Q00-QA0
Congenital malformations, deformations and chromosomal abnormalities
Chapter coding notes
Excludes 2
inborn errors of metabolism (E70-E88)
Blocks in this chapter
Q00-Q07
Congenital malformations of the nervous system
Q10-Q18
Congenital malformations of eye, ear, face and neck
Q20-Q28
Congenital malformations of the circulatory system
Q30-Q34
Congenital malformations of the respiratory system
Q35-Q37
Cleft lip and cleft palate
Q38-Q45
Other congenital malformations of the digestive system
Q50-Q56
Congenital malformations of genital organs
Q60-Q64
Congenital malformations of the urinary system
Q65-Q79
Congenital malformations and deformations of the musculoskeletal system
Q80-Q89
Other congenital malformations
Q90-Q99
Chromosomal abnormalities, not elsewhere classified
QA0
Genetic disorders, not elsewhere classified
Official Guidelines for Chapter 17
FY 2026 ›Sections that reference codes in Chapter 17