ICD-10 Code G12.24 – Familial motor neuron disease (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G12.24 – Familial motor neuron disease
What it is
G12.24 identifies familial motor neuron disease, an inherited disorder that affects motor neurons and leads to progressive muscle weakness. Use it when documentation specifically states a familial form of motor neuron disease.
Clinical signs
Typical findings include progressive limb weakness, muscle wasting, and signs of upper or lower motor neuron involvement. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents familial motor neuron disease, hereditary motor neuron disease, or a clearly inherited motor neuron disorder. It may also fit when the record links the condition to a family history and confirms the diagnosis. Check documentation if the note only says motor neuron disease without a familial basis.
Do not use for
Do not use it for amyotrophic lateral sclerosis unless the record specifically documents the familial motor neuron disease diagnosis. Avoid using it for nonspecific weakness, neuropathy, or undiagnosed neuromuscular complaints.
Coding tip
Code the familial diagnosis only when the inherited nature is clearly documented; otherwise, query the provider.