1. 2023 ICD-10-CM Index
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2. 'I' Terms
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3. Index Terms Starting With 'I' (Imperfect)

Index Terms Starting With 'I' (Imperfect)

• Imperfect

  • aeration, lung (newborn) - see Atelectasis
  • closure (congenital)
    • alimentary tract NEC Q45.8
      ICD-10-CM Diagnosis Code Q45.8

      Other specified congenital malformations of digestive system

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

      Applicable To

      • Absence (complete) (partial) of alimentary tract NOS
      • Duplication of digestive system
      • Malposition, congenital of digestive system
      • lower Q43.8
        ICD-10-CM Diagnosis Code Q43.8

        Other specified congenital malformations of intestine

        2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

        Applicable To

        • Congenital blind loop syndrome
        • Congenital diverticulitis, colon
        • Congenital diverticulum, intestine
        • Dolichocolon
        • Megaloappendix
        • Megaloduodenum
        • Microcolon
        • Transposition of appendix
        • Transposition of colon
        • Transposition of intestine
      • upper Q40.8
        ICD-10-CM Diagnosis Code Q40.8

        Other specified congenital malformations of upper alimentary tract

        2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt
    • atrioventricular ostium Q21.20
      ICD-10-CM Diagnosis Code Q21.20

      Atrioventricular septal defect, unspecified as to partial or complete

      2023 - New Code Billable/Specific Code POA Exempt

      Applicable To

      • Atrioventricular canal, NOS
      • Endocardial cushion defect NOS
      • Ostium primum atrial septal defect (type I) NOS
    • atrium Q21.11
      (secundum)
      ICD-10-CM Diagnosis Code Q21.11

      Secundum atrial septal defect

      2023 - New Code Billable/Specific Code POA Exempt

      Applicable To

      • Fenestrated atrial septum
      • Patent or persistent ostium secundum defect (type II)
    • branchial cleft NOS Q18.2
      ICD-10-CM Diagnosis Code Q18.2

      Other branchial cleft malformations

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

      Applicable To

      • Branchial cleft malformation NOS
      • Cervical auricle
      • Otocephaly
      • cyst Q18.0
        ICD-10-CM Diagnosis Code Q18.0

        Sinus, fistula and cyst of branchial cleft

        2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

        Applicable To

        • Branchial vestige
      • fistula Q18.0
        ICD-10-CM Diagnosis Code Q18.0

        Sinus, fistula and cyst of branchial cleft

        2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

        Applicable To

        • Branchial vestige
      • sinus Q18.0
        ICD-10-CM Diagnosis Code Q18.0

        Sinus, fistula and cyst of branchial cleft

        2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

        Applicable To

        • Branchial vestige
    • choroid Q14.3
      ICD-10-CM Diagnosis Code Q14.3

      Congenital malformation of choroid

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt
    • cricoid cartilage Q31.8
      ICD-10-CM Diagnosis Code Q31.8

      Other congenital malformations of larynx

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

      Applicable To

      • Absence of larynx
      • Agenesis of larynx
      • Atresia of larynx
      • Congenital cleft thyroid cartilage
      • Congenital fissure of epiglottis
      • Congenital stenosis of larynx NEC
      • Posterior cleft of cricoid cartilage
    • cusps, heart valve NEC Q24.8
      ICD-10-CM Diagnosis Code Q24.8

      Other specified congenital malformations of heart

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

      Applicable To

      • Congenital diverticulum of left ventricle
      • Congenital malformation of myocardium
      • Congenital malformation of pericardium
      • Malposition of heart
      • Uhl's disease
      • pulmonary Q22.3
        ICD-10-CM Diagnosis Code Q22.3

        Other congenital malformations of pulmonary valve

        2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

        Applicable To

        • Congenital malformation of pulmonary valve NOS
        • Supernumerary cusps of pulmonary valve
    • ductus
      • arteriosus Q25.0
        ICD-10-CM Diagnosis Code Q25.0

        Patent ductus arteriosus

        2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

        Applicable To

        • Patent ductus Botallo
        • Persistent ductus arteriosus
      • Botalli Q25.0
        ICD-10-CM Diagnosis Code Q25.0

        Patent ductus arteriosus

        2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

        Applicable To

        • Patent ductus Botallo
        • Persistent ductus arteriosus
    • ear drum Q16.4
      (causing impairment of hearing)
      ICD-10-CM Diagnosis Code Q16.4

      Other congenital malformations of middle ear

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

      Applicable To

      • Congenital malformation of middle ear NOS
    • esophagus with communication to bronchus or trachea Q39.1
      ICD-10-CM Diagnosis Code Q39.1

      Atresia of esophagus with tracheo-esophageal fistula

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

      Applicable To

      • Atresia of esophagus with broncho-esophageal fistula
    • eyelid Q10.3
      ICD-10-CM Diagnosis Code Q10.3

      Other congenital malformations of eyelid

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

      Applicable To

      • Ablepharon
      • Blepharophimosis, congenital
      • Coloboma of eyelid
      • Congenital absence or agenesis of cilia
      • Congenital absence or agenesis of eyelid
      • Congenital accessory eyelid
      • Congenital accessory eye muscle
      • Congenital malformation of eyelid NOS
    • foramen
      • botalli Q21.12
        ICD-10-CM Diagnosis Code Q21.12

        Patent foramen ovale

        2023 - New Code Billable/Specific Code POA Exempt

        Applicable To

        • Persistent foramen ovale
      • ovale Q21.12
        ICD-10-CM Diagnosis Code Q21.12

        Patent foramen ovale

        2023 - New Code Billable/Specific Code POA Exempt

        Applicable To

        • Persistent foramen ovale
    • genitalia, genital organ(s)
      • female Q52.8
        ICD-10-CM Diagnosis Code Q52.8

        Other specified congenital malformations of female genitalia

        2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Female Dx POA Exempt
        • external Q52.79
          ICD-10-CM Diagnosis Code Q52.79

          Other congenital malformations of vulva

          2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Female Dx POA Exempt

          Applicable To

          • Congenital cyst of vulva
        • internal NEC Q52.8
          ICD-10-CM Diagnosis Code Q52.8

          Other specified congenital malformations of female genitalia

          2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Female Dx POA Exempt
      • male Q55.8
        ICD-10-CM Diagnosis Code Q55.8

        Other specified congenital malformations of male genital organs

        2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Male Dx POA Exempt
    • glottis Q31.8
      ICD-10-CM Diagnosis Code Q31.8

      Other congenital malformations of larynx

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

      Applicable To

      • Absence of larynx
      • Agenesis of larynx
      • Atresia of larynx
      • Congenital cleft thyroid cartilage
      • Congenital fissure of epiglottis
      • Congenital stenosis of larynx NEC
      • Posterior cleft of cricoid cartilage
    • interatrial ostium or septum Q21.19
      ICD-10-CM Diagnosis Code Q21.19

      Other specified atrial septal defect

      2023 - New Code Billable/Specific Code POA Exempt

      Applicable To

      • Common atrium
      • Other specified atrial septal abnormality
    • interauricular ostium or septum Q21.19
      ICD-10-CM Diagnosis Code Q21.19

      Other specified atrial septal defect

      2023 - New Code Billable/Specific Code POA Exempt

      Applicable To

      • Common atrium
      • Other specified atrial septal abnormality
    • interventricular ostium or septum Q21.0
      ICD-10-CM Diagnosis Code Q21.0

      Ventricular septal defect

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

      Applicable To

      • Roger's disease
    • larynx Q31.8
      ICD-10-CM Diagnosis Code Q31.8

      Other congenital malformations of larynx

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

      Applicable To

      • Absence of larynx
      • Agenesis of larynx
      • Atresia of larynx
      • Congenital cleft thyroid cartilage
      • Congenital fissure of epiglottis
      • Congenital stenosis of larynx NEC
      • Posterior cleft of cricoid cartilage
    • lip - see Cleft, lip
    • nasal septum Q30.3
      ICD-10-CM Diagnosis Code Q30.3

      Congenital perforated nasal septum

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt
    • nose Q30.2
      ICD-10-CM Diagnosis Code Q30.2

      Fissured, notched and cleft nose

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt
    • omphalomesenteric duct Q43.0
      ICD-10-CM Diagnosis Code Q43.0

      Meckel's diverticulum (displaced) (hypertrophic)

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

      Applicable To

      • Persistent omphalomesenteric duct
      • Persistent vitelline duct
    • optic nerve entry Q14.2
      ICD-10-CM Diagnosis Code Q14.2

      Congenital malformation of optic disc

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

      Applicable To

      • Coloboma of optic disc
    • organ or site not listed - see Anomaly, by site
    • ostium
      • interatrial Q21.19
        ICD-10-CM Diagnosis Code Q21.19

        Other specified atrial septal defect

        2023 - New Code Billable/Specific Code POA Exempt

        Applicable To

        • Common atrium
        • Other specified atrial septal abnormality
      • interauricular Q21.19
        ICD-10-CM Diagnosis Code Q21.19

        Other specified atrial septal defect

        2023 - New Code Billable/Specific Code POA Exempt

        Applicable To

        • Common atrium
        • Other specified atrial septal abnormality
      • interventricular Q21.0
        ICD-10-CM Diagnosis Code Q21.0

        Ventricular septal defect

        2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

        Applicable To

        • Roger's disease
    • palate - see Cleft, palate
    • preauricular sinus Q18.1
      ICD-10-CM Diagnosis Code Q18.1

      Preauricular sinus and cyst

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

      Applicable To

      • Fistula of auricle, congenital
      • Cervicoaural fistula
    • retina Q14.1
      ICD-10-CM Diagnosis Code Q14.1

      Congenital malformation of retina

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

      Applicable To

      • Congenital retinal aneurysm
    • roof of orbit Q75.8
      ICD-10-CM Diagnosis Code Q75.8

      Other specified congenital malformations of skull and face bones

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

      Applicable To

      • Absence of skull bone, congenital
      • Congenital deformity of forehead
      • Platybasia
    • sclera Q13.5
      ICD-10-CM Diagnosis Code Q13.5

      Blue sclera

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt
    • septum
      • aorticopulmonary Q21.4
        ICD-10-CM Diagnosis Code Q21.4

        Aortopulmonary septal defect

        2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

        Applicable To

        • Aortic septal defect
        • Aortopulmonary window
      • atrial Q21.19
        (secundum)
        ICD-10-CM Diagnosis Code Q21.19

        Other specified atrial septal defect

        2023 - New Code Billable/Specific Code POA Exempt

        Applicable To

        • Common atrium
        • Other specified atrial septal abnormality
      • between aorta and pulmonary artery Q21.4
        ICD-10-CM Diagnosis Code Q21.4

        Aortopulmonary septal defect

        2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

        Applicable To

        • Aortic septal defect
        • Aortopulmonary window
      • heart Q21.9
        ICD-10-CM Diagnosis Code Q21.9

        Congenital malformation of cardiac septum, unspecified

        2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

        Applicable To

        • Septal (heart) defect NOS
      • interatrial Q21.19
        (secundum)
        ICD-10-CM Diagnosis Code Q21.19

        Other specified atrial septal defect

        2023 - New Code Billable/Specific Code POA Exempt

        Applicable To

        • Common atrium
        • Other specified atrial septal abnormality
      • interauricular Q21.19
        (secundum)
        ICD-10-CM Diagnosis Code Q21.19

        Other specified atrial septal defect

        2023 - New Code Billable/Specific Code POA Exempt

        Applicable To

        • Common atrium
        • Other specified atrial septal abnormality
      • interventricular Q21.0
        ICD-10-CM Diagnosis Code Q21.0

        Ventricular septal defect

        2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

        Applicable To

        • Roger's disease
        • in tetralogy of Fallot Q21.3
          ICD-10-CM Diagnosis Code Q21.3

          Tetralogy of Fallot

          2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

          Applicable To

          • Ventricular septal defect with pulmonary stenosis or atresia, dextroposition of aorta and hypertrophy of right ventricle.
      • nasal Q30.3
        ICD-10-CM Diagnosis Code Q30.3

        Congenital perforated nasal septum

        2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt
      • ventricular Q21.0
        ICD-10-CM Diagnosis Code Q21.0

        Ventricular septal defect

        2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

        Applicable To

        • Roger's disease
        • in tetralogy of Fallot Q21.3
          ICD-10-CM Diagnosis Code Q21.3

          Tetralogy of Fallot

          2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

          Applicable To

          • Ventricular septal defect with pulmonary stenosis or atresia, dextroposition of aorta and hypertrophy of right ventricle.
        • with pulmonary stenosis or atresia, dextraposition of aorta, and hypertrophy of right ventricle Q21.3
          ICD-10-CM Diagnosis Code Q21.3

          Tetralogy of Fallot

          2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

          Applicable To

          • Ventricular septal defect with pulmonary stenosis or atresia, dextroposition of aorta and hypertrophy of right ventricle.
    • skull Q75.0
      ICD-10-CM Diagnosis Code Q75.0

      Craniosynostosis

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

      Applicable To

      • Acrocephaly
      • Imperfect fusion of skull
      • Oxycephaly
      • Trigonocephaly
      • with
        • anencephaly Q00.0
          ICD-10-CM Diagnosis Code Q00.0

          Anencephaly

          2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

          Applicable To

          • Acephaly
          • Acrania
          • Amyelencephaly
          • Hemianencephaly
          • Hemicephaly
        • encephalocele - see Encephalocele
        • hydrocephalus Q03.9
          ICD-10-CM Diagnosis Code Q03.9

          Congenital hydrocephalus, unspecified

          2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt
          • with spina bifida - see Spina bifida, by site, with hydrocephalus
        • microcephaly Q02
          ICD-10-CM Diagnosis Code Q02

          Microcephaly

          2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

          Code First

          • , if applicable, congenital Zika virus disease

          Includes

          • hydromicrocephaly
          • micrencephalon

          Type 1 Excludes

          • Meckel-Gruber syndrome (Q61.9)
    • spine (with meningocele) - see Spina bifida
    • trachea Q32.1
      ICD-10-CM Diagnosis Code Q32.1

      Other congenital malformations of trachea

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

      Applicable To

      • Atresia of trachea
      • Congenital anomaly of tracheal cartilage
      • Congenital dilatation of trachea
      • Congenital malformation of trachea
      • Congenital stenosis of trachea
      • Congenital tracheocele
    • tympanic membrane Q16.4
      (causing impairment of hearing)
      ICD-10-CM Diagnosis Code Q16.4

      Other congenital malformations of middle ear

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

      Applicable To

      • Congenital malformation of middle ear NOS
    • uterus Q51.818
      ICD-10-CM Diagnosis Code Q51.818

      Other congenital malformations of uterus

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Female Dx POA Exempt

      Applicable To

      • Müllerian anomaly of uterus NEC
    • vitelline duct Q43.0
      ICD-10-CM Diagnosis Code Q43.0

      Meckel's diverticulum (displaced) (hypertrophic)

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

      Applicable To

      • Persistent omphalomesenteric duct
      • Persistent vitelline duct
  • erection - see Dysfunction, sexual, male, erectile
  • fusion - see Imperfect, closure
  • inflation, lung (newborn) - see Atelectasis
  • posture R29.3
    ICD-10-CM Diagnosis Code R29.3

    Abnormal posture

    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
  • rotation, intestine Q43.3
    ICD-10-CM Diagnosis Code Q43.3

    Congenital malformations of intestinal fixation

    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

    Applicable To

    • Congenital omental, anomalous adhesions [bands]
    • Congenital peritoneal adhesions [bands]
    • Incomplete rotation of cecum and colon
    • Insufficient rotation of cecum and colon
    • Jackson's membrane
    • Malrotation of colon
    • Rotation failure of cecum and colon
    • Universal mesentery
  • septum, ventricular Q21.0
    ICD-10-CM Diagnosis Code Q21.0

    Ventricular septal defect

    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt

    Applicable To

    • Roger's disease