U.S. category index · FY 2027

Q ICD-10-CM Categories: Category Index

Browse 89 top-level ICD-10-CM categories beginning with Q, then follow their complete FY 2027 child-code hierarchies.

Complete category list

Categories beginning with Q

Open a category to continue through its complete hierarchy of more specific codes.

Q00

Anencephaly and similar malformations

Q01

Encephalocele

Q02

Microcephaly

Q03

Congenital hydrocephalus

Q04

Other congenital malformations of brain

Q05

Spina bifida

Q06

Other congenital malformations of spinal cord

Q07

Other congenital malformations of nervous system

Q10

Congenital malformations of eyelid, lacrimal apparatus and orbit

Q11

Anophthalmos, microphthalmos and macrophthalmos

Q12

Congenital lens malformations

Q13

Congenital malformations of anterior segment of eye

Q14

Congenital malformations of posterior segment of eye

Q15

Other congenital malformations of eye

Q16

Congenital malformations of ear causing impairment of hearing

Q17

Other congenital malformations of ear

Q18

Other congenital malformations of face and neck

Q20

Congenital malformations of cardiac chambers and connections

Q21

Congenital malformations of cardiac septa

Q22

Congenital malformations of pulmonary and tricuspid valves

Q23

Congenital malformations of aortic and mitral valves

Q24

Other congenital malformations of heart

Q25

Congenital malformations of great arteries

Q26

Congenital malformations of great veins

Q27

Other congenital malformations of peripheral vascular system

Q28

Other congenital malformations of circulatory system

Q30

Congenital malformations of nose

Q31

Congenital malformations of larynx

Q32

Congenital malformations of trachea and bronchus

Q33

Congenital malformations of lung

Q34

Other congenital malformations of respiratory system

Q35

Cleft palate

Q36

Cleft lip

Q37

Cleft palate with cleft lip

Q38

Other congenital malformations of tongue, mouth and pharynx

Q39

Congenital malformations of esophagus

Q40

Other congenital malformations of upper alimentary tract

Q41

Congenital absence, atresia and stenosis of small intestine

Q42

Congenital absence, atresia and stenosis of large intestine

Q43

Other congenital malformations of intestine

Q44

Congenital malformations of gallbladder, bile ducts and liver

Q45

Other congenital malformations of digestive system

Q50

Congenital malformations of ovaries, fallopian tubes and broad ligaments

Q51

Congenital malformations of uterus and cervix

Q52

Other congenital malformations of female genitalia

Q53

Undescended and ectopic testicle

Q54

Hypospadias

Q55

Other congenital malformations of male genital organs

Q56

Indeterminate sex and pseudohermaphroditism

Q60

Renal agenesis and other reduction defects of kidney

Q61

Cystic kidney disease

Q62

Congenital obstructive defects of renal pelvis and congenital malformations of ureter

Q63

Other congenital malformations of kidney

Q64

Other congenital malformations of urinary system

Q65

Congenital deformities of hip

Q66

Congenital deformities of feet

Q67

Congenital musculoskeletal deformities of head, face, spine and chest

Q68

Other congenital musculoskeletal deformities

Q69

Polydactyly

Q70

Syndactyly

Q71

Reduction defects of upper limb

Q72

Reduction defects of lower limb

Q73

Reduction defects of unspecified limb

Q74

Other congenital malformations of limb(s)

Q75

Other congenital malformations of skull and face bones

Q76

Congenital malformations of spine and bony thorax

Q77

Osteochondrodysplasia with defects of growth of tubular bones and spine

Q78

Other osteochondrodysplasias

Q79

Congenital malformations of musculoskeletal system, not elsewhere classified

Q80

Congenital ichthyosis

Q81

Epidermolysis bullosa

Q82

Other congenital malformations of skin

Q83

Congenital malformations of breast

Q84

Other congenital malformations of integument

Q85

Phakomatoses, not elsewhere classified

Q86

Congenital malformation syndromes due to known exogenous causes, not elsewhere classified

Q87

Other specified congenital malformation syndromes affecting multiple systems

Q89

Other congenital malformations, not elsewhere classified

Q90

Down syndrome

Q91

Trisomy 18 and Trisomy 13

Q92

Other trisomies and partial trisomies of the autosomes, not elsewhere classified

Q93

Monosomies and deletions from the autosomes, not elsewhere classified

Q95

Balanced rearrangements and structural markers, not elsewhere classified

Q96

Turner's syndrome

Q97

Other sex chromosome abnormalities, female phenotype, not elsewhere classified

Q98

Other sex chromosome abnormalities, male phenotype, not elsewhere classified

Q99

Other chromosome abnormalities, not elsewhere classified

QA0

Neurodevelopmental disorders related to specific genetic pathogenic variants

QA1

Genetic disorders associated with neoplasms, not elsewhere classified

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

This category index is generated from Vero’s repository-backed ICD-10-CM hierarchy. Every listed category is a top-level record, and each linked category page exposes its direct child codes.

Review the CDC/NCHS ICD-10-CM source

Category navigation

Frequently asked questions

Which ICD-10-CM categories begin with Q?

This index lists 89 top-level categories beginning with Q from Vero’s FY 2027 U.S. ICD-10-CM reference dataset.

How do I find a more specific Q code?

Open a category below, then follow its linked child-code hierarchy until you reach the code supported by the documentation.

Which ICD-10-CM release does this Q index use?

The index uses the FY 2027 U.S. ICD-10-CM release and the repository-backed hierarchy displayed on each linked code page.

Is every Q category billable?

No. These are top-level categories used for navigation. Follow the hierarchy to a sufficiently specific code and confirm the active code set, official guidance, and payer requirements.

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