G83.21
G83.21 — Monoplegia of upper limb affecting right dominant side
Billable / specific codeICD-10-CMright
G83.21 is a billable, specific ICD-10-CM code for monoplegia of upper limb affecting right dominant side. It is valid for submission on a claim.
Risk adjustment
G83.21 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 254 Monoplegia, Other Paralytic Syndromes0.321 RAF
Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.
Medicare coverage
G83.21 is named in 30 Medicare coverage policies — 30 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A52992Billing and Coding: Non-Invasive Cerebrovascular Arterial Studies
- A53057Billing and Coding: Home Health Occupational Therapy
- A53058Billing and Coding: Home Health Physical Therapy
- A53064Billing and Coding: Outpatient Occupational Therapy
Related codes at this level
Codes that share G83.2. If G83.21 is not quite right, the correct code is usually one of these.
Questions about G83.21
- Is G83.21 a billable ICD-10-CM code?
- Yes. G83.21 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does G83.21 sit in the tabular list?
- Diseases of the nervous system (G00-G99), in the block Cerebral palsy and other paralytic syndromes (G80-G83).