2027 ICD-10-CM Diagnosis Code Q07Other congenital malformations of nervous system

ICD-10-CM Codes›Q00-Q99›Q00-Q07›Q07

ICD-10-CM Q07
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

Q07 is a non-billable ICD-10-CM category code for other congenital malformations of nervous system, so it cannot be submitted on claims. Use a more specific code from this category instead, such as Q07.00, Q07.01, Q07.02, and Q07.03.

Code Identity

ICD-10-CM Code
Q07
Billable Status
No — Non-Billable Category
Code Describes
Other congenital malformations of nervous system
Short Description
Other congenital malformations of nervous system
Same as the full description in the CMS dataset.
Chapter
Q00-Q07
Congenital malformations of the nervous system

Code Classification

ChapterQ00-Q99Congenital malformations, deformations and chromosomal abnormalities
SectionQ00-Q07Congenital malformations of the nervous system
CategoryQ07Other congenital malformations of nervous system
This CodeQ07Other congenital malformations of nervous system

Specific Coding for Other congenital malformations of nervous systemOverview

Non-specific codes like Q07 require more characters. Use one of these billable codes instead:

  • Q07.0 for Arnold-Chiari syndrome

  • Use Q07.00 for Arnold-Chiari syndrome without spina bifida or hydrocephalus

  • Use Q07.01 for Arnold-Chiari syndrome with spina bifida

  • Use Q07.02 for Arnold-Chiari syndrome with hydrocephalus

  • Use Q07.03 for Arnold-Chiari syndrome with spina bifida and hydrocephalus

  • Use Q07.8 for Other specified congenital malformations of nervous system

  • Use Q07.9 for Congenital malformation of nervous system, unspecified

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to Q07: its own notes plus those printed at Chapter 17. A note printed at a category, block or chapter applies to every code under it.

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

On Q07 itself
  • congenital central alveolar hypoventilation syndrome (G47.35)
  • familial dysautonomia [Riley-Day] (G90.1)
  • neurofibromatosis (nonmalignant) (Q85.0-)
From Chapter 17 (Q00-QA1) Congenital malformations, deformations and chromosomal abnormalities applies to 900 codes
  • inborn errors of metabolism (E70-E88)

Notes

General instructions on how these codes are used.

From Chapter 17 (Q00-QA1) Congenital malformations, deformations and chromosomal abnormalities applies to 900 codes
  • Codes from this chapter are not for use on maternal records

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name Q07, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming Q07: they are not reported together with it, unless the two conditions are unrelated.

  • G91 Hydrocephalus
    Arnold-Chiari syndrome with hydrocephalus (Q07.-)

Patient EducationClinical

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.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About Q07Overview

What is the ICD-10 code for other congenital malformations of nervous system?

Q07 is the ICD-10-CM category for other congenital malformations of nervous system, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is Q07 (Other congenital malformations of nervous system) a billable code?

No. This is a category header that groups the codes for other congenital malformations of nervous system, and headers cannot be submitted on claims. Claims for other congenital malformations of nervous system need a more specific code from this category, such as Q07.00, Q07.01, and Q07.02.