In simple words: This refers to a condition where fully erupted adult teeth are in the wrong position, like when teeth swap places or fuse to the jawbone.This can lead to crowded teeth, impacting appearance and gum health.Dentists diagnose this through examination and may recommend surgical correction.

This code encompasses dental conditions where fully erupted teeth exhibit positional irregularities, such as transposition (teeth exchanging positions), ankylosis (fusion with bone), or other displacements.

Example 1: A patient presents with a transposed maxillary canine and lateral incisor. The canine is located where the lateral incisor should be, and vice-versa. This condition is diagnosed as M26.3., A patient's mandibular premolar is ankylosed to the surrounding bone, hindering its normal eruption and alignment. This is coded as M26.3., A patient has several rotated fully erupted teeth causing crowding and difficulty with oral hygiene.This would be coded with M26.3 and may require further specification with M26.31 for crowding or M26.35 for rotation depending on the primary issue.

Documentation should include a detailed description of the anomaly, including which teeth are affected, the nature of the positional irregularity (transposition, ankylosis, etc.), and any associated symptoms or functional impairments.

** This code specifically refers to anomalies of fully erupted teeth and excludes embedded or impacted teeth (K01.-).More specific codes exist under M26.3 to identify crowding, spacing, displacement, and rotation if more detail is needed.