M26.3Anomalies of tooth position of fully erupted tooth or teeth

M26.3 is the ICD-10-CM diagnosis code for anomalies of tooth position of fully erupted tooth or teeth. It belongs to category M26 (dentofacial anomalies [including malocclusion]), block M26-M27 (dentofacial anomalies [including malocclusion] and other disorders of jaw) and chapter 13 (diseases of the musculoskeletal system and connective tissue). It is a header code, so it can't be reported by itself; one of its 9 subcodes must be used instead.

Within M26 (dentofacial anomalies [including malocclusion]), M26.3 is specifically for anomalies of tooth position of fully erupted tooth or teeth. Related codes cover major anomalies of jaw size (M26.0), anomalies of jaw-cranial base relationship (M26.1), anomalies of dental arch relationship (M26.2), malocclusion, unspecified (M26.4), dentofacial functional abnormalities (M26.5), temporomandibular joint disorders (M26.6), dental alveolar anomalies (M26.7), other dentofacial anomalies (M26.8) and 1 more.

To report this condition, pick the subcode that matches the documentation: M26.30 (teeth), M26.31 (teeth), M26.32 (teeth), M26.33 (teeth), M26.34 (teeth), M26.35 (teeth), M26.36 ((ridge)), M26.37 (teeth) and 1 more.

The conditions in its Excludes2 note aren't part of M26.3, but may be coded alongside it if the patient has both: embedded and impacted teeth (K01.-).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.