Q04.5 MEGALENCEPHALY

Code Information

  • Diagnosis Code: Q04.5
  • Short Description: Megalencephaly
  • Long Description: Megalencephaly
  • Code Version: 2025 ICD-10-CM

The code Q04.5 is VALID for claim submission

Code Classification

Synonyms

  • Bilateral megalencephaly
  • Familial megalencephaly
  • Hemimegalencephaly
  • Macroencephaly
  • Macroencephaly
  • Macroencephaly
  • Macroencephaly
  • Megalencephalic leukoencephalopathy with subcortical cysts
  • Megalencephaly, polymicrogyria, postaxial polydactyly, hydrocephalus syndrome
  • Megalencephaly, severe kyphoscoliosis, overgrowth 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: 10/1/2025
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