2020 ICD-10-CM Codes for Disorders of muscle in diseases classified elsewhere (M63)

Instructional Notations

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
    • ICD-10 Index

      • Diseases of the musculoskeletal system and connective tissue (M00–M99)

        • Disorders of muscles (M60-M63)

            • Disorders of muscle in diseases classified elsewhere (M63)
            • M63 - Disorders of muscle in diseases classified elsewhere NON-BILLABLE CODE
            • M63.8 - Disorders of muscle in diseases classified elsewhere NON-BILLABLE CODE
            • M63.80 - Disorders of muscle in diseases classd elswhr, unsp site BILLABLE CODE
            • M63.81 - Disorders of muscle in diseases classd elswhr, shoulder NON-BILLABLE CODE
            • M63.811 - Disorders of muscle in diseases classd elswhr, r shoulder BILLABLE CODE
            • M63.812 - Disorders of muscle in diseases classd elswhr, left shoulder BILLABLE CODE
            • M63.819 - Disorders of muscle in diseases classd elswhr, unsp shoulder BILLABLE CODE
            • M63.82 - Disorders of muscle in diseases classd elswhr, upper arm NON-BILLABLE CODE
            • M63.821 - Disorders of muscle in diseases classd elswhr, r up arm BILLABLE CODE
            • M63.822 - Disorders of muscle in diseases classd elswhr, l up arm BILLABLE CODE
            • M63.829 - Disord of muscle in diseases classd elswhr, unsp upper arm BILLABLE CODE
            • M63.83 - Disorders of muscle in diseases classd elswhr, forearm NON-BILLABLE CODE
            • M63.831 - Disorders of muscle in diseases classd elswhr, right forearm BILLABLE CODE
            • M63.832 - Disorders of muscle in diseases classd elswhr, left forearm BILLABLE CODE
            • M63.839 - Disorders of muscle in diseases classd elswhr, unsp forearm BILLABLE CODE
            • M63.84 - Disorders of muscle in diseases classified elsewhere, hand NON-BILLABLE CODE
            • M63.841 - Disorders of muscle in diseases classd elswhr, right hand BILLABLE CODE
            • M63.842 - Disorders of muscle in diseases classd elswhr, left hand BILLABLE CODE
            • M63.849 - Disorders of muscle in diseases classd elswhr, unsp hand BILLABLE CODE
            • M63.85 - Disorders of muscle in diseases classified elsewhere, thigh NON-BILLABLE CODE
            • M63.851 - Disorders of muscle in diseases classd elswhr, right thigh BILLABLE CODE
            • M63.852 - Disorders of muscle in diseases classd elswhr, left thigh BILLABLE CODE
            • M63.859 - Disorders of muscle in diseases classd elswhr, unsp thigh BILLABLE CODE
            • M63.86 - Disorders of muscle in diseases classd elswhr, lower leg NON-BILLABLE CODE
            • M63.861 - Disorders of muscle in diseases classd elswhr, r low leg BILLABLE CODE
            • M63.862 - Disorders of muscle in diseases classd elswhr, l low leg BILLABLE CODE
            • M63.869 - Disord of muscle in diseases classd elswhr, unsp lower leg BILLABLE CODE
            • M63.87 - Disorders of muscle in diseases classd elswhr, ank/ft NON-BILLABLE CODE
            • M63.871 - Disorders of muscle in diseases classd elswhr, right ank/ft BILLABLE CODE
            • M63.872 - Disorders of muscle in diseases classd elswhr, left ank/ft BILLABLE CODE
            • M63.879 - Disorders of muscle in diseases classd elswhr, unsp ank/ft BILLABLE CODE
            • M63.88 - Disorders of muscle in diseases classd elswhr, oth site BILLABLE CODE
            • M63.89 - Disord of muscle in diseases classd elswhr, multiple sites BILLABLE CODE