Parkinson’s Disease

Here are some current terms and definitions used for Parkinson’s disease symptoms and new ICD-10-CM codes accompanying these terms.

Terms and Definitions:

ON TIME- G20.A1, Parkinson’s disease without dyskinesia, without mention of fluctuations OR G20.C (dependent upon documentation). No OFF episodes or dyskinesia. Good movement control.

OFF TIME- G20.A1, Parkinson’s disease without dyskinesia, without mention of fluctuations OR G20.C (dependent upon documentation). Levodopa may not be working as expected to control Parkinson’s symptoms. Slowed movement. Tremor (rhythmic, back-and-forth movement), rigidity and balance issues.

DYSKINESIA- G20.B1, Parkinson’s disease without dyskinesia, without mention of fluctuations. Unwanted movements caused by too much Levodopa and/or other Parkinson’s medications. Rapid jerking or muscle spasms. Rhythmic, dance-like movements (rocking or bobbing).

FLUCTUATIONS- G20.A2, Parkinson’s disease without dyskinesia, with fluctuations. Variations of ‘ON’ and ‘OFF’ times throughout the day.

DYSKINESIA and FLUCTUATIONS: G20.B2, Parkinson’s disease with dyskinesia, with fluctuations. Mild dyskinesia and wearing-off, which indicates the patient is experiencing OFF episodes.

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