ICD-10 / XVII Congenital malformations, deformations and chromosomal abnormalities / Q30-Q34 Congenital malformations of the respiratory system / Q31 Congenital malformations of larynx / Q31.2 Laryngeal hypoplasiaFrom parent levelsChapterXVIICongenital malformations, deformations and chromosomal abnormalitiesOpenExclusionsinborn errors of metabolism (E70-E90)BlockQ30-Q34Congenital malformations of the respiratory systemOpenCategoryQ31Congenital malformations of larynxOpenExclusionscongenital (laryngeal) stridor NOS (P28.8)Q31.2CategoryBlock Q30-Q34Chapter XVIILaryngeal hypoplasia