies [including malocclusion] (M26.-)")