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ICD-10-CM Codes
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Q00-Q99
Congenital malformations, deformations and chromosomal abnormalities
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Q00-Q07
Congenital malformations of the nervous system
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Q04-
Other congenital malformations of brain
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2019 ICD-10-CM Diagnosis Code Q04.8
Other specified congenital malformations of brain
2016 2017 2018 2019 Billable/Specific Code POA Exempt
- Q04.8 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- The 2019 edition of ICD-10-CM Q04.8 became effective on October 1, 2018.
- This is the American ICD-10-CM version of Q04.8 - other international versions of ICD-10 Q04.8 may differ.
Applicable To- Arnold-Chiari syndrome, type IV
- Macrogyria
The following code(s) above
Q04.8 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
- Applicable To annotations, or
- Code Also annotations, or
- Code First annotations, or
- Excludes1 annotations, or
- Excludes2 annotations, or
- Includes annotations, or
- Note annotations, or
- Use Additional annotations
that may be applicable to
Q04.8:
- Congenital cerebral ventriculomegaly
- Congenital ventriculomegaly
- Macrogyria
- Ventriculomegaly, brain
Present On AdmissionPOA Help
"Present On Admission" is defined as present at the time the order for inpatient admission occurs — conditions that develop during an outpatient encounter, including emergency department, observation, or outpatient surgery, are considered POA.
- Q04.8 is considered exempt from POA reporting.
ICD-10-CM Q04.8 is grouped within Diagnostic Related Group(s) (MS-DRG v36.0):
- 091 Other disorders of nervous system with mcc
- 092 Other disorders of nervous system with cc
- 093 Other disorders of nervous system without cc/mcc
- 793 Full term neonate with major problems
Convert Q04.8 to ICD-9-CM
Code History
- 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
- 2017 (effective 10/1/2016): No change
- 2018 (effective 10/1/2017): No change
- 2019 (effective 10/1/2018): No change
Code annotations containing back-references to Q04.8:
- Anomaly, anomalous (congenital) (unspecified type) Q89.9
ICD-10-CM Diagnosis Code Q89.9
Congenital malformation, unspecified
2016 2017 2018 2019 Billable/Specific Code POA Exempt
Applicable To- Congenital anomaly NOS
- Congenital deformity NOS
- meninges Q07.9
ICD-10-CM Diagnosis Code Q07.9
Congenital malformation of nervous system, unspecified
2016 2017 2018 2019 Billable/Specific Code POA Exempt
Applicable To- Congenital anomaly NOS of nervous system
- Congenital deformity NOS of nervous system
- Congenital disease or lesion NOS of nervous system
- Arnold-Chiari disease, obstruction or syndrome (type II) Q07.00
ICD-10-CM Diagnosis Code Q07.00
Arnold-Chiari syndrome without spina bifida or hydrocephalus
2016 2017 2018 2019 Billable/Specific Code POA Exempt
- Deformity Q89.9
ICD-10-CM Diagnosis Code Q89.9
Congenital malformation, unspecified
2016 2017 2018 2019 Billable/Specific Code POA Exempt
Applicable To- Congenital anomaly NOS
- Congenital deformity NOS
- meninges or membrane (congenital) Q07.9
ICD-10-CM Diagnosis Code Q07.9
Congenital malformation of nervous system, unspecified
2016 2017 2018 2019 Billable/Specific Code POA Exempt
Applicable To- Congenital anomaly NOS of nervous system
- Congenital deformity NOS of nervous system
- Congenital disease or lesion NOS of nervous system
- Dilatation
- Displacement, displaced
- brain stem, caudal Q04.8 (congenital)
- cerebellum, caudal Q04.8 (congenital)
- Distortion(s) (congenital)
- Ectopic, ectopia (congenital)
- brain Q04.8
- cerebral Q04.8
- Heterotopia, heterotopic - see also Malposition, congenital
- Macrogyria Q04.8 (congenital)
- Malformation (congenital) - see also Anomaly
- brain (multiple) Q04.9
ICD-10-CM Diagnosis Code Q04.9
Congenital malformation of brain, unspecified
2016 2017 2018 2019 Billable/Specific Code POA Exempt
Applicable To- Congenital anomaly NOS of brain
- Congenital deformity NOS of brain
- Congenital disease or lesion NOS of brain
- Multiple anomalies NOS of brain, congenital
- meninges or membrane (congenital) Q07.9
ICD-10-CM Diagnosis Code Q07.9
Congenital malformation of nervous system, unspecified
2016 2017 2018 2019 Billable/Specific Code POA Exempt
Applicable To- Congenital anomaly NOS of nervous system
- Congenital deformity NOS of nervous system
- Congenital disease or lesion NOS of nervous system
- Malposition
- Softening
- brain (necrotic) (progressive) G93.89
ICD-10-CM Diagnosis Code G93.89
Other specified disorders of brain
2016 2017 2018 2019 Billable/Specific Code
Applicable To- Postradiation encephalopathy
- Ulegyria Q04.8
ICD-10-CM Codes Adjacent To Q04.8
Q03.8 Other congenital hydrocephalus
Q03.9 Congenital hydrocephalus, unspecified
Q04 Other congenital malformations of brain
Q04.0 Congenital malformations of corpus callosum
Q04.3 Other reduction deformities of brain
Q04.4 Septo-optic dysplasia of brain
Q04.6 Congenital cerebral cysts
Q04.8
Other specified congenital malformations of brain
Q04.9 Congenital malformation of brain, unspecified
Q05.0 Cervical spina bifida with hydrocephalus
Q05.1 Thoracic spina bifida with hydrocephalus
Q05.2 Lumbar spina bifida with hydrocephalus
Q05.3 Sacral spina bifida with hydrocephalus
Q05.4 Unspecified spina bifida with hydrocephalus
Q05.5 Cervical spina bifida without hydrocephalus
Q05.6 Thoracic spina bifida without hydrocephalus
Q05.7 Lumbar spina bifida without hydrocephalus
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.
