2020 ICD-10-CM Diagnosis Code Q03

Congenital hydrocephalus

    2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • Q03 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2020 edition of ICD-10-CM Q03 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of Q03 - other international versions of ICD-10 Q03 may differ.
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as Q03. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • Arnold-Chiari syndrome, type II (
    ICD-10-CM Diagnosis Code Q07.0

    Arnold-Chiari syndrome

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Applicable To
    • Arnold-Chiari syndrome, type II
    Type 1 Excludes
    • Arnold-Chiari syndrome, type III (Q01.-)
    • Arnold-Chiari syndrome, type IV (Q04.8)
    Q07.0-
    )
  • acquired hydrocephalus (
    ICD-10-CM Diagnosis Code G91
    • G91 Hydrocephalus
      • G91.0 Communicating hydrocephalus
      • G91.1 Obstructive hydrocephalus
      • G91.2 (Idiopathic) normal pressure hydrocephalus
      • G91.3 Post-traumatic hydrocephalus, unspecified
      • G91.4 Hydrocephalus in diseases classified elsewher...
      • G91.8 Other hydrocephalus
      • G91.9 Hydrocephalus, unspecified
    G91.-
    )
  • hydrocephalus due to congenital toxoplasmosis (
    ICD-10-CM Diagnosis Code P37.1

    Congenital toxoplasmosis

      2016 2017 2018 2019 2020 Billable/Specific Code Code on Newborn Record
    Applicable To
    • Hydrocephalus due to congenital toxoplasmosis
    P37.1
    )
  • hydrocephalus with spina bifida (
    ICD-10-CM Diagnosis Code Q05.0

    Cervical spina bifida with hydrocephalus

      2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
    Q05.0-
    ICD-10-CM Diagnosis Code Q05.4

    Unspecified spina bifida with hydrocephalus

      2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
    Q05.4
    )
Includes
Includes Help
"Includes" further defines, or give examples of, the content of the code or category.
  • hydrocephalus in newborn
The following code(s) above Q03 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to Q03:
  • Q00-Q99
    2020 ICD-10-CM Range Q00-Q99

    Congenital malformations, deformations and chromosomal abnormalities

    Note
    • Codes from this chapter are not for use on maternal records
    Type 2 Excludes
    • inborn errors of metabolism (E70-E88)
    Congenital malformations, deformations and chromosomal abnormalities
Clinical Information
  • Hydrocephalus that is present at birth.
Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
Code annotations containing back-references to Q03:
  • Type 1 Excludes: G91
    , Q75
    ICD-10-CM Diagnosis Code G91

    Hydrocephalus

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Includes
    • acquired hydrocephalus
    Type 1 Excludes
    • Arnold-Chiari syndrome with hydrocephalus (Q07.-)
    • congenital hydrocephalus (Q03.-)
    • spina bifida with hydrocephalus (Q05.-)
    ICD-10-CM Diagnosis Code Q75

    Other congenital malformations of skull and face bones

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • congenital malformation of face NOS (Q18.-)
    • congenital malformation syndromes classified to Q87.-
    • dentofacial anomalies [including malocclusion] (M26.-)
    • musculoskeletal deformities of head and face (Q67.0-Q67.4)
    • skull defects associated with congenital anomalies of brain such as:
    • anencephaly (Q00.0)
    • encephalocele (Q01.-)
    • hydrocephalus (Q03.-)
    • microcephaly (Q02)
ICD-10-CM Codes Adjacent To Q03
Q00.0 Anencephaly
Q00.1 Craniorachischisis
Q00.2 Iniencephaly
Q01 Encephalocele
Q01.0 Frontal encephalocele
Q01.1 Nasofrontal encephalocele
Q01.2 Occipital encephalocele
Q01.8 Encephalocele of other sites
Q01.9 Encephalocele, unspecified
Q02 Microcephaly
Q03 Congenital hydrocephalus
Q03.0 Malformations of aqueduct of Sylvius
Q03.1 Atresia of foramina of Magendie and Luschka
Q03.8 Other congenital hydrocephalus
Q03.9 Congenital hydrocephalus, unspecified
Q04 Other congenital malformations of brain
Q04.0 Congenital malformations of corpus callosum
Q04.1 Arhinencephaly
Q04.2 Holoprosencephaly
Q04.3 Other reduction deformities of brain
Q04.4 Septo-optic dysplasia of brain

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.