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  6. 2024 ICD-10-CM Code M63.8
Version 2024
Non-Billable Code

2024 ICD-10-CM Diagnosis Code M63.8

Disorders of muscle in diseases classified elsewhere

ICD-10-CM Code:
M63.8
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)

M63.8 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 M63.8 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:

  • 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

  • Use M63.811 for Disorders of muscle in diseases classified elsewhere, right shoulder - BILLABLE CODE

  • Use M63.812 for Disorders of muscle in diseases classified elsewhere, left shoulder - BILLABLE CODE

  • Use M63.819 for Disorders of muscle in diseases classified elsewhere, unspecified shoulder - BILLABLE CODE

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

  • Use M63.821 for Disorders of muscle in diseases classified elsewhere, right upper arm - BILLABLE CODE

  • Use M63.822 for Disorders of muscle in diseases classified elsewhere, left upper arm - BILLABLE CODE

  • Use M63.829 for Disorders of muscle in diseases classified elsewhere, unspecified upper arm - BILLABLE CODE

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

  • Use M63.831 for Disorders of muscle in diseases classified elsewhere, right forearm - BILLABLE CODE

  • Use M63.832 for Disorders of muscle in diseases classified elsewhere, left forearm - BILLABLE CODE

  • Use M63.839 for Disorders of muscle in diseases classified elsewhere, unspecified forearm - BILLABLE CODE

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

  • Use M63.841 for Disorders of muscle in diseases classified elsewhere, right hand - BILLABLE CODE

  • Use M63.842 for Disorders of muscle in diseases classified elsewhere, left hand - BILLABLE CODE

  • Use M63.849 for Disorders of muscle in diseases classified elsewhere, unspecified hand - BILLABLE CODE

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

  • Use M63.851 for Disorders of muscle in diseases classified elsewhere, right thigh - BILLABLE CODE

  • Use M63.852 for Disorders of muscle in diseases classified elsewhere, left thigh - BILLABLE CODE

  • Use M63.859 for Disorders of muscle in diseases classified elsewhere, unspecified thigh - BILLABLE CODE

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

  • Use M63.861 for Disorders of muscle in diseases classified elsewhere, right lower leg - BILLABLE CODE

  • Use M63.862 for Disorders of muscle in diseases classified elsewhere, left lower leg - BILLABLE CODE

  • Use M63.869 for Disorders of muscle in diseases classified elsewhere, unspecified lower leg - BILLABLE CODE

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

  • Use M63.871 for Disorders of muscle in diseases classified elsewhere, right ankle and foot - BILLABLE CODE

  • Use M63.872 for Disorders of muscle in diseases classified elsewhere, left ankle and foot - BILLABLE CODE

  • Use M63.879 for Disorders of muscle in diseases classified elsewhere, unspecified ankle and foot - 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

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.