All ICD10 Codes
Chapter 17

Q00–Q99: Congenital Malformations, Deformations and Chromosomal Abnormalities

Congenital Malformations, Deformations and Chromosomal Abnormalities diagnostic classification updated for 2026.

Chapter Instructions

Excludes2(Not included here. Code separately if applicable.)
  • inborn errors of metabolism (E70-E88)
All CodesBillable Only
Internal Codes
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  • Q77.7—

    Spondyloepiphyseal dysplasia

  • Q77.8—

    Other osteochondrodysplasia with defects of growth of tubular bones and spine

  • Q77.9—

    Osteochondrodysplasia with defects of growth of tubular bones and spine, unspecified

  • Q78.0—

    Osteogenesis imperfecta

  • Q78.1—

    Polyostotic fibrous dysplasia

  • Q78.2—

    Osteopetrosis

  • Q78.3—

    Progressive diaphyseal dysplasia

  • Q78.4—

    Enchondromatosis

  • Q78.5—

    Metaphyseal dysplasia

  • Q78.6—

    Multiple congenital exostoses

  • Q78.8—

    Other specified osteochondrodysplasias

  • Q78.9—

    Osteochondrodysplasia, unspecified

  • Q79.0—

    Congenital diaphragmatic hernia

  • Q79.1—

    Other congenital malformations of diaphragm

  • Q79.2—

    Exomphalos

  • Q79.3—

    Gastroschisis

  • Q79.4—

    Prune belly syndrome

  • Q79.51—

    Congenital hernia of bladder

  • Q79.59—

    Other congenital malformations of abdominal wall

  • Q79.60—

    Ehlers-Danlos syndrome, unspecified

  • Q79.61—

    Classical Ehlers-Danlos syndrome

  • Q79.62—

    Hypermobile Ehlers-Danlos syndrome

  • Q79.63—

    Vascular Ehlers-Danlos syndrome

  • Q79.69—

    Other Ehlers-Danlos syndromes

  • Q79.8—

    Other congenital malformations of musculoskeletal system

  • Q79.9—

    Congenital malformation of musculoskeletal system, unspecified

  • Q80.0—

    Ichthyosis vulgaris

  • Q80.1—

    X-linked ichthyosis

  • Q80.2—

    Lamellar ichthyosis

  • Q80.3—

    Congenital bullous ichthyosiform erythroderma

  • Q80.4—

    Harlequin fetus

  • Q80.8—

    Other congenital ichthyosis

  • Q80.9—

    Congenital ichthyosis, unspecified

  • Q81.0—

    Epidermolysis bullosa simplex

  • Q81.1—

    Epidermolysis bullosa letalis

  • Q81.2—

    Epidermolysis bullosa dystrophica

  • Q81.8—

    Other epidermolysis bullosa

  • Q81.9—

    Epidermolysis bullosa, unspecified

  • Q82.0—

    Hereditary lymphedema

  • Q82.1—

    Xeroderma pigmentosum

  • Q82.2—

    Congenital cutaneous mastocytosis

  • Q82.3—

    Incontinentia pigmenti

  • Q82.4—

    Ectodermal dysplasia (anhidrotic)

  • Q82.5—

    Congenital non-neoplastic nevus

  • Q82.6—

    Congenital sacral dimple

  • Q82.8—

    Other specified congenital malformations of skin

  • Q82.9—

    Congenital malformation of skin, unspecified

  • Q83.0—

    Congenital absence of breast with absent nipple

  • Q83.1—

    Accessory breast

  • Q83.2—

    Absent nipple

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