2024 ICD-10-CM Diagnosis Code Q07.8

Other specified congenital malformations of nervous system

Short Description:
Other specified congenital malformations of nervous system
Is Billable?
Yes - Valid for Submission
Code Navigator:

Code Classification

  • Congenital malformations, deformations and chromosomal abnormalities
    • Congenital malformations of the nervous system
      • Other congenital malformations of nervous system

Q07.8 is a billable diagnosis code used to specify a medical diagnosis of other specified congenital malformations of nervous system. 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:

  • Abnormality of neurogenesis
  • Aganglionosis of parasympathetic nerve ganglia
  • Agenesis of nerve
  • Aplasia of optic nerve
  • Brachial plexus displacement
  • Cataract, congenital heart disease, neural tube defect syndrome
  • Cerebral meningeal adhesions
  • Cerebro-oculo-facio-skeletal syndrome
  • Cerebrooculonasal syndrome
  • Cochlear nerve disorder
  • Congenital achiasma
  • Congenital adhesions of cerebral meninges
  • Congenital anomaly of cochlea
  • Congenital anomaly of macula
  • Congenital anomaly of membranous labyrinth
  • Congenital anomaly of optic nerve
  • Congenital anomaly of vestibule of inner ear
  • Congenital anomaly of visual system
  • Congenital deficiency of cochlear nerve
  • Congenital degeneration of nervous system
  • Congenital disorder of facial nerve
  • Congenital hypomyelinating neuropathy
  • Congenital hypoplasia of fovea centralis
  • Congenital indifference to pain
  • Congenital ischemic atrophy of central nervous system structure
  • Congenital malformation of the meninges
  • Congenital malformation of the meninges
  • Congenital spastic foot
  • Deafness, encephaloneuropathy, obesity, valvulopathy syndrome
  • Developmental displacement of brachial plexus
  • Disorder of neuronal migration and differentiation
  • Ectopic glial tissue
  • FBXL4-related encephalomyopathic mitochondrial DNA depletion syndrome
  • Finding of pain tolerance
  • Foveal hypoplasia, optic nerve decussation defect, anterior segment dysgenesis syndrome
  • Hydranencephaly
  • Immature ganglionosis of large intestine
  • Indifference to pain
  • MARCH syndrome
  • Marinesco-Sjögren syndrome
  • Mega cisterna magna
  • Meningeal adhesions
  • Mitochondrial DNA depletion syndrome encephalomyopathic form
  • Mitochondrial DNA depletion syndrome encephalomyopathic form
  • Mitochondrial DNA depletion syndrome encephalomyopathic form
  • Mitochondrial DNA depletion syndrome, encephalomyopathic form with variable craniofacial anomalies
  • Neuroectodermal melanolysosomal disease
  • Neuronal choristoma
  • Neuronal heterotopia
  • Polycystic lipomembranous osteodysplasia with sclerosing leukoencephalopathy
  • Port-wine nevi, mega cisterna magna, hydrocephalus syndrome
  • Port-wine stain of skin
  • RRM2B-related mitochondrial DNA depletion syndrome, encephalomyopathic form with renal tubulopathy
  • Schisis association syndrome
  • Spastic foot
  • X-linked periventricular heterotopia

Clinical Information

  • Hydranencephaly-. a congenital condition where the greater portions of the cerebral hemispheres and corpus striatum are replaced by csf and glial tissue. the meninges and the skull are well formed, which is consistent with earlier normal embryogenesis of the telencephalon. bilateral occlusions of the internal carotid arteries in utero is a potential mechanism. clinical features include intact brainstem reflexes without evidence of higher cortical activity. (menkes, textbook of child neurology, 5th ed, p307)
  • Hydranencephaly-. a rare congenital brain disorder in which the cerebral hemispheres are absent and replaced by sacs that contain cerebrospinal fluid. signs and symptoms include irritability, increased muscle tone, seizures, and hydrocephalus. the prognosis is poor.

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 nerve
  • Displacement of brachial plexus
  • Jaw-winking syndrome
  • Marcus Gunn's syndrome

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)

Q07.8 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 to ICD-9-CM Code

Source ICD-10-CM CodeTarget ICD-9-CM Code
Q07.8742.8 - Nervous system anom NEC
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]

Neural Tube Defects

Neural tube defects are birth defects of the brain, spine, or spinal cord. They happen in the first month of pregnancy, often before a woman even knows that she is pregnant. The two most common neural tube defects are spina bifida and anencephaly. In spina bifida, the fetal spinal column doesn't close completely. There is usually nerve damage that causes at least some paralysis of the legs. In anencephaly, most of the brain and skull do not develop. Babies with anencephaly are usually either stillborn or die shortly after birth. Another type of defect, Chiari malformation, causes the brain tissue to extend into the spinal canal.

The exact causes of neural tube defects aren't known. You're at greater risk of having an infant with a neural tube defect if you:

  • Have obesity
  • Have poorly controlled diabetes
  • Take certain antiseizure medicines

Getting enough folic acid, a type of B vitamin, before and during pregnancy prevents most neural tube defects.

Neural tube defects are usually diagnosed before the infant is born, through lab or imaging tests. There is no cure for neural tube defects. The nerve damage and loss of function that are present at birth are usually permanent. However, a variety of treatments can sometimes prevent further damage and help with complications.

NIH: National Institute of Child Health and Human Development

[Learn More in MedlinePlus]

Spinal Cord Diseases

Your spinal cord is a bundle of nerves that runs down the middle of your back. It carries signals back and forth between your body and your brain. It is protected by your vertebrae, which are the bone disks that make up your spine. If you have an accident that damages the vertebrae or other parts of the spine, this can also injure the spinal cord. Other spinal cord problems include:

  • Tumors
  • Infections such as meningitis and polio
  • Inflammatory diseases
  • Autoimmune diseases
  • Degenerative diseases such as amyotrophic lateral sclerosis and spinal muscular atrophy

Symptoms vary but might include pain, numbness, loss of sensation and muscle weakness. These symptoms can occur around the spinal cord, and also in other areas such as your arms and legs. Treatments often include medicines and surgery.

[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.