AbstractTheApplication of the International Classification of Diseases to Dentistry and Stomatology(ICD‐DA) takes from the parent volume (the International Classification of Diseases) all those items of specific interest in regard to oral pathology whether they be common or rare conditions, or whether the pathology originates in the oral cavity or is a manifestation of a systemic disease. The initial advantage is convenience in finding the numerical classification of disease without searching through the large parent volume. However, an even greater advantage is the fact that these conditions are not sufficiently sub‐classified in the parent manual whereas in the ICD‐DA they are classified down to the five‐digit level to make differential diagnosis meaningful within the practice of de