ICD-10-CM Current in FY 2027

Q01.9

Encephalocele, unspecified

Release: FY 2027
Effective: October 1, 2026

Official source

Hierarchy

Where Q01.9 sits in the official hierarchy. Each level is the code it is classified under.

Q01 Parent Encephalocele
Q01.9 This code Encephalocele, unspecified

Official Coding Notes

Reproduced verbatim from the FY 2027 ICD-10-CM files. Notes labelled as inherited are declared on a parent code and apply here too.

Includes

Arnold-Chiari syndrome, type III

Inherited from Q01 — Encephalocele

Includes

encephalocystocele

Inherited from Q01 — Encephalocele

Includes

encephalomyelocele

Inherited from Q01 — Encephalocele

Includes

hydroencephalocele

Inherited from Q01 — Encephalocele

Includes

hydromeningocele, cranial

Inherited from Q01 — Encephalocele

Includes

meningocele, cerebral

Inherited from Q01 — Encephalocele

Includes

meningoencephalocele

Inherited from Q01 — Encephalocele

Excludes1

Meckel-Gruber syndrome ( Q61.9 )

Inherited from Q01 — Encephalocele

Version History

How Q01.9 appears in each release imported from the official files, newest first.

FY 2027 Effective October 1, 2026
Current

Encephalocele, unspecified
FY 2026 Effective October 1, 2025
Unchanged

Encephalocele, unspecified

Other codes under Q01

Data Source

Code information on this page is derived from the FY 2027 ICD-10-CM files published by CDC NCHS and CMS.

Release: FY 2027
Effective: October 1, 2026
Source file: icd10cm-code-descriptions-2027.zip

Official ICD-10-CM source files (opens in a new tab)

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