Q03.9

Congenital hydrocephalus, unspecified

Billable / specificHCC V28 182POA exempt

Q03.9 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.

Inclusion terms

Includes (from Q03)

  • hydrocephalus in newborn
  • Note: Codes from this chapter are not for use on maternal records

Excludes1

Not coded here — never report together with this code.

  • Arnold-Chiari syndrome, type II (Q07.0-) (from Q03)
  • acquired hydrocephalus (G91.-) (from Q03)
  • hydrocephalus due to congenital toxoplasmosis (P37.1) (from Q03)
  • hydrocephalus with spina bifida (Q05.0-Q05.4) (from Q03)

Excludes2

Not included here — may be reported together when both conditions exist.

  • inborn errors of metabolism (E70-E88) (from Q03)

Also known as

  • Absence, skull bone, with hydrocephalus
  • Agenesis, skull, with hydrocephalus
  • Anomaly, anomalous, skull, with hydrocephalus
  • Degeneration, degenerative, brain, in congenital hydrocephalus
  • Distortion, skull boneNEC, with hydrocephalus
  • Hydrocephalus, congenital
  • Hydrocephalus, newborn
  • Hypoplasia, hypoplastic, skull, with hydrocephalus

Parent code

  • Q03Congenital hydrocephalusHeader

Related codes

  • Q03.0Malformations of aqueduct of SylviusBillable
  • Q03.1Atresia of foramina of Magendie and LuschkaBillable
  • Q03.8Other congenital hydrocephalusBillable

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