Q03.1

Atresia of foramina of Magendie and Luschka

Billable / specificHCC V28 182POA exempt

Q03.1 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.

Inclusion terms

Applicable to

  • Dandy-Walker syndrome

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

  • Dandy-Walker syndrome
  • Atresia, atretic, foramen of, Luschka
  • Atresia, atretic, foramen of, Magendie
  • Block, blocked, foramen Magendie, congenital
  • Cyst, Dandy-Walker
  • Deformity, Dandy-Walker
  • Hydrocephalus, foramen Magendie block, congenital
  • Syndrome, Dandy-Walker

Parent code

  • Q03Congenital hydrocephalusHeader

Related codes

  • Q03.0Malformations of aqueduct of SylviusBillable
  • Q03.8Other congenital hydrocephalusBillable
  • Q03.9Congenital hydrocephalus, unspecifiedBillable

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