ICD-10-CM 2027
ICD-10 code for accessory
Choose a code from the options below based on the documentation.
From the official ICD-10-CM alphabetic index entry “Accessory (congenital)”. Page updated September 29, 2026.
About coding accessory
The official ICD-10-CM index doesn't give a single default code for accessory; the code depends on the details below.
More specific accessory codes (official index)
- adrenal gland Q89.1 — Congenital malformations of adrenal gland
- anus Q43.4 — Duplication of intestine
- appendix Q43.4 — Duplication of intestine
- atrioventricular conduction I45.6 — Pre-excitation syndrome
- auditory ossicles Q16.3 — Congenital malformation of ear ossicles
- auricle (ear) Q17.0 — Accessory auricle
- biliary duct or passage Q44.5 — Other congenital malformations of bile ducts
- bladder Q64.79 — Other congenital malformations of bladder and urethra
- blood vessels NEC Q27.9 — Congenital malformation of peripheral vascular system, unspecified
- coronary Q24.5 — Malformation of coronary vessels
- bone NEC Q79.8 — Other congenital malformations of musculoskeletal system
- breast tissue, axilla Q83.1 — Accessory breast
- carpal bones Q74.0 — Other congenital malformations of upper limb(s), including shoulder girdle
- cecum Q43.4 — Duplication of intestine
- chromosome (s) NEC (nonsex) Q92.9 — Trisomy and partial trisomy of autosomes, unspecified
- with complex rearrangements NEC Q92.5 — Duplications with other complex rearrangements
- seen only at prometaphase Q92.8 — Other specified trisomies and partial trisomies of autosomes
- partial Q92.9 — Trisomy and partial trisomy of autosomes, unspecified
- sex
- female phenotype Q97.8 — Other specified sex chromosome abnormalities, female phenotype
- 13
- 18
- 21
- coronary artery Q24.5 — Malformation of coronary vessels
- cusp (s), heart valve NEC Q24.8 — Other specified congenital malformations of heart
- pulmonary Q22.3 — Other congenital malformations of pulmonary valve
- cystic duct Q44.5 — Other congenital malformations of bile ducts
- digit (s) Q69.9 — Polydactyly, unspecified
- ear (auricle) (lobe) Q17.0 — Accessory auricle
- endocrine gland NEC Q89.2 — Congenital malformations of other endocrine glands
- eye muscle Q10.3 — Other congenital malformations of eyelid
- eyelid Q10.3 — Other congenital malformations of eyelid
- face bone (s) Q75.8 — Other specified congenital malformations of skull and face bones
- fallopian tube (fimbria) (ostium) Q50.6 — Other congenital malformations of fallopian tube and broad ligament
- finger (s) Q69.0 — Accessory finger(s)
- foreskin N47.8 — Other disorders of prepuce
- frontonasal process Q75.8 — Other specified congenital malformations of skull and face bones
- gallbladder Q44.1 — Other congenital malformations of gallbladder
- genital organ (s)
- female Q52.8 — Other specified congenital malformations of female genitalia
- external Q52.79 — Other congenital malformations of vulva
- internal NEC Q52.8 — Other specified congenital malformations of female genitalia
- male Q55.8 — Other specified congenital malformations of male genital organs
- genitourinary organs NEC Q89.89 — Other specified congenital malformations
- female Q52.8 — Other specified congenital malformations of female genitalia
- male Q55.8 — Other specified congenital malformations of male genital organs
- hallux Q69.2 — Accessory toe(s)
- heart Q24.8 — Other specified congenital malformations of heart
- valve NEC Q24.8 — Other specified congenital malformations of heart
- pulmonary Q22.3 — Other congenital malformations of pulmonary valve
- hepatic ducts Q44.5 — Other congenital malformations of bile ducts
- hymen Q52.4 — Other congenital malformations of vagina
- intestine (large) (small) Q43.4 — Duplication of intestine
- kidney Q63.0 — Accessory kidney
- lacrimal canal Q10.6 — Other congenital malformations of lacrimal apparatus
- leaflet, heart valve NEC Q24.8 — Other specified congenital malformations of heart
- ligament, broad Q50.6 — Other congenital malformations of fallopian tube and broad ligament
- liver Q44.79 — Other congenital malformations of liver
- duct Q44.5 — Other congenital malformations of bile ducts
- lobule (ear) Q17.0 — Accessory auricle
- lung (lobe) Q33.1 — Accessory lobe of lung
- muscle Q79.8 — Other congenital malformations of musculoskeletal system
- navicular of carpus Q74.0 — Other congenital malformations of upper limb(s), including shoulder girdle
- nervous system, part NEC Q07.8 — Other specified congenital malformations of nervous system
- nipple Q83.3 — Accessory nipple
- nose Q30.8 — Other congenital malformations of nose
- organ or site not listed
- ovary Q50.31 — Accessory ovary
- oviduct Q50.6 — Other congenital malformations of fallopian tube and broad ligament
- pancreas Q45.3 — Other congenital malformations of pancreas and pancreatic duct
- parathyroid gland Q89.2 — Congenital malformations of other endocrine glands
- parotid gland (and duct) Q38.4 — Congenital malformations of salivary glands and ducts
- pituitary gland Q89.2 — Congenital malformations of other endocrine glands
- preauricular appendage Q17.0 — Accessory auricle
- prepuce N47.8 — Other disorders of prepuce
- renal arteries (multiple) Q27.2 — Other congenital malformations of renal artery
- rib Q76.6 — Other congenital malformations of ribs
- cervical Q76.5 — Cervical rib
- roots (teeth) K00.2 — Abnormalities of size and form of teeth
- salivary gland Q38.4 — Congenital malformations of salivary glands and ducts
- sesamoid bones Q74.8 — Other specified congenital malformations of limb(s)
- foot Q74.2 — Other congenital malformations of lower limb(s), including pelvic girdle
- hand Q74.0 — Other congenital malformations of upper limb(s), including shoulder girdle
- skin tags Q82.8 — Other specified congenital malformations of skin
- spleen Q89.09 — Congenital malformations of spleen
- sternum Q76.7 — Congenital malformation of sternum
- submaxillary gland Q38.4 — Congenital malformations of salivary glands and ducts
- tarsal bones Q74.2 — Other congenital malformations of lower limb(s), including pelvic girdle
- teeth, tooth K00.1 — Supernumerary teeth
- tendon Q79.8 — Other congenital malformations of musculoskeletal system
- thumb Q69.1 — Accessory thumb(s)
- thymus gland Q89.2 — Congenital malformations of other endocrine glands
- thyroid gland Q89.2 — Congenital malformations of other endocrine glands
- toes Q69.2 — Accessory toe(s)
- tongue Q38.3 — Other congenital malformations of tongue
- tooth, teeth K00.1 — Supernumerary teeth
- tragus Q17.0 — Accessory auricle
- ureter Q62.5 — Duplication of ureter
- urethra Q64.79 — Other congenital malformations of bladder and urethra
- urinary organ or tract NEC Q64.8 — Other specified congenital malformations of urinary system
- uterus Q51.28 — Other and unspecified doubling of uterus
- vagina Q52.10 — Doubling of vagina, unspecified
- valve, heart NEC Q24.8 — Other specified congenital malformations of heart
- pulmonary Q22.3 — Other congenital malformations of pulmonary valve
- vertebra Q76.49 — Other congenital malformations of spine, not associated with scoliosis
- vocal cords Q31.8 — Other congenital malformations of larynx
- vulva Q52.79 — Other congenital malformations of vulva
Common questions about accessory ICD-10 codes
What is the ICD-10 code for adrenal gland accessory?
- Q89.1 — Congenital malformations of adrenal gland.
What is the ICD-10 code for anus accessory?
- Q43.4 — Duplication of intestine.
What is the ICD-10 code for appendix accessory?
- Q43.4 — Duplication of intestine.
What is the ICD-10 code for atrioventricular conduction accessory?
- I45.6 — Pre-excitation syndrome.
What is the ICD-10 code for auditory ossicles accessory?
- Q16.3 — Congenital malformation of ear ossicles.
What is the ICD-10 code for auricle accessory?
- Q17.0 — Accessory auricle.
What is the ICD-10 code for biliary duct or passage accessory?
- Q44.5 — Other congenital malformations of bile ducts.