2020 ICD-10-CM Diagnosis Code Q03.9

Congenital hydrocephalus, unspecified

    2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
  • Q03.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM Q03.9 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of Q03.9 - other international versions of ICD-10 Q03.9 may differ.
The following code(s) above Q03.9 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 Q03.9:
  • 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
  • Q03
    ICD-10-CM Diagnosis Code Q03

    Congenital hydrocephalus

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Includes
    • hydrocephalus in newborn
    Type 1 Excludes
    • Arnold-Chiari syndrome, type II (Q07.0-)
    • acquired hydrocephalus (G91.-)
    • hydrocephalus due to congenital toxoplasmosis (P37.1)
    • hydrocephalus with spina bifida (Q05.0-Q05.4)
    Congenital hydrocephalus
Approximate Synonyms
  • Congenital hydrocephalus
  • Hydrocephalus, congenital
Clinical Information
  • Hydrocephalus that is present at birth.
Present On Admission
POA Help
"Present On Admission" is defined as present at the time the order for inpatient admission occurs — conditions that develop during an outpatient encounter, including emergency department, observation, or outpatient surgery, are considered POA.
  • Q03.9 is considered exempt from POA reporting.
ICD-10-CM Q03.9 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 091 Other disorders of nervous system with mcc
  • 092 Other disorders of nervous system with cc
  • 093 Other disorders of nervous system without cc/mcc
  • 791 Prematurity with major problems
  • 793 Full term neonate with major problems

Convert Q03.9 to ICD-9-CM

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

Diagnosis Index entries containing back-references to Q03.9:
  • Absence (of) (organ or part) (complete or partial)
    • skull bone (congenital) Q75.8
      ICD-10-CM Diagnosis Code Q75.8

      Other specified congenital malformations of skull and face bones

        2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
      Applicable To
      • Absence of skull bone, congenital
      • Congenital deformity of forehead
      • Platybasia
  • Agenesis
    • skull (bone) Q75.8
      ICD-10-CM Diagnosis Code Q75.8

      Other specified congenital malformations of skull and face bones

        2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
      Applicable To
      • Absence of skull bone, congenital
      • Congenital deformity of forehead
      • Platybasia
  • Anomaly, anomalous (congenital) (unspecified type) Q89.9
    ICD-10-CM Diagnosis Code Q89.9

    Congenital malformation, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
    Applicable To
    • Congenital anomaly NOS
    • Congenital deformity NOS
    • bone Q79.9
      ICD-10-CM Diagnosis Code Q79.9

      Congenital malformation of musculoskeletal system, unspecified

        2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
      Applicable To
      • Congenital anomaly of musculoskeletal system NOS
      • Congenital deformity of musculoskeletal system NOS
      • skull Q75.9
        ICD-10-CM Diagnosis Code Q75.9

        Congenital malformation of skull and face bones, unspecified

          2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
        Applicable To
        • Congenital anomaly of face bones NOS
        • Congenital anomaly of skull NOS
    • skull Q75.9
      ICD-10-CM Diagnosis Code Q75.9

      Congenital malformation of skull and face bones, unspecified

        2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
      Applicable To
      • Congenital anomaly of face bones NOS
      • Congenital anomaly of skull NOS
  • Deformity Q89.9
    ICD-10-CM Diagnosis Code Q89.9

    Congenital malformation, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
    Applicable To
    • Congenital anomaly NOS
    • Congenital deformity NOS
    • skull (acquired) M95.2
      ICD-10-CM Diagnosis Code M95.2

      Other acquired deformity of head

        2016 2017 2018 2019 2020 Billable/Specific Code
      • congenital Q75.8
        ICD-10-CM Diagnosis Code Q75.8

        Other specified congenital malformations of skull and face bones

          2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
        Applicable To
        • Absence of skull bone, congenital
        • Congenital deformity of forehead
        • Platybasia
  • Degeneration, degenerative
    • brain (cortical) (progressive) G31.9
      ICD-10-CM Diagnosis Code G31.9

      Degenerative disease of nervous system, unspecified

        2016 2017 2018 2019 2020 Billable/Specific Code
  • Distortion(s) (congenital)
    • skull bone(s) Q75.8
      ICD-10-CM Diagnosis Code Q75.8

      Other specified congenital malformations of skull and face bones

        2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
      Applicable To
      • Absence of skull bone, congenital
      • Congenital deformity of forehead
      • Platybasia
  • Hydrocephalus (acquired) (external) (internal) (malignant) (recurrent) G91.9
    ICD-10-CM Diagnosis Code G91.9

    Hydrocephalus, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
  • Hypoplasia, hypoplastic
    • skull (bone) Q75.8
      ICD-10-CM Diagnosis Code Q75.8

      Other specified congenital malformations of skull and face bones

        2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
      Applicable To
      • Absence of skull bone, congenital
      • Congenital deformity of forehead
      • Platybasia
  • Imperfect
    • closure (congenital)
      • skull Q75.0
        ICD-10-CM Diagnosis Code Q75.0

        Craniosynostosis

          2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
        Applicable To
        • Acrocephaly
        • Imperfect fusion of skull
        • Oxycephaly
        • Trigonocephaly

ICD-10-CM Codes Adjacent To Q03.9
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
Q04.5 Megalencephaly
Q04.6 Congenital cerebral cysts
Q04.8 Other specified congenital malformations of brain
Q04.9 Congenital malformation of brain, unspecified

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