Q00 ICD-10-CM Code: Anencephaly and similar malformations
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Code definition
Official description
Q00Anencephaly and similar malformations
ICD-10-CM diagnosis code · United States clinical modification
Classification
Where Q00 sits
- 1
Chapter 17
Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1)
- 2
Section
Congenital malformations of the nervous system (Q00-Q07)
- 3
Category Q00
Anencephaly and similar malformations
- 4
Code Q00
Anencephaly and similar malformations
More specific choices
Codes under Q00
Q00 is a non-billable category. Choose the child code that best matches the documented diagnosis.
Documentation details
Notes for this code
Inclusion terms
No inclusion terms are listed for Q00.
Code first
No “code first” instruction is listed for Q00.
Use additional code
No “use additional code” instruction is listed for Q00.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for Q00.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for Q00.
Transparency
Source and release
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Review the CDC/NCHS ICD-10-CM sourceCode-specific guidance
Frequently asked questions
What does ICD-10-CM code Q00 mean?
Q00 is the FY 2027 U.S. ICD-10-CM code for “Anencephaly and similar malformations.”
Is Q00 a billable or specific ICD-10-CM code?
No. Q00 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.
Where is Q00 located in ICD-10-CM?
Q00 is listed in Chapter 17, Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1), within Congenital malformations of the nervous system (Q00-Q07) (Q00–Q07), under category Q00, Anencephaly and similar malformations.
What coding notes are listed for Q00?
No inclusion terms are listed for Q00 in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.
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