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Diagnosis Code

Q04.5 MEGALENCEPHALY


Code Information

Diagnosis Code: Q04.5

Short Description: Megalencephaly

Long Description: Megalencephaly

The code Q04.5 is VALID for claim submission

Code Classification:

  • Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
    • Congenital malformations of the nervous system (Q00-Q07)
      • Other congenital malformations of brain (Q04)
        • Q04.5 Megalencephaly

Code Version: 2022 ICD-10-CM


Synonyms

  • Bilateral megalencephaly
  • Familial megalencephaly
  • Hemimegalencephaly
  • Macroencephaly
  • Macroencephaly
  • Macroencephaly
  • Megalencephalic leukoencephalopathy with subcortical cysts
  • Megalencephaly, polymicrogyria, postaxial polydactyly, hydrocephalus syndrome
  • Polyhydramnios, megalencephaly, symptomatic epilepsy syndrome
  • Sporadic megalencephaly

Crosswalk Information

ICD-10 Code ICD-9 Code ICD-9 Description
Q04.5 Right Arrow 742.4 Brain anomaly NEC

This ICD-10 to ICD-9 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-10 Code ICD-10 Description
Q04 Other congenital malformations of brain
Q04.0 Congenital malformations of corpus callosum
Q04.1 Arhinencephaly
Q04.2 Holoprosencephaly
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

This page was last updated on: 10/1/2023

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