2018 ICD-10-CM Diagnosis Code G12.2

Motor neuron disease

2016

2017

2018

Non-Billable/Non-Specific Code

G12.2 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
The 2018 edition of ICD-10-CM G12.2 became effective on October 1, 2017.
This is the American ICD-10-CM version of G12.2 - other international versions of ICD-10 G12.2 may differ.

The following code(s) above G12.2 contain annotation back-references

Annotation Back-References

In this context, annotation back-references refer to codes that contain:

that may be applicable to G12.2:

Clinical Information

Diseases characterized by a selective degeneration of the motor neurons of the spinal cord, brainstem, or motor cortex. Clinical subtypes are distinguished by the major site of degeneration. In amyotrophic lateral sclerosis there is involvement of upper, lower, and brainstem motor neurons. In progressive muscular atrophy and related syndromes (see muscular atrophy, spinal) the motor neurons in the spinal cord are primarily affected. With progressive bulbar palsy (bulbar palsy, progressive), the initial degeneration occurs in the brainstem. In primary lateral sclerosis, the cortical neurons are affected in isolation. (Adams et al., Principles of Neurology, 6th ed, p1089)
Disorders of motor neurons which result in atrophy, fasciculation and fibrillations, spasticity, decreased muscle tone, loss of or overactive tendon reflexes, and abnormal extensor reflexes.

Code History

ICD-10-CM Codes Adjacent To G12.2

G11.0 Congenital nonprogressive ataxia

G11.1 Early-onset cerebellar ataxia

G11.2 Late-onset cerebellar ataxia

G11.3 Cerebellar ataxia with defective DNA repair

G11.4 Hereditary spastic paraplegia

G11.8 Other hereditary ataxias

G11.9 Hereditary ataxia, unspecified

G12 Spinal muscular atrophy and related syndromes

G12.0 Infantile spinal muscular atrophy, type I [Werdnig-Hoffman]

G12.1 Other inherited spinal muscular atrophy

G12.2 Motor neuron disease

G12.20 …… unspecified

G12.21 Amyotrophic lateral sclerosis

G12.22 Progressive bulbar palsy

G12.23 Primary lateral sclerosis

G12.24 Familial motor neuron disease

G12.25 Progressive spinal muscle atrophy

G12.29 Other motor neuron disease

G12.8 Other spinal muscular atrophies and related syndromes

G12.9 Spinal muscular atrophy, unspecified

G13 Systemic atrophies primarily affecting central nervous system in diseases classified elsewhere

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.