Q00-QA0
ICD-10-CM Chapter 17: Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders
Chapter 17 of the ICD-10-CM tabular list covers Q00-QA0. It contains 12 blocks of related categories, listed below with the categories published in each.
Excludes2
Not included here. The condition is not part of this code, but a patient may have both, and both codes may be reported together.
- inborn errors of metabolism (E70-E88)
Notes
- Codes from this chapter are not for use on maternal records
Q00-Q07 — Congenital malformations of the nervous system
- Q00Anencephaly and similar malformationscategory
- Q01Encephalocelecategory
- Q02Microcephaly
- Q03Congenital hydrocephaluscategory
- Q04Other congenital malformations of braincategory
- Q05Spina bifidacategory
- Q06Other congenital malformations of spinal cordcategory
- Q07Other congenital malformations of nervous systemcategory
Q10-Q18 — Congenital malformations of eye, ear, face and neck
- Q10Congenital malform of eyelid, lacrimal apparatus and orbitcategory
- Q11Anophthalmos, microphthalmos and macrophthalmoscategory
- Q12Congenital lens malformationscategory
- Q13Congenital malformations of anterior segment of eyecategory
- Q14Congenital malformations of posterior segment of eyecategory
- Q15Other congenital malformations of eyecategory
- Q16Congenital malform of ear causing impairment of hearingcategory
- Q17Other congenital malformations of earcategory
- Q18Other congenital malformations of face and neckcategory
Q20-Q28 — Congenital malformations of the circulatory system
- Q20Congenital malformations of cardiac chambers and connectionscategory
- Q21Congenital malformations of cardiac septacategory
- Q22Congenital malformations of pulmonary and tricuspid valvescategory
- Q23Congenital malformations of aortic and mitral valvescategory
- Q24Other congenital malformations of heartcategory
- Q25Congenital malformations of great arteriescategory
- Q26Congenital malformations of great veinscategory
- Q27Other congenital malformations of peripheral vascular systemcategory
- Q28Other congenital malformations of circulatory systemcategory
Q30-Q34 — Congenital malformations of the respiratory system
Q35-Q37 — Cleft lip and cleft palate
Q38-Q45 — Other congenital malformations of the digestive system
- Q38Other congenital malformations of tongue, mouth and pharynxcategory
- Q39Congenital malformations of esophaguscategory
- Q40Other congenital malformations of upper alimentary tractcategory
- Q41Congenital absence, atresia and stenosis of small intestinecategory
- Q42Congenital absence, atresia and stenosis of large intestinecategory
- Q43Other congenital malformations of intestinecategory
- Q44Congenital malform of gallbladder, bile ducts and livercategory
- Q45Other congenital malformations of digestive systemcategory
Q50-Q56 — Congenital malformations of genital organs
- Q50Congen malform of ovaries, fallopian tubes & broad ligamentscategory
- Q51Congenital malformations of uterus and cervixcategory
- Q52Other congenital malformations of female genitaliacategory
- Q53Undescended and ectopic testiclecategory
- Q54Hypospadiascategory
- Q55Other congenital malformations of male genital organscategory
- Q56Indeterminate sex and pseudohermaphroditismcategory
Q60-Q64 — Congenital malformations of the urinary system
Q65-Q79 — Congenital malformations and deformations of the musculoskeletal system
- Q65Congenital deformities of hipcategory
- Q66Congenital deformities of feetcategory
- Q67Congenital ms deformities of head, face, spine and chestcategory
- Q68Other congenital musculoskeletal deformitiescategory
- Q69Polydactylycategory
- Q70Syndactylycategory
- Q71Reduction defects of upper limbcategory
- Q72Reduction defects of lower limbcategory
- Q73Reduction defects of unspecified limbcategory
- Q74Other congenital malformations of limb(s)category
- Q75Other congenital malformations of skull and face bonescategory
- Q76Congenital malformations of spine and bony thoraxcategory
- Q77Osteochndrdys w defects of growth of tubular bones and spinecategory
- Q78Other osteochondrodysplasiascategory
- Q79Congenital malformations of musculoskeletal system, NECcategory
Q80-Q89 — Other congenital malformations
- Q80Congenital ichthyosiscategory
- Q81Epidermolysis bullosacategory
- Q82Other congenital malformations of skincategory
- Q83Congenital malformations of breastcategory
- Q84Other congenital malformations of integumentcategory
- Q85Phakomatoses, not elsewhere classifiedcategory
- Q86Congen malform syndromes due to known exogenous causes, NECcategory
- Q87Oth congenital malform syndromes affecting multiple systemscategory
- Q89Other congenital malformations, not elsewhere classifiedcategory
Q90-Q99 — Chromosomal abnormalities, not elsewhere classified
- Q90Down syndromecategory
- Q91Trisomy 18 and Trisomy 13category
- Q92Oth trisomies and partial trisomies of the autosomes, NECcategory
- Q93Monosomies and deletions from the autosomes, NECcategory
- Q95Balanced rearrangements and structural markers, NECcategory
- Q96Turner's syndromecategory
- Q97Oth sex chromosome abnormalities, female phenotype, NECcategory
- Q98Oth sex chromosome abnormalities, male phenotype, NECcategory
- Q99Other chromosome abnormalities, not elsewhere classifiedcategory
QA0 — Genetic disorders, not elsewhere classified
Source
ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.