ICD-10 Diagnosis Code Q04.9

Congenital malformation of brain, unspecified

Diagnosis Code Q04.9

ICD-10: Q04.9
Short Description: Congenital malformation of brain, unspecified
Long Description: Congenital malformation of brain, unspecified
This is the 2017 version of the ICD-10-CM diagnosis code Q04.9

Code Classification
  • Congenital malformations, deformations and chromosomal abnormalities
    • Congenital malformations of the nervous system (Q00-Q07)
      • Other congenital malformations of brain (Q04)

Information for Medical Professionals

Convert to ICD-9 Additional informationCallout TooltipGeneral Equivalence Map
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

Present on Admission (POA) Additional informationCallout TooltipPresent on Admission
The Present on Admission (POA) indicator is used for diagnosis codes included in claims involving inpatient admissions to general acute care hospitals. POA indicators must be reported to CMS on each claim to facilitate the grouping of diagnoses codes into the proper Diagnostic Related Groups (DRG). CMS publishes a listing of specific diagnosis codes that are exempt from the POA reporting requirement.

The code Q04.9 is exempt from POA reporting.

  • Anomalies of cerebellum
  • Anomalies of cerebrum
  • Aplasia cutis congenita secondary to malformation syndrome
  • Cerebellar cortical dysplasia
  • Cerebro-costo-mandibular syndrome
  • Congenital anomaly of brain
  • Congenital anomaly of cerebrum
  • Congenital brain damage
  • Congenital micrognathism
  • Congenital muscular hypertrophy-cerebral syndrome
  • Hypoplasia of mandibular bone
  • Multiple brain anomalies
  • Oculo-cerebro-cutaneous syndrome

Index of Diseases and Injuries
References found for the code Q04.9 in the Index of Diseases and Injuries:

Information for Patients

Brain Malformations

Also called: Cephalic disorders

Most brain malformations begin long before a baby is born. Something damages the developing nervous system or causes it to develop abnormally. Sometimes it's a genetic problem. In other cases, exposure to certain medicines, infections, or radiation during pregnancy interferes with brain development. Parts of the brain may be missing, abnormally small or large, or not fully developed.

Treatment depends upon the problem. In many cases, treatment only helps with symptoms. It may include antiseizure medicines, shunts to drain fluid from the brain, and physical therapy.

There are head malformations that do not involve the brain. Craniofacial disorders are the result of abnormal growth of soft tissue and bones in the face and head. It's common for new babies to have slightly uneven heads, but parents should watch the shape of their baby's head for possible problems.

NIH: National Institute of Neurological Disorders and Stroke

  • Brain surgery
  • Brain surgery - discharge

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