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  6. 2024 ICD-10-CM Code M63
Version 2024
Non-Billable Code

2024 ICD-10-CM Diagnosis Code M63

Disorders of muscle in diseases classified elsewhere

ICD-10-CM Code:
M63
ICD-10 Code for:
Disorders of muscle in diseases classified elsewhere
Is Billable?
Not Valid for Submission
Code Navigator:

Code Classification

  • Diseases of the musculoskeletal system and connective tissue
    (M00–M99)
    • Disorders of muscles
      (M60-M63)
      • Disorders of muscle in diseases classified elsewhere
        (M63)

M63 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of disorders of muscle in diseases classified elsewhere. The code is not specific and is NOT valid for the year 2024 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding Applicable to Disorders of muscle in diseases classified elsewhere

Non-specific codes like M63 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for disorders of muscle in diseases classified elsewhere:

  • M63.8 for Disorders of muscle in diseases classified elsewhere - NON-BILLABLE CODE

  • Use M63.80 for Disorders of muscle in diseases classified elsewhere, unspecified site - BILLABLE CODE

  • M63.81 for Disorders of muscle in diseases classified elsewhere, shoulder - NON-BILLABLE CODE

  • M63.82 for Disorders of muscle in diseases classified elsewhere, upper arm - NON-BILLABLE CODE

  • M63.83 for Disorders of muscle in diseases classified elsewhere, forearm - NON-BILLABLE CODE

  • M63.84 for Disorders of muscle in diseases classified elsewhere, hand - NON-BILLABLE CODE

  • M63.85 for Disorders of muscle in diseases classified elsewhere, thigh - NON-BILLABLE CODE

  • M63.86 for Disorders of muscle in diseases classified elsewhere, lower leg - NON-BILLABLE CODE

  • M63.87 for Disorders of muscle in diseases classified elsewhere, ankle and foot - NON-BILLABLE CODE

  • Use M63.88 for Disorders of muscle in diseases classified elsewhere, other site - BILLABLE CODE

  • Use M63.89 for Disorders of muscle in diseases classified elsewhere, multiple sites - BILLABLE CODE

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.


Code First

Code First
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.

Type 1 Excludes

Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • myopathy in cysticercosis B69.81
  • myopathy in endocrine diseases G73.7
  • myopathy in metabolic diseases G73.7
  • myopathy in sarcoidosis D86.87
  • myopathy in secondary syphilis A51.49
  • myopathy in syphilis late A52.78
  • myopathy in toxoplasmosis B58.82
  • myopathy in tuberculosis A18.09

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.