Specific code 2012 ICD-9-CM Diagnosis Code 742.2
Congenital reduction deformities of brain
  • Short description: Reduction deform, brain.
  • ICD-9-CM 742.2 will be replaced by an equivalent ICD-10-CM code (or codes) when the United States transitions from ICD-9-CM to ICD-10-CM on October 1, 2015.
  • ICD-9-CM 742.2 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
  • You are viewing the 2012 version of ICD-9-CM 742.2.
  • More recent version(s) of ICD-9-CM 742.2: 2013 2014.
Disease Synonyms
  • Absent corpus callosum
  • Agenesis of corpus callosum (disorder)
  • Congenital hypoplasia of part of brain (disorder)
  • Holoprosencephaly sequence
  • Hypoplasia of part of brain, congenital
  • Lissencephaly
  • Microgyria
  • Reduction deformities of brain (disorder)
  • Reduction deformity of brain, congenital
  • Septo optic dysplasia
  • Septo-optic dysplasia sequence (disorder)
Applies To
  • Absence of part of brain
  • Agenesis of part of brain
  • Agyria
  • Aplasia of part of brain
  • Arhinencephaly
  • Holoprosencephaly
  • Hypoplasia of part of brain
  • Microgyria
Convert to ICD-10-CM: 742.2 converts approximately to:
  • 2014 ICD-10-CM Q04.1 Arhinencephaly
    Or:
  • 2014 ICD-10-CM Q04.2 Holoprosencephaly
    Or:
  • 2014 ICD-10-CM Q04.3 Other reduction deformities of brain
ICD-9-CM Volume 2 Index entries containing back-references to 742.2:
  • Absence (organ or part) (complete or partial)
    • brain 740.0
      • specified part 742.2
    • cerebellum (congenital) (vermis) 742.2
    • corpus callosum (congenital) 742.2
    • vermis of cerebellum 742.2
  • Agenesis - see also Absence, by site, congenital
    • brain 740.0
      • specified part 742.2
    • cerebellum 742.2
    • corpus callosum 742.2
    • vermis of cerebellum 742.2
  • Agyria 742.2
  • Anomaly, anomalous (congenital) (unspecified type) 759.9
  • Aplasia - see also Agenesis
    • brain 740.0
      • specified part 742.2
    • cerebellar 742.2
    • corpus callosum 742.2
  • Arhinencephaly 742.2
  • Arnold-Chiari obstruction or syndrome (see also Spina bifida) 741.0
    • type IV 742.2
  • Arrhinencephaly 742.2
    • due to
  • Chiari's
    • malformation
      • type I 348.4
      • type II (see also Spina bifida) 741.0
      • type III 742.0
      • type IV 742.2
  • Deformity 738.9
  • Holoprosencephaly 742.2
  • Hypoplasia, hypoplasis 759.89
    • brain 742.1
      • gyri 742.2
      • specified part 742.2
    • cerebellum 742.2
    • corpus callosum 742.2
  • Lissencephalia, lissencephaly 742.2
  • Malformation (congenital) - see also Anomaly
    • Chiari
      • type I 348.4
      • type II (see also Spina bifida) 741.0
      • type III 742.0
      • type IV 742.2
  • Microgyria (congenital) 742.2
  • Nondevelopment
    • brain 742.1
      • specified part 742.2
  • Polymicrogyria 742.2
  • Syndrome - see also Disease
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 742.2 is one of thousands of ICD-9-CM codes used in healthcare. Although ICD-9-CM and CPT codes are largely numeric, they differ in that CPT codes describe medical procedures and services. Can't find a code? Start at the root of ICD-9-CM, check the 2012 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.