ICD-10-CM · Chapter 6

G20..C Parkinsonism, unspecified

Billable

← G20 — Parkinson's disease Chapter 6: G00-G99

Includes

Parkinsonism, NOS

Excludes 1 (cannot be coded together)

Parkinson's disease NOS (G20.A1)
Parkinson's disease with dyskinesia (G20.B-)
Parkinson's disease without dyskinesia (G20.A-)
secondary parkinsonism (G21.-)

Last reviewed: September 2026