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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  • Q71.6—

    Lobster-claw hand

  • Q71.60—

    Lobster-claw hand, unspecified hand

  • Q71.61—

    Lobster-claw right hand

  • Q71.62—

    Lobster-claw left hand

  • Q71.63—

    Lobster-claw hand, bilateral

  • Q71.8—

    Other reduction defects of upper limb

  • Q71.81—

    Congenital shortening of upper limb

  • Q71.811—

    Congenital shortening of right upper limb

  • Q71.812—

    Congenital shortening of left upper limb

  • Q71.813—

    Congenital shortening of upper limb, bilateral

  • Q71.819—

    Congenital shortening of unspecified upper limb

  • Q71.89—

    Other reduction defects of upper limb

  • Q71.891—

    Other reduction defects of right upper limb

  • Q71.892—

    Other reduction defects of left upper limb

  • Q71.893—

    Other reduction defects of upper limb, bilateral

  • Q71.899—

    Other reduction defects of unspecified upper limb

  • Q71.9—

    Unspecified reduction defect of upper limb

  • Q71.90—

    Unspecified reduction defect of unspecified upper limb

  • Q71.91—

    Unspecified reduction defect of right upper limb

  • Q71.92—

    Unspecified reduction defect of left upper limb

  • Q71.93—

    Unspecified reduction defect of upper limb, bilateral

  • Q72—

    Reduction defects of lower limb

  • Q72.0—

    Congenital complete absence of lower limb

  • Q72.00—

    Congenital complete absence of unspecified lower limb

  • Q72.01—

    Congenital complete absence of right lower limb

  • Q72.02—

    Congenital complete absence of left lower limb

  • Q72.03—

    Congenital complete absence of lower limb, bilateral

  • Q72.1—

    Congenital absence of thigh and lower leg with foot present

  • 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

  • Q72.2—

    Congenital absence of both lower leg and foot

  • 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

  • Q72.3—

    Congenital absence of foot and toe(s)

  • 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

  • Q72.4—

    Longitudinal reduction defect of femur

  • 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

  • Q72.5—

    Longitudinal reduction defect of tibia

  • Q72.50—

    Longitudinal reduction defect of unspecified tibia

  • Q72.51—

    Longitudinal reduction defect of right tibia

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