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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  • Q70.02|

    Fused fingers, left hand

  • Q70.03|

    Fused fingers, bilateral

  • Q70.1|

    Webbed fingers

  • Q70.10|

    Webbed fingers, unspecified hand

  • Q70.11|

    Webbed fingers, right hand

  • Q70.12|

    Webbed fingers, left hand

  • Q70.13|

    Webbed fingers, bilateral

  • Q70.2|

    Fused toes

  • Q70.20|

    Fused toes, unspecified foot

  • Q70.21|

    Fused toes, right foot

  • Q70.22|

    Fused toes, left foot

  • Q70.23|

    Fused toes, bilateral

  • Q70.3|

    Webbed toes

  • Q70.30|

    Webbed toes, unspecified foot

  • Q70.31|

    Webbed toes, right foot

  • Q70.32|

    Webbed toes, left foot

  • Q70.33|

    Webbed toes, bilateral

  • Q70.4|

    Polysyndactyly, unspecified

  • Q70.9|

    Syndactyly, unspecified

  • Q71|

    Reduction defects of upper limb

  • Q71.0|

    Congenital complete absence of upper limb

  • Q71.00|

    Congenital complete absence of unspecified upper limb

  • Q71.01|

    Congenital complete absence of right upper limb

  • Q71.02|

    Congenital complete absence of left upper limb

  • Q71.03|

    Congenital complete absence of upper limb, bilateral

  • Q71.1|

    Congenital absence of upper arm and forearm with hand present

  • Q71.10|

    Congenital absence of unspecified upper arm and forearm with hand present

  • Q71.11|

    Congenital absence of right upper arm and forearm with hand present

  • Q71.12|

    Congenital absence of left upper arm and forearm with hand present

  • Q71.13|

    Congenital absence of upper arm and forearm with hand present, bilateral

  • Q71.2|

    Congenital absence of both forearm and hand

  • Q71.20|

    Congenital absence of both forearm and hand, unspecified upper limb

  • Q71.21|

    Congenital absence of both forearm and hand, right upper limb

  • Q71.22|

    Congenital absence of both forearm and hand, left upper limb

  • Q71.23|

    Congenital absence of both forearm and hand, bilateral

  • Q71.3|

    Congenital absence of hand and finger

  • Q71.30|

    Congenital absence of unspecified hand and finger

  • Q71.31|

    Congenital absence of right hand and finger

  • Q71.32|

    Congenital absence of left hand and finger

  • Q71.33|

    Congenital absence of hand and finger, bilateral

  • Q71.4|

    Longitudinal reduction defect of radius

  • Q71.40|

    Longitudinal reduction defect of unspecified radius

  • Q71.41|

    Longitudinal reduction defect of right radius

  • Q71.42|

    Longitudinal reduction defect of left radius

  • Q71.43|

    Longitudinal reduction defect of radius, bilateral

  • Q71.5|

    Longitudinal reduction defect of ulna

  • Q71.50|

    Longitudinal reduction defect of unspecified ulna

  • Q71.51|

    Longitudinal reduction defect of right ulna

  • Q71.52|

    Longitudinal reduction defect of left ulna

  • Q71.53|

    Longitudinal reduction defect of ulna, bilateral

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