ICD-10-CM · Chapter 17 · Q00-Q99
Congenital malformations, deformations and chromosomal abnormalities
87 categories
Category titles are WHO ICD-10 titles for the same three characters; open a category for the ICD-10-CM codes in it.
- Q00Anencephaly and similar malformations3 codes
- Q01Encephalocele5 codes
- Q02Microcephaly1 codes
- Q03Congenital hydrocephalus4 codes
- Q04Other congenital malformations of brain9 codes
- Q05Spina bifida10 codes
- Q06Other congenital malformations of spinal cord7 codes
- Q07Other congenital malformations of nervous system6 codes
- Q10Congenital malformations of eyelid, lacrimal apparatus and orbit8 codes
- Q11Anophthalmos, microphthalmos and macrophthalmos4 codes
- Q12Congenital lens malformations7 codes
- Q13Congenital malformations of anterior segment of eye9 codes
- Q14Congenital malformations of posterior segment of eye6 codes
- Q15Other congenital malformations of eye3 codes
- Q16Congenital malformations of ear causing impairment of hearing7 codes
- Q17Other congenital malformations of ear8 codes
- Q18Other congenital malformations of face and neck10 codes
- Q20Congenital malformations of cardiac chambers and connections9 codes
- Q21Congenital malformations of cardiac septa17 codes
- Q22Congenital malformations of pulmonary and tricuspid valves9 codes
- Q23Congenital malformations of aortic and mitral valves9 codes
- Q24Other congenital malformations of heart9 codes
- Q25Congenital malformations of great arteries22 codes
- Q26Congenital malformations of great veins9 codes
- Q27Other congenital malformations of peripheral vascular system12 codes
- Q28Other congenital malformations of circulatory system6 codes
- Q30Congenital malformations of nose6 codes
- Q31Congenital malformations of larynx7 codes
- Q32Congenital malformations of trachea and bronchus5 codes
- Q33Congenital malformations of lung9 codes
- Q34Other congenital malformations of respiratory system4 codes
- Q35Cleft palate5 codes
- Q36Cleft lip3 codes
- Q37Cleft palate with cleft lip8 codes
- Q38Other congenital malformations of tongue, mouth and pharynx9 codes
- Q39Congenital malformations of oesophagus9 codes
- Q40Other congenital malformations of upper alimentary tract6 codes
- Q41Congenital absence, atresia and stenosis of small intestine5 codes
- Q42Congenital absence, atresia and stenosis of large intestine6 codes
- Q43Other congenital malformations of intestine10 codes
- Q44Congenital malformations of gallbladder, bile ducts and liver10 codes
- Q45Other congenital malformations of digestive system6 codes
- Q50Congenital malformations of ovaries, fallopian tubes and broad ligaments10 codes
- Q51Congenital malformations of uterus and cervix18 codes
- Q52Other congenital malformations of female genitalia19 codes
- Q53Undescended testicle14 codes
- Q54Hypospadias7 codes
- Q55Other congenital malformations of male genital organs18 codes
- Q56Indeterminate sex and pseudohermaphroditism5 codes
- Q60Renal agenesis and other reduction defects of kidney7 codes
- Q61Cystic kidney disease11 codes
- Q62Congenital obstructive defects of renal pelvis and congenital malformations of ureter17 codes
- Q63Other congenital malformations of kidney6 codes
- Q64Other congenital malformations of urinary system22 codes
- Q65Congenital deformities of hip15 codes
- Q66Congenital deformities of feet32 codes
- Q67Congenital musculoskeletal deformities of head, face, spine and chest9 codes
- Q68Other congenital musculoskeletal deformities8 codes
- Q69Polydactyly4 codes
- Q70Syndactyly18 codes
- Q71Reduction defects of upper limb40 codes
- Q72Reduction defects of lower limb44 codes
- Q73Reduction defects of unspecified limb3 codes
- Q74Other congenital malformations of limb(s)6 codes
- Q75Other congenital malformations of skull and face bones22 codes
- Q76Congenital malformations of spine and bony thorax21 codes
- Q77Osteochondrodysplasia with defects of growth of tubular bones and spine10 codes
- Q78Other osteochondrodysplasias9 codes
- Q79Congenital malformations of the musculoskeletal system, not elsewhere classified14 codes
- Q80Congenital ichthyosis7 codes
- Q81Epidermolysis bullosa5 codes
- Q82Other congenital malformations of skin9 codes
- Q83Congenital malformations of breast6 codes
- Q84Other congenital malformations of integument9 codes
- Q85Phakomatoses, not elsewhere classified11 codes
- Q86Congenital malformation syndromes due to known exogenous causes, not elsewhere classified4 codes
- Q87Other specified congenital malformation syndromes affecting multiple systems20 codes
- Q89Other congenital malformations, not elsewhere classified10 codes
- Q90Down syndrome4 codes
- Q91Edwards syndrome and Patau syndrome8 codes
- Q92Other trisomies and partial trisomies of the autosomes, not elsewhere classified9 codes
- Q93Monosomies and deletions from the autosomes, not elsewhere classified14 codes
- Q95Balanced rearrangements and structural markers, not elsewhere classified7 codes
- Q96Turner syndrome7 codes
- Q97Other sex chromosome abnormalities, female phenotype, not elsewhere classified6 codes
- Q98Other sex chromosome abnormalities, male phenotype, not elsewhere classified9 codes
- Q99Other chromosome abnormalities, not elsewhere classified10 codes
ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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