2024 ICD-10-CM Diagnosis Code Q04.0

Congenital malformations of corpus callosum

ICD-10-CM Code:
Q04.0
ICD-10 Code for:
Congenital malformations of corpus callosum
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Chronic
Code Navigator:

Code Classification

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

Q04.0 is a billable diagnosis code used to specify a medical diagnosis of congenital malformations of corpus callosum. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024. The code is exempt from present on admission (POA) reporting for inpatient admissions to general acute care hospitals.

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Acrocallosal syndrome
  • Agenesis of corpus callosum
  • Agenesis of corpus callosum and abnormal genitalia syndrome
  • Agenesis of corpus callosum with lipoma
  • Agenesis of corpus callosum, intellectual disability, coloboma, micrognathia syndrome
  • Agenesis of corpus callosum, macrocephaly, hypertelorism syndrome
  • Andermann syndrome
  • Aplasia of corpus callosum
  • Atrophy of corpus callosum
  • Congenital coloboma of iris
  • Congenital hypoplasia of cerebrum
  • Congenital hypoplasia of cerebrum
  • Congenital hypoplasia of cerebrum
  • Congenital hypoplasia of cerebrum
  • Congenital malformation of corpus callosum
  • Disorder of serine metabolism
  • Hypoplasia of corpus callosum
  • Hypoplasia of corpus callosum
  • Hypoplasia of corpus callosum
  • Infantile osteopetrosis with neuroaxonal dysplasia syndrome
  • Intellectual disability, hypoplastic corpus callosum, preauricular tag syndrome
  • L1 syndrome
  • L1 syndrome
  • Mass of preauricular region
  • Microcephaly, corpus callosum and cerebellar vermis hypoplasia, facial dysmorphism, intellectual disability syndrome
  • Microcephaly, corpus callosum hypoplasia, intellectual disability, facial dysmorphism syndrome
  • Microcephaly, polymicrogyria, corpus callosum agenesis syndrome
  • Microcephaly, thin corpus callosum, intellectual disability syndrome
  • Partial agenesis of corpus callosum
  • Partial agenesis of corpus callosum
  • Partial corpus callosum agenesis, cerebellar vermis hypoplasia with posterior fossa cysts syndrome
  • Severe intellectual disability, agenesis of corpus callosum, facial dysmorphism, cerebellar ataxia syndrome
  • Spastic tetraplegia, thin corpus callosum, progressive postnatal microcephaly syndrome
  • Temtamy syndrome
  • White matter hypoplasia, corpus callosum agenesis, intellectual disability syndrome
  • X-linked complicated corpus callosum dysgenesis
  • X-linked lissencephaly with abnormal genitalia syndrome

Clinical Classification

Clinical Information

  • Agenesis of Corpus Callosum

    birth defect that results in a partial or complete absence of the corpus callosum. it may be isolated or a part of a syndrome (e.g., aicardi's syndrome; acrocallosal syndrome; andermann syndrome; and holoprosencephaly). clinical manifestations include neuromotor skill impairment and intellectual disability of variable severity.
  • Aicardi Syndrome

    a rare genetic disorder characterized by partial or complete absence of the corpus callosum, resulting in infantile spasms, mental retardation, and lesions of the retina or optic nerve.
  • Acrocallosal Syndrome

    autosomal recessive syndrome characterized by hypogenesis or agenesis of corpus callosum. clinical features include mental retardation; craniofacial abnormalities; digital malformations, and growth retardation.
  • Acrocallosal Syndrome

    a rare genetic syndrome characterized by agenesis of the corpus callosum, polydactyly, mental and motor retardation.

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.


Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • Agenesis of corpus callosum

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

Present on Admission (POA)

Q04.0 is exempt from POA reporting - 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. Review other POA exempt codes here.

CMS POA Indicator Options and Definitions

POA IndicatorReason for CodeCMS will pay the CC/MCC DRG?
YDiagnosis was present at time of inpatient admission.YES
NDiagnosis was not present at time of inpatient admission.NO
UDocumentation insufficient to determine if the condition was present at the time of inpatient admission.NO
WClinically undetermined - unable to clinically determine whether the condition was present at the time of inpatient admission.YES
1Unreported/Not used - Exempt from POA reporting. NO

Convert Q04.0 to ICD-9-CM

  • ICD-9-CM Code: 742.2 - Reduction deform, brain
    Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

Patient Education


Brain Malformations

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


[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.