ICD-10 Code for Anomaly
Also indexed as (congenital) (unspecified type)
The ICD-10-CM code for anomaly is Q89.9 — Congenital malformation, unspecified. This is the code the Alphabetic Index gives for anomaly with no further qualifier, valid for FY2027 (October 1, 2026 – September 30, 2027).
BillableUnspecified
Q89.9 is billable but unspecified. If the documentation names a type, site or cause, one of the more specific codes below is likely expected.
Which anomaly code should you use?
The Alphabetic Index lists 257 codes under Anomaly, anomalous. Which one applies depends on the qualifier documented in the record — the type, site, cause, or associated condition. Find the qualifier below, then verify the code in the Tabular List before using it.
By type
| abdominal wall NEC | Q79.59 | Other congenital malformations of abdominal wall | |
| acoustic nerve | Q07.8 | Other specified congenital malformations of nervous system | |
| adrenal | Q89.1 | Congenital malformations of adrenal gland | |
| Alder | D72.0 | Genetic anomalies of leukocytes | |
| alimentary tract | Q45.9 | Congenital malformation of digestive system, unspecified | |
| alveolar | M26.70 | Unspecified alveolar anomaly | |
| ankle | Q74.2 | Other congenital malformations of lower limb(s), including pelvic girdle | |
| anus | Q43.9 | Congenital malformation of intestine, unspecified | |
| aortaNEC | Q25.40 | Congenital malformation of aorta unspecified | |
| aortic cusp or valve | Q23.9 | Congenital malformation of aortic and mitral valves, unspecified | |
| appendix | Q43.8 | Other specified congenital malformations of intestine | |
| apple peel syndrome | Q41.1 | Congenital absence, atresia and stenosis of jejunum | |
| aqueduct of Sylvius | Q03.0 | Malformations of aqueduct of Sylvius | |
| arm | Q74.0 | Other congenital malformations of upper limb(s), including shoulder girdle | |
| artery | Q27.9 | Congenital malformation of peripheral vascular system, unspecified | |
| aryteno-epiglottic folds | Q31.8 | Other congenital malformations of larynx | |
| auditory canal | Q17.8 | Other specified congenital malformations of ear | |
| Axenfeld's | Q15.0 | Congenital glaucoma | |
| back | Q89.9 | Congenital malformation, unspecified | |
| Bartholin's duct | Q38.4 | Congenital malformations of salivary glands and ducts | |
| biliary duct or passage | Q44.5 | Other congenital malformations of bile ducts | |
| bladder | Q64.70 | Unspecified congenital malformation of bladder and urethra | |
| bone | Q79.9 | Congenital malformation of musculoskeletal system, unspecified | |
| brain | Q04.9 | Congenital malformation of brain, unspecified | |
| breast | Q83.9 | Congenital malformation of breast, unspecified | |
| broad ligament | Q50.6 | Other congenital malformations of fallopian tube and broad ligament | |
| bronchus | Q32.4 | Other congenital malformations of bronchus | |
| bulbus cordis | Q21.9 | Congenital malformation of cardiac septum, unspecified | |
| bursa | Q79.9 | Congenital malformation of musculoskeletal system, unspecified | |
| canal of Nuck | Q52.4 | Other congenital malformations of vagina | |
| canthus | Q10.3 | Other congenital malformations of eyelid | |
| capillary | Q27.9 | Congenital malformation of peripheral vascular system, unspecified | |
| cardiac | Q24.9 | Congenital malformation of heart, unspecified | |
| cardiovascular system | Q28.8 | Other specified congenital malformations of circulatory system | |
| carpus | Q74.0 | Other congenital malformations of upper limb(s), including shoulder girdle | |
| caruncle, lacrimal | Q10.6 | Other congenital malformations of lacrimal apparatus | |
| cascade stomach | Q40.2 | Other specified congenital malformations of stomach | |
| cauda equina | Q06.3 | Other congenital cauda equina malformations | |
| cecum | Q43.9 | Congenital malformation of intestine, unspecified | |
| cerebral | Q04.9 | Congenital malformation of brain, unspecified | |
| cervix | Q51.9 | Congenital malformation of uterus and cervix, unspecified | |
| Chédiak-Higashi | E70.330 | Chediak-Higashi syndrome | |
| cheek | Q18.9 | Congenital malformation of face and neck, unspecified | |
| chest wall | Q67.8 | Other congenital deformities of chest | |
| chin | Q18.9 | Congenital malformation of face and neck, unspecified | |
| chordae tendineae | Q24.8 | Other specified congenital malformations of heart | |
| choroid | Q14.3 | Congenital malformation of choroid | |
| chromosomes, chromosomal | Q99.9 | Chromosomal abnormality, unspecified | |
| cilia | Q10.3 | Other congenital malformations of eyelid | |
| circulatory system | Q28.9 | Congenital malformation of circulatory system, unspecified | |
| clavicle | Q74.0 | Other congenital malformations of upper limb(s), including shoulder girdle | |
| clitoris | Q52.6 | Congenital malformation of clitoris | |
| coccyx | Q76.49 | Other congenital malformations of spine, not associated with scoliosis | |
| colon | Q43.9 | Congenital malformation of intestine, unspecified | |
| common duct | Q44.5 | Other congenital malformations of bile ducts | |
| concha | Q17.3 | Other misshapen ear | |
| cornea | Q13.4 | Other congenital corneal malformations | |
| coronary artery or vein | Q24.5 | Malformation of coronary vessels | |
| cricoid cartilage | Q31.8 | Other congenital malformations of larynx | |
| cystic duct | Q44.5 | Other congenital malformations of bile ducts | |
| dentofacial | M26.9 | Dentofacial anomaly, unspecified | |
| dermatoglyphic | Q82.8 | Other specified congenital malformations of skin | |
| diaphragmNEC | Q79.1 | Other congenital malformations of diaphragm | |
| digestive organor tract | Q45.9 | Congenital malformation of digestive system, unspecified | |
| distance, interarch | M26.25 | Anomalies of interarch distance | |
| distribution, coronary artery | Q24.5 | Malformation of coronary vessels | |
| duodenum | Q43.9 | Congenital malformation of intestine, unspecified | |
| dura | Q04.9 | Congenital malformation of brain, unspecified | |
| ear | Q17.9 | Congenital malformation of ear, unspecified | |
| Ebstein's | Q22.5 | Ebstein's anomaly | |
| ectodermal | Q82.9 | Congenital malformation of skin, unspecified | |
| Eisenmenger's | Q21.8 | Other congenital malformations of cardiac septa | |
| ejaculatory duct | Q55.4 | Other congenital malformations of vas deferens, epididymis, seminal vesicles and prostate | |
| elbow | Q74.0 | Other congenital malformations of upper limb(s), including shoulder girdle | |
| endocrine gland NEC | Q89.2 | Congenital malformations of other endocrine glands | |
| epididymis | Q55.4 | Other congenital malformations of vas deferens, epididymis, seminal vesicles and prostate | |
| epiglottis | Q31.8 | Other congenital malformations of larynx | |
| esophagus | Q39.9 | Congenital malformation of esophagus, unspecified | |
| eustachian tube | Q17.8 | Other specified congenital malformations of ear | |
| eye | Q15.9 | Congenital malformation of eye, unspecified | |
| eyebrow | Q18.8 | Other specified congenital malformations of face and neck | |
| eyelid | Q10.3 | Other congenital malformations of eyelid | |
| face | Q18.9 | Congenital malformation of face and neck, unspecified | |
| fallopian tube | Q50.6 | Other congenital malformations of fallopian tube and broad ligament | |
| fascia | Q79.9 | Congenital malformation of musculoskeletal system, unspecified | |
| femur NEC | Q74.2 | Other congenital malformations of lower limb(s), including pelvic girdle | |
| fibula NEC | Q74.2 | Other congenital malformations of lower limb(s), including pelvic girdle | |
| finger | Q74.0 | Other congenital malformations of upper limb(s), including shoulder girdle | |
| fixation, intestine | Q43.3 | Congenital malformations of intestinal fixation | |
| flexionNOS | Q74.9 | Unspecified congenital malformation of limb(s) | |
| foot NEC | Q74.2 | Other congenital malformations of lower limb(s), including pelvic girdle | |
| forearm | Q74.0 | Other congenital malformations of upper limb(s), including shoulder girdle | |
| forehead | Q75.8 | Other specified congenital malformations of skull and face bones | |
| form, teeth | K00.2 | Abnormalities of size and form of teeth | |
| fovea centralis | Q14.1 | Congenital malformation of retina | |
| gallbladder | Q44.1 | Other congenital malformations of gallbladder | |
| Gartner's duct | Q52.4 | Other congenital malformations of vagina | |
| gastrointestinal tract | Q45.9 | Congenital malformation of digestive system, unspecified | |
| Gerbode | Q21.0 | Ventricular septal defect | |
| glottis | Q31.8 | Other congenital malformations of larynx | |
| granulation or granulocyte, genetic | D72.0 | Genetic anomalies of leukocytes | |
| gum | Q38.6 | Other congenital malformations of mouth | |
| gyri | Q07.9 | Congenital malformation of nervous system, unspecified | |
| hair | Q84.2 | Other congenital malformations of hair | |
| hand | Q74.0 | Other congenital malformations of upper limb(s), including shoulder girdle | |
| hard tissue formation in pulp | K04.3 | Abnormal hard tissue formation in pulp | |
| heart | Q24.9 | Congenital malformation of heart, unspecified | |
| heel NEC | Q74.2 | Other congenital malformations of lower limb(s), including pelvic girdle | |
| Hegglin's | D72.0 | Genetic anomalies of leukocytes | |
| hemianencephaly | Q00.0 | Anencephaly | |
| hemicephaly | Q00.0 | Anencephaly | |
| hemicrania | Q00.0 | Anencephaly | |
| hepatic duct | Q44.5 | Other congenital malformations of bile ducts | |
| hip NEC | Q74.2 | Other congenital malformations of lower limb(s), including pelvic girdle | |
| hourglass stomach | Q40.2 | Other specified congenital malformations of stomach | |
| humerus | Q74.0 | Other congenital malformations of upper limb(s), including shoulder girdle | |
| hymen | Q52.4 | Other congenital malformations of vagina | |
| hypersegmentation of neutrophils, hereditary | D72.0 | Genetic anomalies of leukocytes | |
| hypophyseal | Q89.2 | Congenital malformations of other endocrine glands | |
| ileocecal | Q43.9 | Congenital malformation of intestine, unspecified |
Index terms and codes are reproduced from the official ICD-10-CM FY2027 release. The Alphabetic Index is a finding aid — a code must always be verified in the Tabular List before it is reported. Data sources