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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  • Q72.03—

    Congenital complete absence of lower limb, bilateral

  • Q72.10—

    Congenital absence of unspecified thigh and lower leg with foot present

  • Q72.11—

    Congenital absence of right thigh and lower leg with foot present

  • Q72.12—

    Congenital absence of left thigh and lower leg with foot present

  • Q72.13—

    Congenital absence of thigh and lower leg with foot present, bilateral

  • Q72.20—

    Congenital absence of both lower leg and foot, unspecified lower limb

  • Q72.21—

    Congenital absence of both lower leg and foot, right lower limb

  • Q72.22—

    Congenital absence of both lower leg and foot, left lower limb

  • Q72.23—

    Congenital absence of both lower leg and foot, bilateral

  • Q72.30—

    Congenital absence of unspecified foot and toe(s)

  • Q72.31—

    Congenital absence of right foot and toe(s)

  • Q72.32—

    Congenital absence of left foot and toe(s)

  • Q72.33—

    Congenital absence of foot and toe(s), bilateral

  • Q72.40—

    Longitudinal reduction defect of unspecified femur

  • Q72.41—

    Longitudinal reduction defect of right femur

  • Q72.42—

    Longitudinal reduction defect of left femur

  • Q72.43—

    Longitudinal reduction defect of femur, bilateral

  • Q72.50—

    Longitudinal reduction defect of unspecified tibia

  • Q72.51—

    Longitudinal reduction defect of right tibia

  • Q72.52—

    Longitudinal reduction defect of left tibia

  • Q72.53—

    Longitudinal reduction defect of tibia, bilateral

  • Q72.60—

    Longitudinal reduction defect of unspecified fibula

  • Q72.61—

    Longitudinal reduction defect of right fibula

  • Q72.62—

    Longitudinal reduction defect of left fibula

  • Q72.63—

    Longitudinal reduction defect of fibula, bilateral

  • Q72.70—

    Split foot, unspecified lower limb

  • Q72.71—

    Split foot, right lower limb

  • Q72.72—

    Split foot, left lower limb

  • Q72.73—

    Split foot, bilateral

  • Q72.811—

    Congenital shortening of right lower limb

  • Q72.812—

    Congenital shortening of left lower limb

  • Q72.813—

    Congenital shortening of lower limb, bilateral

  • Q72.819—

    Congenital shortening of unspecified lower limb

  • Q72.891—

    Other reduction defects of right lower limb

  • Q72.892—

    Other reduction defects of left lower limb

  • Q72.893—

    Other reduction defects of lower limb, bilateral

  • Q72.899—

    Other reduction defects of unspecified lower limb

  • Q72.90—

    Unspecified reduction defect of unspecified lower limb

  • Q72.91—

    Unspecified reduction defect of right lower limb

  • Q72.92—

    Unspecified reduction defect of left lower limb

  • Q72.93—

    Unspecified reduction defect of lower limb, bilateral

  • Q73.0—

    Congenital absence of unspecified limb(s)

  • Q73.1—

    Phocomelia, unspecified limb(s)

  • Q73.8—

    Other reduction defects of unspecified limb(s)

  • Q74.0—

    Other congenital malformations of upper limb(s), including shoulder girdle

  • Q74.1—

    Congenital malformation of knee

  • Q74.2—

    Other congenital malformations of lower limb(s), including pelvic girdle

  • Q74.3—

    Arthrogryposis multiplex congenita

  • Q74.8—

    Other specified congenital malformations of limb(s)

  • Q74.9—

    Unspecified congenital malformation of limb(s)

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