Q01

Encephalocele

FY2027Chapter 17: Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders/Q00–Q07 Congenital malformations of the nervous system

Non-billable headerNot valid on its own. Use one of the more specific codes under it.

Q01 is a non-billable ICD-10-CM code category for encephalocele. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are Q01.0 Frontal encephalocele, Q01.1 Nasofrontal encephalocele, Q01.2 Occipital encephalocele, Q01.8 Encephalocele of other sites and 1 more. Its coding notes include 1 Excludes1 entry and 1 Excludes2 entry.

Guidelines tip

From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.

Chapter 17 codes can be used for life. Manifestations that are an inherent part of a specifically coded anomaly are not coded separately. A corrected malformation is reported with a personal history code.

Guidelines I.C.17Congenital malformations and genetic disordersRead the official text

Excludes1

Not coded here. The listed conditions generally should not be reported together.

This code
  • Meckel-Gruber syndrome (Q61.9)

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Also from chapter/block level (1 note)
Inherited from Chapter 17 Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders
  • inborn errors of metabolism (E70-E88)

Includes

Further defines or gives examples of the content of the category.

This code
  • Arnold-Chiari syndrome, type III
  • encephalocystocele
  • encephalomyelocele
  • hydroencephalocele
  • hydromeningocele, cranial
  • meningocele, cerebral
  • meningoencephalocele

Notes

Also from chapter/block level (1 note)
Inherited from Chapter 17 Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders
  • Codes from this chapter are not for use on maternal records

More specific codes under Q01 5