G83.21

Billable

Monoplegia of upper limb affecting right dominant side

HCC Category Mapping

V28HCC 254 — Monoplegia, Other Paralytic Syndromes

0.000

V24HCC 104 — Monoplegia, Other Paralytic Syndromes

0.304

ESRDHCC 104 — Monoplegia, Other Paralytic Syndromes

0.000

What This Code Means

Weakness or paralysis affecting only the right arm in a person whose right side is their dominant side.

Coding Tips

•Verify that only the upper limb is affected; if the lower limb is also involved, use a different code
•Document the functional impact on the dominant arm, as this may affect rehabilitation and treatment planning

Clinical Significance

Monoplegia of the upper limb affecting the right dominant side is one of the most functionally devastating monoplegia presentations, as most people rely heavily on their dominant hand for writing, eating, grooming, and work tasks. Loss of dominant arm function requires extensive occupational therapy to develop compensatory strategies with the nondominant hand. This code captures maximum specificity for risk adjustment and clinical documentation.

Documentation Requirements

✓Documentation of monoplegia isolated to the right upper extremity
✓Right-hand dominance confirmed
✓Underlying etiology documented and coded separately
✓Motor strength examination findings
✓Functional impact on handwriting, self-care, and occupational tasks
✓Occupational therapy and rehabilitation plan
✓Adaptive equipment needs

Commonly Confused Codes

G83.23 Monoplegia of upper limb, right nondominant — right arm in a left-handed person G83.20 Monoplegia of upper limb, unspecified — when laterality is unknown G81.01 Flaccid hemiplegia, right dominant — includes lower extremity involvement G56.00 Carpal tunnel syndrome — peripheral nerve problem, not monoplegia S46.001 Strain of muscle/tendon of rotator cuff — musculoskeletal, not neurological

Code Hierarchy

└G83Other paralytic syndromes └G83.2Monoplegia of upper limb └G83.21Monoplegia of upper limb affecting right dominant side

└G83.21Monoplegia of upper limb affecting right dominant side