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ICD-10-CM 2027 diagnosis code

QA0.0Neurodevelopmental disorders related to pathogenic variants in specific genes

Not billable — use a more specific code

QA0.0 is a header code, so it can't be reported by itself. Choose one of the 1 more specific codes beneath it.Short description: Neurodev disord related to patho variants in specific genes

Code last changed in FY2026 (effective October 1, 2025). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About QA0.0

QA0.0 is the ICD-10-CM diagnosis code for neurodevelopmental disorders related to pathogenic variants in specific genes. It belongs to category QA0 (neurodevelopmental disorders related to specific genetic pathogenic variants), block QA0-QA1 (genetic disorders, not elsewhere classified) 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 1 subcodes must be used instead.

Within QA0 (neurodevelopmental disorders related to specific genetic pathogenic variants), QA0.0 is specifically for neurodevelopmental disorders related to pathogenic variants in specific genes. Related codes cover other neurodevelopmental disorders related to pathogenic variants in other specific genes (QA0.8).

To report this condition, pick the subcode that matches the documentation: QA0.01 (genes).

It was added in FY2026, effective October 1, 2025.

Specific codes under QA0.0

Notes that apply from higher levels

Instructions written at a parent level also apply to QA0.0.

› From QA0 Neurodevelopmental disorders related to specific genetic pathogenic variants
Code also
  • , if applicable, any associated conditions, such as:
  • attention-deficit hyperactivity disorders (F90.-)
  • autism spectrum disorder (F84.0)
  • developmental and epileptic encephalopathy (G93.45)
  • epilepsy, by specific type (G40.-)
  • intellectual disabilities (F70-F79)
  • pervasive developmental disorders (F84.-)

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

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
  • FY2026 (effective 10/1/2025): Added
  • No changes since FY2026.

Common questions about QA0.0

Is QA0.0 billable?

No. QA0.0 is a header code. Report one of its more specific subcodes instead.