ICD-10-CM · Chapter 6
G21..0 Malignant neuroleptic syndrome
Excludes 1 (cannot be coded together)
- neuroleptic induced parkinsonism (G21.11)
Use Additional Code
- code for adverse effect, if applicable, to identify drug (T43.3X5, T43.4X5, T43.505, T43.595)
Last reviewed: September 2026