ICD-10-CM Diagnosis Code (2025)
Official Description for G21.0
Malignant neuroleptic syndrome
Coding Notes & Guidelines for G21.0
neuroleptic induced parkinsonism (G21.11)
code for adverse effect, if applicable, to identify drug (T43.3X5, T43.4X5, T43.505, T43.595)
Parent Code (Less Specific):
About ICD-10-CM Code G21.0 (Malignant neuroleptic syndrome)
ICD-10-CM code G21.0 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM G21.0 became effective on October 1, 2024.
This page provides detailed information about G21.0 - Malignant neuroleptic syndrome. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Malignant neuroleptic syndrome.