All ICD10 Codes

G21.2

Billable
ChapterG00–G99
Ranksubcategory
Official Description

Secondary parkinsonism due to other external agents

Metadata & Insights
  • •Billable/specific code (valid for reimbursement).
  • •Chapter 6: Diseases of the Nervous System (G00-G99).

Instructional Notes

Code First
  • (T51-T65) to identify external agent
General instructions are available for the parent sections:
View CH6 NotesView G21 Notes

Clinical Hierarchy

BillableHas subcodes
CH6Diseases of the nervous system (G00-G99)
G20-G26Extrapyramidal and movement disorders (G20-G26)
G21Secondary parkinsonism
G21.2Secondary parkinsonism due to other external agentsBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to G21.2:

categoryG21
Secondary parkinsonism
View context instructions
chapterCH6
Diseases of the nervous system (G00-G99)
View context instructions

MS-DRG Classification

2026 v43.1

This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:

DRG 056
Degenerative Nervous System Disorders with MCC
DRG 057
Degenerative Nervous System Disorders without MCC

Cross Reference

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