• Hydrocephalus (acquired) (external) (internal) (malignant) (recurrent) G91.9
    ICD-10-CM Diagnosis Code G91.9

    Hydrocephalus, unspecified

      2016 2017 2018 2019 Billable/Specific Code

    • aqueduct Sylvius stricture Q03.0
      ICD-10-CM Diagnosis Code Q03.0

      Malformations of aqueduct of Sylvius

        2016 2017 2018 2019 Billable/Specific Code POA Exempt
      Applicable To
      • Anomaly of aqueduct of Sylvius
      • Obstruction of aqueduct of Sylvius, congenital
      • Stenosis of aqueduct of Sylvius
    • causing disproportion O33.6
      ICD-10-CM Diagnosis Code O33.6

      Maternal care for disproportion due to hydrocephalic fetus

        2016 2017 2018 2019 Non-Billable/Non-Specific Code
      • with obstructed labor O66.3
        ICD-10-CM Diagnosis Code O66.3

        Obstructed labor due to other abnormalities of fetus

          2016 2017 2018 2019 Billable/Specific Code Maternity Dx (12-55 years) Female Dx
        Applicable To
        • Dystocia due to fetal ascites
        • Dystocia due to fetal hydrops
        • Dystocia due to fetal meningomyelocele
        • Dystocia due to fetal sacral teratoma
        • Dystocia due to fetal tumor
        • Dystocia due to hydrocephalic fetus
        Use Additional
        • code to identify cause of obstruction
    • communicating G91.0
      ICD-10-CM Diagnosis Code G91.0

      Communicating hydrocephalus

        2016 2017 2018 2019 Billable/Specific Code
      Applicable To
      • Secondary normal pressure hydrocephalus
    • congenital (external) (internal) Q03.9
      ICD-10-CM Diagnosis Code Q03.9

      Congenital hydrocephalus, unspecified

        2016 2017 2018 2019 Billable/Specific Code POA Exempt
      • specified NEC Q03.8
        ICD-10-CM Diagnosis Code Q03.8

        Other congenital hydrocephalus

          2016 2017 2018 2019 Billable/Specific Code POA Exempt
      • with spina bifida Q05.4
        ICD-10-CM Diagnosis Code Q05.4

        Unspecified spina bifida with hydrocephalus

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

          Cervical spina bifida with hydrocephalus

            2016 2017 2018 2019 Billable/Specific Code POA Exempt
        • dorsal Q05.1
          ICD-10-CM Diagnosis Code Q05.1

          Thoracic spina bifida with hydrocephalus

            2016 2017 2018 2019 Billable/Specific Code POA Exempt
          Applicable To
          • Dorsal spina bifida with hydrocephalus
          • Thoracolumbar spina bifida with hydrocephalus
        • lumbar Q05.2
          ICD-10-CM Diagnosis Code Q05.2

          Lumbar spina bifida with hydrocephalus

            2016 2017 2018 2019 Billable/Specific Code POA Exempt
          Applicable To
          • Lumbosacral spina bifida with hydrocephalus
        • lumbosacral Q05.2
          ICD-10-CM Diagnosis Code Q05.2

          Lumbar spina bifida with hydrocephalus

            2016 2017 2018 2019 Billable/Specific Code POA Exempt
          Applicable To
          • Lumbosacral spina bifida with hydrocephalus
        • sacral Q05.3
          ICD-10-CM Diagnosis Code Q05.3

          Sacral spina bifida with hydrocephalus

            2016 2017 2018 2019 Billable/Specific Code POA Exempt
        • thoracic Q05.1
          ICD-10-CM Diagnosis Code Q05.1

          Thoracic spina bifida with hydrocephalus

            2016 2017 2018 2019 Billable/Specific Code POA Exempt
          Applicable To
          • Dorsal spina bifida with hydrocephalus
          • Thoracolumbar spina bifida with hydrocephalus
        • thoracolumbar Q05.1
          ICD-10-CM Diagnosis Code Q05.1

          Thoracic spina bifida with hydrocephalus

            2016 2017 2018 2019 Billable/Specific Code POA Exempt
          Applicable To
          • Dorsal spina bifida with hydrocephalus
          • Thoracolumbar spina bifida with hydrocephalus
    • due to toxoplasmosis P37.1
      (congenital)
      ICD-10-CM Diagnosis Code P37.1

      Congenital toxoplasmosis

        2016 2017 2018 2019 Billable/Specific Code Code on Newborn Record
      Applicable To
      • Hydrocephalus due to congenital toxoplasmosis
    • foramen Magendie block (acquired) G91.1
      ICD-10-CM Diagnosis Code G91.1

      Obstructive hydrocephalus

        2016 2017 2018 2019 Billable/Specific Code
      • congenital Q03.1
        - see also Hydrocephalus, congenital
        ICD-10-CM Diagnosis Code Q03.1

        Atresia of foramina of Magendie and Luschka

          2016 2017 2018 2019 Billable/Specific Code POA Exempt
        Applicable To
        • Dandy-Walker syndrome
    • in (due to)
      • infectious disease NEC B89
        ICD-10-CM Diagnosis Code B89

        Unspecified parasitic disease

          2016 2017 2018 2019 Billable/Specific Code
      • neoplastic disease NEC G91.4
        (see also Neoplasm)
        ICD-10-CM Diagnosis Code G91.4

        Hydrocephalus in diseases classified elsewhere

          2016 2017 2018 2019 Billable/Specific Code Manifestation Code
        Code First
        • underlying condition, such as:
        • congenital syphilis (A50.4-)
        • neoplasm (C00-D49)
        • plasminogen deficiency (E88.02)
        Type 1 Excludes
        • hydrocephalus due to congenital toxoplasmosis (P37.1)
      • parasitic disease B89
        ICD-10-CM Diagnosis Code B89

        Unspecified parasitic disease

          2016 2017 2018 2019 Billable/Specific Code
    • newborn Q03.9
      ICD-10-CM Diagnosis Code Q03.9

      Congenital hydrocephalus, unspecified

        2016 2017 2018 2019 Billable/Specific Code POA Exempt
    • noncommunicating G91.1
      ICD-10-CM Diagnosis Code G91.1

      Obstructive hydrocephalus

        2016 2017 2018 2019 Billable/Specific Code
    • normal pressure G91.2
      ICD-10-CM Diagnosis Code G91.2

      (Idiopathic) normal pressure hydrocephalus

        2016 2017 2018 2019 Billable/Specific Code
      Applicable To
      • Normal pressure hydrocephalus NOS
      • secondary G91.0
        ICD-10-CM Diagnosis Code G91.0

        Communicating hydrocephalus

          2016 2017 2018 2019 Billable/Specific Code
        Applicable To
        • Secondary normal pressure hydrocephalus
    • obstructive G91.1
      ICD-10-CM Diagnosis Code G91.1

      Obstructive hydrocephalus

        2016 2017 2018 2019 Billable/Specific Code
    • otitic G93.2
      ICD-10-CM Diagnosis Code G93.2

      Benign intracranial hypertension

        2016 2017 2018 2019 Billable/Specific Code
      Type 1 Excludes
      • hypertensive encephalopathy (I67.4)
    • post-traumatic NEC G91.3
      ICD-10-CM Diagnosis Code G91.3

      Post-traumatic hydrocephalus, unspecified

        2016 2017 2018 2019 Billable/Specific Code
    • secondary G91.4
      ICD-10-CM Diagnosis Code G91.4

      Hydrocephalus in diseases classified elsewhere

        2016 2017 2018 2019 Billable/Specific Code Manifestation Code
      Code First
      • underlying condition, such as:
      • congenital syphilis (A50.4-)
      • neoplasm (C00-D49)
      • plasminogen deficiency (E88.02)
      Type 1 Excludes
      • hydrocephalus due to congenital toxoplasmosis (P37.1)
      • post-traumatic G91.3
        ICD-10-CM Diagnosis Code G91.3

        Post-traumatic hydrocephalus, unspecified

          2016 2017 2018 2019 Billable/Specific Code
    • specified NEC G91.8
      ICD-10-CM Diagnosis Code G91.8

      Other hydrocephalus

        2016 2017 2018 2019 Billable/Specific Code
    • syphilitic, congenital A50.49
      ICD-10-CM Diagnosis Code A50.49

      Other late congenital neurosyphilis

        2016 2017 2018 2019 Billable/Specific Code
      Applicable To
      • Juvenile tabes dorsalis