M26.59 Other dentofacial functional abnormalities

Billable ICD-10-CM code, FY2026.

Applicable to

• Centric occlusion (of teeth) NOS
• Malocclusion due to abnormal swallowing
• Malocclusion due to mouth breathing
• Malocclusion due to tongue, lip or finger habits

Applies from M26.5 Dentofacial functional abnormalities

Excludes1 (never code together)

• bruxism (F45.8)
• teeth-grinding NOS (F45.8)

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 524.59 Other dentofacial functional abnormalities

Code annotations containing back-references to M26.59

Back-references to M26.59

• Type 1 Excludes: M26.55 Centric occlusion maximum intercuspation discrepancy ("centric occlusion NOS (M26.59)")

Back-references to M26

• 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.-)")

Diagnosis Index entries for M26.59

• Anomaly, anomalous (congenital) (unspecified type) › dentofacial › functional › specified NEC
• Breathing › mouth › causing malocclusion
• Malocclusion (teeth) › due to › abnormal swallowing
• Malocclusion (teeth) › due to › mouth breathing
• Malocclusion (teeth) › due to › tongue, lip or finger habits
• Occlusion, occluded › centric (of teeth)

Nearby codes

• M26.53 Deviation in opening and closing of the mandible
• M26.54 Insufficient anterior guidance
• M26.55 Centric occlusion maximum intercuspation discrepancy
• M26.56 Non-working side interference
• M26.57 Lack of posterior occlusal support
• M26.59 Other dentofacial functional abnormalities (this code)
• M26.6 Temporomandibular joint disorders
• M26.60 Temporomandibular joint disorder, unspecified
• M26.601 Right temporomandibular joint disorder, unspecified
• M26.602 Left temporomandibular joint disorder, unspecified
• M26.603 Bilateral temporomandibular joint disorder, unspecified