MCMedicalCodingSoftware
Q03

Q03: Congenital hydrocephalus

Non-billable headerICD-10-CM

Q03 is a non-billable header ICD-10-CM code for congenital hydrocephalus. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

  • 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)

Includes

Conditions this code covers.

  • hydrocephalus in newborn

Other codes that can never be billed with Q03

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • Q75Other congenital malformations of skull and face bones
  • G91Hydrocephalus

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead Q03

4 child codes. Green means billable.

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.