In simple words: Macrocheilia is a condition present from birth where one or both lips are abnormally large.

Macrocheilia is a congenital condition characterized by the excessive growth or enlargement of one or both lips.

Example 1: A newborn infant is noted to have significant enlargement of the upper lip, diagnosed as congenital macrocheilia., A child presents with persistent lip swelling, affecting their speech and eating. After examination and imaging, they are diagnosed with macrocheilia., An adult with a history of macrocheilia since birth seeks surgical correction for cosmetic reasons.

Documentation should include details about the size and location of the lip enlargement, any associated functional impairments (e.g., speech, feeding difficulties), and any family history of similar conditions. Imaging studies (e.g., ultrasound, MRI) may be necessary to assess the extent of the involvement and rule out other causes.

** Conditions excluded from Q18.6 include cleft lip and palate (Q35-Q37), congenital malformations of skull and face bones (Q75.-), and other specific facial anomalies. Macrocheilia can be associated with various syndromes, including Ascher syndrome and Melkersson-Rosenthal syndrome, so it is essential to evaluate for other related conditions.