Skip to content
Dx

ICD-10-CM 2027 diagnosis code

Q05Spina bifida

Not billable — use a more specific code

Q05 is a header code, so it can't be reported by itself. Choose one of the 10 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About Q05

Q05 is the ICD-10-CM diagnosis code for spina bifida. It belongs to block Q00-Q07 (congenital malformations of the nervous system) and chapter 17 (congenital malformations, deformations, chromosomal abnormalities, and genetic disorders). It is a header code, so it can't be reported by itself; one of its 10 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: Q05.0 (hydrocephalus), Q05.1 (hydrocephalus), Q05.2 (hydrocephalus), Q05.3 (hydrocephalus), Q05.4 (hydrocephalus), Q05.5 (hydrocephalus), Q05.6 (hydrocephalus), Q05.7 (hydrocephalus) and 2 more.

Don't report Q05 together with the conditions in its Excludes1 note: Arnold-Chiari syndrome, type II (Q07.0-) and spina bifida occulta (Q76.0).

Use an additional code for any associated paraplegia (paraparesis) (G82.2-).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under Q05

Coding notes

IncludesFurther defines the content of the category
  • hydromeningocele (spinal)
  • meningocele (spinal)
  • meningomyelocele
  • myelocele
  • myelomeningocele
  • rachischisis
  • spina bifida (aperta)(cystica)
  • syringomyelocele
Excludes1Not coded here — never report together with this code
  • Arnold-Chiari syndrome, type II (Q07.0-)
  • spina bifida occulta (Q76.0)
Use additional codeAdd a secondary code to fully describe the condition
  • code for any associated paraplegia (paraparesis) (G82.2-)

Notes that apply from higher levels

Instructions written at a parent level also apply to Q05.

Broader instructions also apply from Chapter 17: Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders.

Codes whose notes reference Q05

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about Q05

Is Q05 billable?

No. Q05 is a header code. Report one of its more specific subcodes instead.