ICD-10 diagnosis code

G99 Other disorders of nervous system in diseases classified elsewhere

G99 is the ICD-10 code for Other disorders of nervous system in diseases classified elsewhere. It is a three-character category divided into 4 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

Subcodes of G99

G99 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

G99Andra tillstånd i nervsystemet vid sjukdomar som klassificeras på annan plats

DenmarkICD-10-DK

DG99Andre sygdomme i nervesystemet ved sygdomme klassificeret andetsteds

GermanyICD-10-GM

G99Sonstige Krankheiten des Nervensystems bei anderenorts klassifizierten Krankheiten

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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