M62.81 – Muscle weakness (Generalized)

Learn about the ICD-10-CM code M62.81 for generalized muscle weakness through this guide.

By Matt Olivares on Aug 8, 2025.

Fact Checked by Karina Jimenea.

Use Code

M62.81 diagnosis code: Muscle weakness (generalized)

M62.81 is the ICD-10-CM code for generalized muscle weakness, characterized by decreased muscle strength.
It can be experienced in multiple muscle groups across the body.
Generalized muscle weakness can be a symptom of various underlying health conditions, including neurological disorders, muscular disorders, metabolic diseases, and systemic illnesses.
The management approach depends on the underlying cause and may involve medication, physical therapy, lifestyle modifications, or surgical intervention.
As per coding guidelines, please only use this once it has been confirmed that the patient has generalized muscle weakness.

Is M62.81 billable?

Yes, M62.81 is a billable code. It can be used to specify a diagnosis for reimbursement purposes in medical billing.

Clinical information

Generalized muscle weakness can affect individuals of any age, but the risk increases with age and specific health conditions.
It can significantly impact daily activities, limiting mobility and reducing quality of life.
Symptoms can range from mild fatigue and difficulty performing tasks to severe weakness affecting the ability to move.
Diagnosis often involves a comprehensive medical history, physical examination, and diagnostic tests such as electromyography, nerve conduction studies, and blood tests.
Early detection and management of the underlying cause can significantly improve outcomes and prevent complications.
Patient education and support play crucial roles in managing generalized muscle weakness, along with medical interventions.

Synonyms include

Generalized muscle weakness
Generalized weakness of muscles
Age-related weakness (generalized muscle weakness)
Generalized muscle weakness accompanied by stiff man syndrome
Generalized weakness of specific muscle group
Generalized weakness due to a muscle disease
Generalized muscle weakness due to underlying disease
Generalized muscle weakness as part of a patient's symptoms
Reduced muscle function due to generalized weakness
Muscle fatigue
Myasthenia
Muscle debility
Weakness of muscles
Myopathy in diseases classified elsewhere

Popular search terms for M62.81

M62.81 ICD-10 code
ICD-10 M62.81
M62.81 diagnosis code
ICD-10 code for generalized muscle weakness

Other ICD-10 codes commonly used for muscle weakness

M62.830: Muscle spasm of back
M62.838: Other muscle spasm
G72.0: Drug-induced myopathy
G72.1: Alcoholic myopathy
G72.2: Myopathy due to other toxic agents
G72.3: Periodic paralysis
G72.49: Other inflammatory and immune myopathies, not elsewhere classified
M62.50: Muscle wasting and atrophy, not elsewhere classified, unspecified site

Commonly asked questions

Generalized muscle weakness can be caused by various factors, including neurological disorders, muscular disorders, metabolic diseases, systemic illnesses, and certain medications.

The diagnosis of M62.81 involves a comprehensive medical history, physical examination, and diagnostic tests such as electromyography, nerve conduction studies, and blood tests.

Treatment options for generalized muscle weakness depend on the underlying cause and may involve medication, physical therapy, lifestyle modifications, or surgical intervention.

EHR and practice management software

Get started for free

*No credit card required

Start for free

Free

$0/usd

Unlimited clients

Telehealth

1GB of storage

Client portal text

Automated billing and online payments