2025 ICD-10-CM Diagnosis Code M62.81

Approximate Synonyms

The following list of clinical terms are approximate synonyms, alternative descriptions, or common phrases that might be used by patients, healthcare providers, or medical coders to describe the same condition. These synonyms and related diagnosis terms are often used when searching for an ICD-10 code, especially when the exact medical terminology is unclear. Whether you're looking for lay terms, similar diagnosis names, or common language alternatives, this list can help guide you to the correct ICD-10 classification.

Clinical Classification

Clinical Classifications group individual ICD-10-CM diagnosis codes into broader, clinically meaningful categories. These categories help simplify complex data by organizing related conditions under common clinical themes.

They are especially useful for data analysis, reporting, and clinical decision-making. Even when diagnosis codes differ, similar conditions can be grouped together based on their clinical relevance. Each category is assigned a unique CCSR code that represents a specific clinical concept, often tied to a body system or medical specialty.

Clinical Information

• Muscle Weakness

  a vague complaint of debility, fatigue, or exhaustion attributable to weakness of various muscles. the weakness can be characterized as subacute or chronic, often progressive, and is a manifestation of many muscle and neuromuscular diseases. (from wyngaarden et al., cecil textbook of medicine, 19th ed, p2251)

• Dropped Head Syndrome

  condition characterized by sagging of the head due to severe neck muscles weakness in the back of the neck. it may result in severe cervical kyphosis called chin-on-chest deformity. dropped head syndrome is most often associated with other diseases, e.g., parkinson's disease; strokes; head and neck cancer; and ankylosing spondylitis.

• Asthenia

  clinical sign or symptom manifested as debility, or lack or loss of strength and energy.

• Neurocirculatory Asthenia

  a clinical syndrome characterized by palpitation, shortness of breath, labored breathing, subjective complaints of effort and discomfort, all following slight physical exertion. other symptoms may be dizziness, tremulousness, sweating, and insomnia. neurocirculatory asthenia is most typically seen as a form of anxiety disorder.

• Eye Muscle Weakness

  a reduction in the strength of the eye muscles.

• Facial Muscle Weakness, CTCAE|Facial Muscle Weakness|Facial muscle weakness

  a disorder characterized by a reduction in the strength of the facial muscles.

• Facial Muscle Weakness|Facial muscle weakness

  a reduction in the strength of the facial muscles.

• Generalized Muscle Weakness, CTCAE|Generalized Muscle Weakness|Generalized muscle weakness

  a disorder characterized by a reduction in the strength of muscles in multiple anatomic sites.

• Generalized Muscle Weakness|Generalized muscle weakness

  a reduction in the strength of muscles in multiple anatomic sites.

• Grade 1 Facial Muscle Weakness, CTCAE|Grade 1 Facial muscle weakness

  asymptomatic; clinical or diagnostic observations only; intervention not indicated

• Grade 1 Generalized Muscle Weakness, CTCAE|Grade 1 Generalized muscle weakness

  symptomatic; perceived by patient but not evident on physical exam

• Grade 1 Muscle Weakness Left-Sided, CTCAE|Grade 1 Muscle weakness left-sided

  symptomatic; perceived by patient but not evident on physical exam

• Grade 1 Muscle Weakness Lower Limb, CTCAE|Grade 1 Muscle weakness lower limb

  symptomatic; perceived by patient but not evident on physical exam

• Grade 1 Muscle Weakness Right-Sided, CTCAE|Grade 1 Muscle weakness right-sided

  symptomatic; perceived by patient but not evident on physical exam

• Grade 1 Muscle Weakness Trunk, CTCAE|Grade 1 Muscle weakness trunk

  symptomatic; perceived by patient but not evident on physical exam

• Grade 1 Muscle Weakness Upper Limb, CTCAE|Grade 1 Muscle weakness upper limb

  symptomatic; perceived by patient but not evident on physical exam

• Grade 1 Pelvic Floor Muscle Weakness, CTCAE|Grade 1 Pelvic floor muscle weakness

  asymptomatic; clinical or diagnostic observations only; intervention not indicated

• Grade 2 Facial Muscle Weakness, CTCAE|Grade 2 Facial muscle weakness

  moderate symptoms; limiting instrumental adl

• Grade 2 Generalized Muscle Weakness, CTCAE|Grade 2 Generalized muscle weakness

  symptomatic; evident on physical exam; limiting instrumental adl

• Grade 2 Muscle Weakness Left-Sided, CTCAE|Grade 2 Muscle weakness left-sided

  symptomatic; evident on physical exam; limiting instrumental adl

• Grade 2 Muscle Weakness Lower Limb, CTCAE|Grade 2 Muscle weakness lower limb

  symptomatic; evident on physical exam; limiting instrumental adl

• Grade 2 Muscle Weakness Right-Sided, CTCAE|Grade 2 Muscle weakness right-sided

  symptomatic; evident on physical exam; limiting instrumental adl

• Grade 2 Muscle Weakness Trunk, CTCAE|Grade 2 Muscle weakness trunk

  symptomatic; evident on physical exam; limiting instrumental adl

• Grade 2 Muscle Weakness Upper Limb, CTCAE|Grade 2 Muscle weakness upper limb

  symptomatic; evident on physical exam; limiting instrumental adl

• Grade 2 Pelvic Floor Muscle Weakness, CTCAE|Grade 2 Pelvic floor muscle weakness

  symptomatic, not interfering with bladder, bowel, or vaginal function; limiting instrumental adl

• Grade 3 Facial Muscle Weakness, CTCAE|Grade 3 Facial muscle weakness

  severe symptoms; limiting self care adl

• Grade 3 Generalized Muscle Weakness, CTCAE|Grade 3 Generalized muscle weakness

  limiting self care adl

• Grade 3 Muscle Weakness Left-Sided, CTCAE|Grade 3 Muscle weakness left-sided

  limiting self care adl

• Grade 3 Muscle Weakness Lower Limb, CTCAE|Grade 3 Muscle weakness lower limb

  limiting self care adl

• Grade 3 Muscle Weakness Right-Sided, CTCAE|Grade 3 Muscle weakness right-sided

  limiting self care adl

• Grade 3 Muscle Weakness Trunk, CTCAE|Grade 3 Muscle weakness trunk

  limiting self care adl

• Grade 3 Muscle Weakness Upper Limb, CTCAE|Grade 3 Muscle weakness upper limb

  limiting self care adl

• Grade 3 Pelvic Floor Muscle Weakness, CTCAE|Grade 3 Pelvic floor muscle weakness

  severe symptoms; limiting self care adl

• How Often Experienced Difficulty Doing Everyday Activities Because of Abdominal Muscle Weakness|Difficulty doing everyday activities because of abdominal muscle weakness (e.g. making your bed)

  a question about how often an individual has or had experienced difficulty doing everyday activities because of abdominal muscle weakness (e.g.making their bed).

• How Often Experienced Difficulty Sitting up Because Abdominal Muscle Weakness|Difficulty sitting up because of abdominal muscle weakness (e.g. getting out of bed)

  a question about how often an individual has or had experienced difficulty sitting up because of abdominal muscle weakness (e.g.getting out of bed).

• Muscle Weakness

  a reduction in the strength of one or more muscles.

• Muscle Weakness Left-Sided, CTCAE|Muscle Weakness Left-Sided|Muscle weakness left-sided

  a disorder characterized by a reduction in the strength of the muscles on the left side of the body.

• Muscle Weakness Left-Sided|Muscle weakness left-sided

  a reduction in the strength of the muscles in the left side of the body.

• Muscle Weakness Lower Limb, CTCAE|Muscle Weakness Lower Limb|Muscle weakness lower limb

  a disorder characterized by a reduction in the strength of the lower limb muscles.

• Muscle Weakness Lower Limb|Muscle weakness lower limb

  a reduction in the strength of the lower limb muscles.

• Muscle Weakness Right-Sided, CTCAE|Muscle Weakness Right-Sided|Muscle weakness right-sided

  a disorder characterized by a reduction in the strength of the muscles on the right side of the body.

• Muscle Weakness Right-Sided|Muscle weakness right-sided

  a reduction in the strength of the muscles in the right side of the body.

• Muscle Weakness Trunk, CTCAE|Muscle Weakness Trunk|Muscle weakness trunk

  a disorder characterized by a reduction in the strength of the trunk muscles.

• Muscle Weakness Trunk|Muscle weakness trunk

  a reduction in the strength of the trunk muscles.

• Muscle Weakness Upper Limb, CTCAE|Muscle Weakness Upper Limb|Muscle weakness upper limb

  a disorder characterized by a reduction in the strength of the upper limb muscles.

• Muscle Weakness Upper Limb|Muscle weakness upper limb

  a reduction in the strength of the upper limb muscles.

• Muscle Weakness/Atrophy

  a reduction in the strength and/or mass of one or more muscles.

• Pelvic Floor Muscle Weakness, CTCAE|Pelvic Floor Muscle Weakness|Pelvic floor muscle weakness

  a disorder characterized by a reduction in the strength of the muscles of the pelvic floor.

• Pelvic Floor Muscle Weakness|Pelvic floor muscle weakness

  a reduction in the strength of the muscles of the pelvic floor.

• Early-Onset Progressive Encephalopathy with Brain Atrophy and Thin Corpus Callosum|Early-Onset Progressive Diffuse Brain Atrophy-Microcephaly-Muscle Weakness-Optic Atrophy Syndrome|PEBAT

  an autosomal recessive condition caused by mutation(s) in the tbcd gene, encoding tubulin-specific chaperone d. it is characterized by encephalopathy, cerebellar and cerebral atrophy, and a thin corpus callosum.

• MT-ATP6 wt Allele|ATP Synthase 6 Gene|ATP6|ATPASE-6|ATPase-6|ATPase6|Complex V, ATP Synthase, Subunit ATPase6 Gene|MTATP6|Mitochondrially Encoded ATP Synthase Gene|Mitochondrially Encoded ATP Synthase Membrane Subunit 6 wt Allele|Mitochondrially Encoded ATP Synthase Membrane Subunit A Gene|Spicular Retinitis Pigmentosa with Dementia, Seizures, Ataxia, Proximal Muscle Weakness and Sensory Deficit Gene|Su6m

  human mt-atp6 wild-type allele is located within the circular mitochondrial (mt) chromosome and is approximately 681 bases in length. this allele, which encodes atp synthase subunit a protein, plays a role in proton-transport and atp synthesis. mutation of the gene is associated with neuropathy, ataxia, and retinitis pigmentosa (narp); leber hereditary optic neuropathy (lhon); leigh syndrome (ls); mitochondrial infantile bilateral striatal necrosis (mibsn); myopathy, lactic acidosis, and sideroblastic anemia 3 (mlasa3); adult-onset ataxia and polyneuropathy (apao); infantile hypertrophic cardiomyopathy (cmhi); and mitochondrial complex v (atp synthase) deficiency mitochondrial type 1 (mc5dm1).

• Muscle Weakness, Ped-PRO-CTCAE|Muscle weakness|Ped-PRO-CTCAE, Muscle Weakness

  weakness of muscles as recorded on the ped-pro-ctcae questionnaire.

MS-DRG Mapping for ICD-10-CM Code M62.81

Diagnosis-Related Groups (DRGs) are used to classify hospital cases for billing and healthcare management. They help standardize how hospitals and other providers are reimbursed for inpatient care. Patients are grouped based on their principal diagnosis into broader categories called Major Diagnostic Categories (MDCs).

Once assigned to a DRG, the hospital receives a set payment for the patient’s care, regardless of the actual services provided. This fixed rate is intended to cover the typical cost of treating patients within that group. The payment amount depends on the DRG's relative weight, which reflects the expected complexity and cost of care based on the severity of the patient’s condition.

Diagnostic related groups encourage healthcare providers to focus on quality and efficiency in patient care while managing costs effectively. The diagnosis code is present in the following groups for version MS-DRG V42.0 applicable from 10/01/2024 through 09/30/2025.

Convert M62.81 to ICD-9-CM

Below are the ICD-9 codes that most closely match this ICD-10 code, based on the General Equivalence Mappings (GEMs). This ICD-10 to ICD-9 crosswalk tool is helpful for coders who need to reference legacy diagnosis codes for audits, historical claims, or approximate code comparisons.

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.

[Learn More in MedlinePlus]

Code History

• FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
• 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. This was the first year ICD-10-CM was implemented into the HIPAA code set.