Dentofacial anomalies [including malocclusion] and other disorders of jaw - M26-M27
Excludes1: It indicates that the conditions described by two codes cannot occur together in the same patient. These codes are mutually exclusive.
Type 1 Excludes:
- hemifacial atrophy or hypertrophy (Q67.4)
- unilateral condylar hyperplasia or hypoplasia (M27.8)
These ranges represents Categories of Dentofacial anomalies [including malocclusion] and other disorders of jaw. The "M26-M27" signifies that these are the diseases within this broad section.