0000929 Abnormality of the skull	0009122 Aplasia/hypoplasia affecting bones of the axial skeleton
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0009116 Aplasia/Hypoplasia involving bones of the skull

0009117 Aplasia/Hypoplasia of the maxilla

0009118 Aplasia/Hypoplasia of the mandible 2

0009120 Aplasia/Hypoplasia involving the sinuses 2