Index to Diseases and Injuries

Disease, diseased › Parkinson's

Index code:G20.A1

with dyskinesia
with
fluctuations G20.B2
OFF episodes G20.B2
without mention of
fluctuations G20.B1
OFF episodes G20.B1
without dyskinesia
with
fluctuations G20.A2
OFF episodes G20.A2
without mention of
fluctuations G20.A1
OFF episodes G20.A1

Use the index to find a code, then confirm it in the Tabular List before assigning it. A code ending in a dash is incomplete, and a code in [brackets] is a manifestation code reported after the underlying condition. Search the whole index.

Frequently asked questions

What is the ICD-10-CM code for Disease, diseased › Parkinson's?

The ICD-10-CM Alphabetic Index directs "Disease, diseased › Parkinson's" to G20.A1. Subterms below it may lead to a more specific code. Always confirm the code in the Tabular List before assigning it.

ICD-10-CM Index to Diseases and Injuries maintained by CDC/NCHS (public domain), from the CMS FY2027 release.