ICD-10-CM Code G83.10

Monoplegia of lower limb affecting unspecified side

Version 2021 Billable Code

Valid for Submission

G83.10 is a billable code used to specify a medical diagnosis of monoplegia of lower limb affecting unspecified side. The code is valid for the fiscal year 2021 for the submission of HIPAA-covered transactions. The ICD-10-CM code G83.10 might also be used to specify conditions or terms like flaccid monoplegia of lower limb, flaccid paralysis, monoparesis, monoparesis - leg, monoplegia of lower limb, monoplegia of lower limb affecting dominant side, etc

Short Description:Monoplegia of lower limb affecting unspecified side
Long Description:Monoplegia of lower limb affecting unspecified side


The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Flaccid monoplegia of lower limb
  • Flaccid paralysis
  • Monoparesis
  • Monoparesis - leg
  • Monoplegia of lower limb
  • Monoplegia of lower limb affecting dominant side
  • Monoplegia of lower limb affecting non-dominant side
  • Paresis of left lower limb
  • Paresis of lower extremity
  • Paresis of right lower limb
  • Spastic monoplegia of lower limb
  • Weakness of left leg
  • Weakness of right leg

Convert G83.10 to ICD-9

  • 344.30 - Monplga lwr lmb unsp sde (Approximate Flag)

Code Classification

  • Diseases of the nervous system (G00–G99)
    • Cerebral palsy and other paralytic syndromes (G80-G83)
      • Other paralytic syndromes (G83)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021

Information for Patients


Also called: Hemiplegia, Palsy, Paraplegia, Quadriplegia

Paralysis is the loss of muscle function in part of your body. It happens when something goes wrong with the way messages pass between your brain and muscles. Paralysis can be complete or partial. It can occur on one or both sides of your body. It can also occur in just one area, or it can be widespread. Paralysis of the lower half of your body, including both legs, is called paraplegia. Paralysis of the arms and legs is quadriplegia.

Most paralysis is due to strokes or injuries such as spinal cord injury or a broken neck. Other causes of paralysis include

  • Nerve diseases such as amyotrophic lateral sclerosis
  • Autoimmune diseases such as Guillain-Barre syndrome
  • Bell's palsy, which affects muscles in the face

Polio used to be a cause of paralysis, but polio no longer occurs in the U.S.

  • Hyperkalemic periodic paralysis (Medical Encyclopedia)
  • Hypokalemic periodic paralysis (Medical Encyclopedia)
  • Muscle function loss (Medical Encyclopedia)

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