M62.89 - Other specified disorders of muscle

Approximate Synonyms

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

• Abnormally decreased muscle contraction
• Acquired hypotonia
• Asymmetric muscle tone
• Central muscle fatigue
• Débré-Sémélaigne's syndrome
• Degenerative disorder of muscle
• Deposition in skeletal muscle
• Enlargement of skeletal muscle
• Finding of size of skeletal muscle
• Finding of size of skeletal muscle
• Flaccidity of muscle
• Flaccidity of muscle of lower limb
• Flaccidity of muscle of upper limb
• Fluctuating muscle tone
• Generalized myokymia
• Global developmental delay, visual anomalies, progressive cerebellar atrophy, truncal hypotonia syndrome
• Hemihypertrophy of muscle
• Hemorrhage of muscle
• Hereditary cerebellar atrophy
• Hernia of muscle through fascia of lower leg
• Herniation of lumbar muscles
• High frequency muscle fatigue
• Hypertrophic cardiomyopathy with hypotonia and lactic acidosis syndrome
• Hypertrophy of left masseter muscle
• Hypertrophy of masseter muscle
• Hypertrophy of muscles of mastication
• Hypertrophy of right masseter muscle
• Inappropriate firing of muscle
• Increased muscle tone
• Increased muscle tone - left side more than right side
• Increased muscle tone - right side more than left side
• Lesion of skeletal muscle structure
• Lesion of skeletal muscle structure
• Low frequency muscle fatigue
• Muscle asynchronous firing potential
• Muscle fatigue
• Muscle fibrillation
• Muscle hypertrophy
• Muscle irritability
• Muscle power unequal
• Muscular steatosis
• Myofibrosis
• Myokymia, hyperhidrosis, impaired muscle relaxation syndrome
• Myomalacia
• Myotonia
• Myotonia acquisita
• Nodule in muscle
• Peripheral muscle fatigue
• Protective splinting of masticatory muscles
• Quadratus lumborum syndrome
• Radioulnar synostosis
• Radioulnar synostosis with developmental delay and hypotonia syndrome
• Reduction of bulk of muscle
• Reinnervation
• Skeletal muscle power problem
• Skeletal muscle problem
• Spontaneous EMG activity
• Straining
• Structural velopharyngeal impairment
• Subgaleal hemorrhage
• X-linked intellectual disability and hypotonia with facial dysmorphism and aggressive behavior syndrome

Clinical Information

• Myotonia-. prolonged failure of muscle relaxation after contraction. this may occur after voluntary contractions, muscle percussion, or electrical stimulation of the muscle. myotonia is a characteristic feature of myotonic disorders.
• Myotonia Congenita-. inherited myotonic disorders with early childhood onset myotonia. muscular hypertrophy is common and myotonia may impair ambulation and other movements. it is classified as thomsen (autosomal dominant) or becker (autosomal recessive) generalized myotonia mainly based on the inheritance pattern. becker type is also clinically more severe. an autosomal dominant variant with milder symptoms and later onset is known as myotonia levior. mutations in the voltage-dependent skeletal muscle chloride channel are associated with the disorders.
• Myotonic Disorders-. diseases characterized by myotonia, which may be inherited or acquired. myotonia may be restricted to certain muscles (e.g., intrinsic hand muscles) or occur as a generalized condition.
• Myotonic Dystrophy-. neuromuscular disorder characterized by progressive muscular atrophy; myotonia, and various multisystem atrophies. mild intellectual disability may also occur. abnormal trinucleotide repeat expansion in the 3' untranslated regions of dmpk protein gene is associated with myotonic dystrophy 1. dna repeat expansion of zinc finger protein-9 gene intron is associated with myotonic dystrophy 2.
• Osteochondrodysplasias-. abnormal development of cartilage and bone.
• Muscle Fatigue-. a state arrived at through prolonged and strong contraction of a muscle. studies in athletes during prolonged submaximal exercise have shown that muscle fatigue increases in almost direct proportion to the rate of muscle glycogen depletion. muscle fatigue in short-term maximal exercise is associated with oxygen lack and an increased level of blood and muscle lactic acid, and an accompanying increase in hydrogen-ion concentration in the exercised muscle.
• Subgaleal Hemorrhage-. bleeding between the scalp and the periosteum.
• Subgaleal Hemorrhage Related to Birth|Epicranial Subaponeurotic Hemorrhage Related to Birth|Epicranial Subaponeurotic Hemorrhage Related to Birth-. bleeding in the potential space between the skull periosteum and the scalp galea aponeurosis of a newborn infant due to shearing forces on the tentorium and deep venous system during labor and delivery.

Diagnostic Related Groups - MS-DRG Mapping

The is diagnosis code is grouped in the following groups for version MS-DRG V40.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC). applicable from 10/01/2022 through 09/30/2023.

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Patient Education

Muscle Disorders

Your muscles help you move and help your body work. Different types of muscles have different jobs. There are many problems that can affect muscles. Muscle disorders can cause weakness, pain or even paralysis.

Causes of muscle disorders include:

• Injury or overuse, such as sprains or strains, cramps or tendinitis
• A genetic disorder, such as muscular dystrophy
• Some cancers
• Inflammation, such as myositis
• Diseases of nerves that affect muscles
• Infections
• Certain medicines

Sometimes the cause of muscle disorders is unknown.

Code History

• FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
• FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
• FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
• FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
• FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
• FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
• FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
• FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016 (First year ICD-10-CM implemented into the HIPAA code set)