ICD-10-CM Alphabetic Index · FY 2027 258 Entries

Malformation in the ICD-10-CM Index ICD-10-CM

The main term Malformation (congenital) carries 258 index entries pointing to 185 ICD-10-CM codes. Every indented line below refines the term by site, cause, or type. Verify any candidate code in the Tabular List before using it.

✓ Built from the official CMS FY 2027 index fileEffective Oct 1, 2026 – Sep 30, 2027

258

Index Entries

185

Codes Referenced

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258 of 258 shown

ICD-10-CM

Index Entries Under Malformation 258 entries · 185 codes

Malformation (congenital)

adrenal gland Q89.1

affecting multiple systems with skeletal changes NEC Q87.5

alimentary tract Q45.9

specified type NEC Q45.8

upper Q40.9

specified type NEC Q40.8

aorta Q25.40

absence Q25.41

aneurysm, congenital Q25.43

aplasia Q25.41

atresia Q25.29

aortic arch Q25.21

coarctation (preductal) (postductal) Q25.1

dilatation, congenital Q25.44

hypoplasia Q25.42

patent ductus arteriosus Q25.0

specified type NEC Q25.49

stenosis Q25.1

supravalvular Q25.3

aortic valve Q23.9

specified NEC Q23.88

arteriovenous, aneurysmatic (congenital) Q27.30

brain Q28.2

ruptured I60.8

intracerebral I61.8

intraparenchymal I61.8

intraventricular I61.5

subarachnoid I60.8

cerebral Q28.2 see also Malformation, arteriovenous, brain

peripheral Q27.30

digestive system see Angiodysplasia

congenital Q27.33

lower limb Q27.32

other specified site Q27.39

renal vessel Q27.34

upper limb Q27.31

precerebral vessels (nonruptured) Q28.0

auricle

ear (congenital) Q17.3

acquired H61.119

left H61.112

with right H61.113

right H61.111

with left H61.113

bile duct Q44.5

bladder Q64.79

aplasia Q64.5

diverticulum Q64.6

exstrophy see Exstrophy, bladder

neck obstruction Q64.31

bone Q79.9

face Q75.9

specified type NEC Q75.8

skull Q75.9

specified type NEC Q75.8

brain (multiple) Q04.9

arteriovenous Q28.2

specified type NEC Q04.8

branchial cleft Q18.2

breast Q83.9

specified type NEC Q83.8

broad ligament Q50.6

bronchus Q32.4

bursa Q79.9

cardiac

chambers Q20.9

specified type NEC Q20.8

septum Q21.9

specified type NEC Q21.8

cerebral Q04.9

vessels Q28.3

cervix uteri Q51.9

specified type NEC Q51.828

Chiari

Type I G93.5

Type II Q07.01

choroid (congenital) Q14.3

plexus Q07.8

circulatory system Q28.9

cochlea Q16.5

cornea Q13.4

coronary vessels Q24.5

corpus callosum (congenital) Q04.0

diaphragm Q79.1

digestive system NEC, specified type NEC Q45.8

dura Q07.9

brain Q04.9

spinal Q06.9

ear Q17.9

causing impairment of hearing Q16.9

external Q17.9

accessory auricle Q17.0

causing impairment of hearing Q16.9

absence of

auditory canal Q16.1

auricle Q16.0

macrotia Q17.1

microtia Q17.2

misplacement Q17.4

misshapen NEC Q17.3

prominence Q17.5

specified type NEC Q17.8

inner Q16.5

middle Q16.4

absence of eustachian tube Q16.2

ossicles (fusion) Q16.3

ossicles Q16.3

specified type NEC Q17.8

epididymis Q55.4

esophagus Q39.9

specified type NEC Q39.8

eye Q15.9

lid Q10.3

specified NEC Q15.8

fallopian tube Q50.6

genital organ see Anomaly, genitalia

great

artery Q25.9

aorta see Malformation, aorta

pulmonary artery see Malformation, pulmonary, artery

specified type NEC Q25.8

vein Q26.9

anomalous

portal venous connection Q26.5

pulmonary venous connection Q26.4

partial Q26.3

total Q26.2

persistent left superior vena cava Q26.1

portal vein-hepatic artery fistula Q26.6

specified type NEC Q26.8

vena cava stenosis, congenital Q26.0

gum Q38.6

hair Q84.2

heart Q24.9

specified type NEC Q24.8

integument Q84.9

specified type NEC Q84.8

internal ear Q16.5

intestine Q43.9

specified type NEC Q43.8

iris Q13.2

joint Q74.9

ankle Q74.2

lumbosacral Q76.49

sacroiliac Q74.2

specified type NEC Q74.8

kidney Q63.9

accessory Q63.0

giant Q63.3

horseshoe Q63.1

hydronephrosis Q62.0

malposition Q63.2

specified type NEC Q63.8

lacrimal apparatus Q10.6

lip Q38.0

lingual Q38.3

liver Q44.70

lung Q33.9

meninges or membrane (congenital) Q07.9

cerebral Q04.8

spinal (cord) Q06.9

middle ear Q16.4

ossicles Q16.3

mitral valve Q23.9

specified NEC Q23.88

Mondini's (congenital) (malformation, cochlea) Q16.5

mouth (congenital) Q38.6

multiple types NEC Q89.7

musculoskeletal system Q79.9

myocardium Q24.8

nail Q84.6

nervous system (central) Q07.9

nose Q30.9

specified type NEC Q30.8

optic disc Q14.2

orbit Q10.7

ovary Q50.39

palate Q38.5

parathyroid gland Q89.2

pelvic organs or tissues NEC

in pregnancy or childbirth O34.8 Non-billable

causing obstructed labor O65.5

penis Q55.69

aplasia Q55.5

curvature (lateral) Q55.61

hypoplasia Q55.62

pericardium Q24.8

peripheral vascular system Q27.9

specified type NEC Q27.8

pharynx Q38.8

precerebral vessels Q28.1

prostate Q55.4

pulmonary

arteriovenous Q25.72

artery Q25.9

atresia Q25.5

specified type NEC Q25.79

stenosis Q25.6

valve Q22.3

renal artery Q27.2

respiratory system Q34.9

retina Q14.1

scrotum see Malformation, testis and scrotum

seminal vesicles Q55.4

sense organs NEC Q07.9

skin Q82.9

specified NEC Q89.89

spinal

cord Q06.9

nerve root Q07.8

spine Q76.49

kyphosis see Kyphosis, congenital

lordosis see Lordosis, congenital

spleen Q89.09

stomach Q40.3

specified type NEC Q40.2

teeth, tooth K00.9

tendon Q79.9

testis and scrotum Q55.20

aplasia Q55.0

hypoplasia Q55.1

polyorchism Q55.21

retractile testis Q55.22

scrotal transposition Q55.23

specified NEC Q55.29

throat Q38.8

thorax, bony Q76.9

thyroid gland Q89.2

tongue (congenital) Q38.3

hypertrophy Q38.2

tie Q38.1

trachea Q32.1

tricuspid valve Q22.9

specified type NEC Q22.8

umbilical cord NEC (complicating delivery) O69.89 Non-billable

umbilicus Q89.9

ureter Q62.8

agenesis Q62.4

duplication Q62.5

malposition see Malposition, congenital, ureter

obstructive defect see Defect, obstructive, ureter

vesico-uretero-renal reflux Q62.7

urethra Q64.79

aplasia Q64.5

duplication Q64.74

posterior valves Q64.2

prolapse Q64.71

stricture Q64.32

urinary system Q64.9

uterus Q51.9

specified type NEC Q51.818

vagina Q52.4

vascular system, peripheral Q27.9

vas deferens Q55.4

atresia Q55.3

venous see Anomaly, vein(s)

vulva Q52.70

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Related Index Terms

Exstrophy Lordosis Malposition All index terms starting with M Index to Diseases and Injuries ICD-10-CM Code Lookup

Source: Centers for Medicare & Medicaid Services, FY 2027 ICD-10-CM Index to Diseases and Injuries release files, effective October 1, 2026 through September 30, 2027.