G20.A
G20.A — Parkinson's disease without dyskinesia
Non-billable headerICD-10-CM
G20.A is a non-billable header ICD-10-CM code for parkinson's disease without dyskinesia. It cannot be billed on its own: choose one of the more specific child codes below.
Other codes that can never be billed with G20.A
These codes carry an Excludes1 note pointing at G20.A. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading G20.A alone.
- G20.CParkinsonism, unspecified
Risk adjustment
G20.A does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Code to one of these instead G20.A
2 child codes. Green means billable.
Related codes at this level
Codes that share G20. If G20.A is not quite right, the correct code is usually one of these.
Questions about G20.A
- Is G20.A a billable ICD-10-CM code?
- No. G20.A is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does G20.A sit in the tabular list?
- Diseases of the nervous system (G00-G99), in the block Extrapyramidal and movement disorders (G20-G26).