ICD-10 diagnosis code

G90 Disorders of autonomic nervous system

G90 is the ICD-10 code for Disorders of autonomic nervous system. It is a three-character category divided into 9 subcodes; use the subcode whenever the record supports that level of detail. It belongs to the block G90–G99 (Other disorders of the nervous system) in Chapter VI, Diseases of the nervous system.

Code type: Category (3 characters)
Chapter: VI · G00–G99
Classification: WHO ICD-10, 2019 version

What G90 excludes

Conditions that look similar but belong under another code.

dysfunction of autonomic nervous system due to alcohol G31.2

Subcodes of G90

G90 in national editions

Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.

SwedenICD-10-SE

G90Sjukdomar i autonoma nervsystemet

DenmarkICD-10-DK

DG90Sygdomme i autonome nervesystem

FinlandICD-10-FI

G90Autonomisen hermoston sairaudet

G90.3Usean järjestelmän rappeuma

GermanyICD-10-GM

G90Krankheiten des autonomen Nervensystems

FranceICD-10-FR

G90Affections du système nerveux autonome

NetherlandsICD-10-NL

G90aandoeningen van autonoom zenuwstelsel

United StatesICD-10-CM

Listed through more specific codes:

G90.3Multi-system degeneration of the autonomic nervous system
G90.APostural orthostatic tachycardia syndrome [POTS]
G90.BLMNB1-related autosomal dominant leukodystrophy

Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.

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