HCC 199CMS-HCC V28
Parkinson and Other Degenerative Disease of Basal Ganglia
ICD-10-CM codes mapped to HCC 199 (16)
G20.A1Parkinson's dis w/o dyskinesia, w/o mention of fluctuationsG20.A2Parkinson's disease without dyskinesia, with fluctuationsG20.B1Parkinson's dis with dyskinesia, w/o mention of fluctuationsG20.B2Parkinson's disease with dyskinesia, with fluctuationsG20.CParkinsonism, unspecifiedG21.3Postencephalitic parkinsonismG21.4Vascular parkinsonismG21.8Other secondary parkinsonismG21.9Secondary parkinsonism, unspecifiedG23.0Hallervorden-Spatz diseaseG23.1Progressive supranuclear ophthalmoplegiaG23.2Striatonigral degenerationG23.3Hypomyelination with atrophy of basal ganglia and cerebellumG23.8Other specified degenerative diseases of basal gangliaG23.9Degenerative disease of basal ganglia, unspecifiedG90.3Multi-system degeneration of the autonomic nervous system
Frequently asked questions
What is HCC 199?
HCC 199 is the CMS-HCC V28 risk adjustment category for Parkinson and Other Degenerative Disease of Basal Ganglia.
How many ICD-10-CM codes map to HCC 199?
16 ICD-10-CM codes map to HCC 199 under the CMS-HCC V28 model.
Risk adjustment data from CMS (public domain). This page shows the HCC category label and its ICD-10-to-HCC crosswalk only — no per-segment coefficients or RAF scores.