ICD-10-CM G21.3: Postencephalitic parkinsonism

Parent Code (Less Specific):

About ICD-10-CM Code G21.3 (Postencephalitic parkinsonism)

ICD-10-CM code G21.3 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 G21.3 became effective on October 1, 2024.

This page provides detailed information about G21.3 - Postencephalitic parkinsonism. 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 Postencephalitic parkinsonism.