Myositis (M60)

Browse all the diagnosis codes used for myositis (m60). For easy navigation, the diagnosis codes are sorted in alphabetical order and grouped by sections. Each section is clearly marked with its description, and the corresponding three-digit code range. This format makes it simple to browse diagnosis codes in this chapter or section and find what you're looking for. We've also added green checkmark icons to label billable codes, and red warning icons for non-billable ones. This makes it easy to identify which codes can be billed.

Clinical Information

Dermatomyositis - A subacute or chronic inflammatory disease of muscle and skin, marked by proximal muscle weakness and a characteristic skin rash. The illness occurs with approximately equal frequency in children and adults. The skin lesions usually take the form of a purplish rash (or less often an exfoliative dermatitis) involving the nose, cheeks, forehead, upper trunk, and arms. The disease is associated with a complement mediated intramuscular microangiopathy, leading to loss of capillaries, muscle ischemia, muscle-fiber necrosis, and perifascicular atrophy. The childhood form of this disease tends to evolve into a systemic vasculitis. Dermatomyositis may occur in association with malignant neoplasms. (From Adams et al., Principles of Neurology, 6th ed, pp1405-6)

Myositis - Inflammation of a muscle or muscle tissue.

Myositis Ossificans - A disease characterized by bony deposits or the ossification of muscle tissue.

Myositis, Inclusion Body - Progressive myopathies characterized by the presence of inclusion bodies on muscle biopsy. Sporadic and hereditary forms have been described. The sporadic form is an acquired, adult-onset inflammatory vacuolar myopathy affecting proximal and distal muscles. Familial forms usually begin in childhood and lack inflammatory changes. Both forms feature intracytoplasmic and intranuclear inclusions in muscle tissue. (Adams et al., Principles of Neurology, 6th ed, pp1409-10)

Nervous System Autoimmune Disease, Experimental - Experimental animal models for human AUTOIMMUNE DISEASES OF THE NERVOUS SYSTEM. They include GUILLAIN-BARRE SYNDROME (see NEURITIS, AUTOIMMUNE, EXPERIMENTAL); MYASTHENIA GRAVIS (see MYASTHENIA GRAVIS, AUTOIMMUNE, EXPERIMENTAL); and MULTIPLE SCLEROSIS (see ENCEPHALOMYELITIS, AUTOIMMUNE, EXPERIMENTAL).

Orbital Myositis - Inflammation of the extraocular muscle of the eye. It is characterized by swelling which can lead to ischemia, fibrosis, or ORBITAL PSEUDOTUMOR.

Orbital Pseudotumor - A nonspecific tumor-like inflammatory lesion in the ORBIT of the eye. It is usually composed of mature LYMPHOCYTES; PLASMA CELLS; MACROPHAGES; LEUKOCYTES with varying degrees of FIBROSIS. Orbital pseudotumors are often associated with inflammation of the extraocular muscles (ORBITAL MYOSITIS) or inflammation of the lacrimal glands (DACRYOADENITIS).

Polymyositis - Diseases characterized by inflammation involving multiple muscles. This may occur as an acute or chronic condition associated with medication toxicity (DRUG TOXICITY); CONNECTIVE TISSUE DISEASES; infections; malignant NEOPLASMS; and other disorders. The term polymyositis is frequently used to refer to a specific clinical entity characterized by subacute or slowly progressing symmetrical weakness primarily affecting the proximal limb and trunk muscles. The illness may occur at any age, but is most frequent in the fourth to sixth decade of life. Weakness of pharyngeal and laryngeal muscles, interstitial lung disease, and inflammation of the myocardium may also occur. Muscle biopsy reveals widespread destruction of segments of muscle fibers and an inflammatory cellular response. (Adams et al., Principles of Neurology, 6th ed, pp1404-9)

Pyomyositis - An intramuscular suppuration of the large skeletal muscle groups. It is associated with INFECTION such as STAPHYLOCOCCUS AUREUS and PYODERMA. It was known as a tropical disease but is increasing among the immunocompromised (IMMUNOCOMPROMISED HOST). Symptoms include muscle pain, FEVER, and leucocytosis. It has been diagnosed by MRI SCANS.

Instructional Notations

Type 2 Excludes

A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.

  • inclusion body myositis [IBM] G72.41
  • Diseases of the musculoskeletal system and connective tissue (M00–M99)

    • Disorders of muscles (M60-M63)

        • Myositis (M60)

        • M60 Myositis
        • M60.0 Infective myositis
        • M60.00 Infective myositis, unspecified site
        • M60.000 Infective myositis, unspecified right arm
        • M60.001 Infective myositis, unspecified left arm
        • M60.002 Infective myositis, unspecified arm
        • M60.003 Infective myositis, unspecified right leg
        • M60.004 Infective myositis, unspecified left leg
        • M60.005 Infective myositis, unspecified leg
        • M60.009 Infective myositis, unspecified site
        • M60.01 Infective myositis, shoulder
        • M60.011 Infective myositis, right shoulder
        • M60.012 Infective myositis, left shoulder
        • M60.019 Infective myositis, unspecified shoulder
        • M60.02 Infective myositis, upper arm
        • M60.021 Infective myositis, right upper arm
        • M60.022 Infective myositis, left upper arm
        • M60.029 Infective myositis, unspecified upper arm
        • M60.03 Infective myositis, forearm
        • M60.031 Infective myositis, right forearm
        • M60.032 Infective myositis, left forearm
        • M60.039 Infective myositis, unspecified forearm
        • M60.04 Infective myositis, hand and fingers
        • M60.041 Infective myositis, right hand
        • M60.042 Infective myositis, left hand
        • M60.043 Infective myositis, unspecified hand
        • M60.044 Infective myositis, right finger(s)
        • M60.045 Infective myositis, left finger(s)
        • M60.046 Infective myositis, unspecified finger(s)
        • M60.05 Infective myositis, thigh
        • M60.051 Infective myositis, right thigh
        • M60.052 Infective myositis, left thigh
        • M60.059 Infective myositis, unspecified thigh
        • M60.06 Infective myositis, lower leg
        • M60.061 Infective myositis, right lower leg
        • M60.062 Infective myositis, left lower leg
        • M60.069 Infective myositis, unspecified lower leg
        • M60.07 Infective myositis, ankle, foot and toes
        • M60.070 Infective myositis, right ankle
        • M60.071 Infective myositis, left ankle
        • M60.072 Infective myositis, unspecified ankle
        • M60.073 Infective myositis, right foot
        • M60.074 Infective myositis, left foot
        • M60.075 Infective myositis, unspecified foot
        • M60.076 Infective myositis, right toe(s)
        • M60.077 Infective myositis, left toe(s)
        • M60.078 Infective myositis, unspecified toe(s)
        • M60.08 Infective myositis, other site
        • M60.09 Infective myositis, multiple sites
        • M60.1 Interstitial myositis
        • M60.10 Interstitial myositis of unspecified site
        • M60.11 Interstitial myositis, shoulder
        • M60.111 Interstitial myositis, right shoulder
        • M60.112 Interstitial myositis, left shoulder
        • M60.119 Interstitial myositis, unspecified shoulder
        • M60.12 Interstitial myositis, upper arm
        • M60.121 Interstitial myositis, right upper arm
        • M60.122 Interstitial myositis, left upper arm
        • M60.129 Interstitial myositis, unspecified upper arm
        • M60.13 Interstitial myositis, forearm
        • M60.131 Interstitial myositis, right forearm
        • M60.132 Interstitial myositis, left forearm
        • M60.139 Interstitial myositis, unspecified forearm
        • M60.14 Interstitial myositis, hand
        • M60.141 Interstitial myositis, right hand
        • M60.142 Interstitial myositis, left hand
        • M60.149 Interstitial myositis, unspecified hand
        • M60.15 Interstitial myositis, thigh
        • M60.151 Interstitial myositis, right thigh
        • M60.152 Interstitial myositis, left thigh
        • M60.159 Interstitial myositis, unspecified thigh
        • M60.16 Interstitial myositis, lower leg
        • M60.161 Interstitial myositis, right lower leg
        • M60.162 Interstitial myositis, left lower leg
        • M60.169 Interstitial myositis, unspecified lower leg
        • M60.17 Interstitial myositis, ankle and foot
        • M60.171 Interstitial myositis, right ankle and foot
        • M60.172 Interstitial myositis, left ankle and foot
        • M60.179 Interstitial myositis, unspecified ankle and foot
        • M60.18 Interstitial myositis, other site
        • M60.19 Interstitial myositis, multiple sites
        • M60.2 Foreign body granuloma of soft tissue, not elsewhere classified
        • M60.20 Foreign body granuloma of soft tissue, not elsewhere classified, unspecified site
        • M60.21 Foreign body granuloma of soft tissue, not elsewhere classified, shoulder
        • M60.211 Foreign body granuloma of soft tissue, not elsewhere classified, right shoulder
        • M60.212 Foreign body granuloma of soft tissue, not elsewhere classified, left shoulder
        • M60.219 Foreign body granuloma of soft tissue, not elsewhere classified, unspecified shoulder
        • M60.22 Foreign body granuloma of soft tissue, not elsewhere classified, upper arm
        • M60.221 Foreign body granuloma of soft tissue, not elsewhere classified, right upper arm
        • M60.222 Foreign body granuloma of soft tissue, not elsewhere classified, left upper arm
        • M60.229 Foreign body granuloma of soft tissue, not elsewhere classified, unspecified upper arm
        • M60.23 Foreign body granuloma of soft tissue, not elsewhere classified, forearm
        • M60.231 Foreign body granuloma of soft tissue, not elsewhere classified, right forearm
        • M60.232 Foreign body granuloma of soft tissue, not elsewhere classified, left forearm
        • M60.239 Foreign body granuloma of soft tissue, not elsewhere classified, unspecified forearm
        • M60.24 Foreign body granuloma of soft tissue, not elsewhere classified, hand
        • M60.241 Foreign body granuloma of soft tissue, not elsewhere classified, right hand
        • M60.242 Foreign body granuloma of soft tissue, not elsewhere classified, left hand
        • M60.249 Foreign body granuloma of soft tissue, not elsewhere classified, unspecified hand
        • M60.25 Foreign body granuloma of soft tissue, not elsewhere classified, thigh
        • M60.251 Foreign body granuloma of soft tissue, not elsewhere classified, right thigh
        • M60.252 Foreign body granuloma of soft tissue, not elsewhere classified, left thigh
        • M60.259 Foreign body granuloma of soft tissue, not elsewhere classified, unspecified thigh
        • M60.26 Foreign body granuloma of soft tissue, not elsewhere classified, lower leg
        • M60.261 Foreign body granuloma of soft tissue, not elsewhere classified, right lower leg
        • M60.262 Foreign body granuloma of soft tissue, not elsewhere classified, left lower leg
        • M60.269 Foreign body granuloma of soft tissue, not elsewhere classified, unspecified lower leg
        • M60.27 Foreign body granuloma of soft tissue, not elsewhere classified, ankle and foot
        • M60.271 Foreign body granuloma of soft tissue, not elsewhere classified, right ankle and foot
        • M60.272 Foreign body granuloma of soft tissue, not elsewhere classified, left ankle and foot
        • M60.279 Foreign body granuloma of soft tissue, not elsewhere classified, unspecified ankle and foot
        • M60.28 Foreign body granuloma of soft tissue, not elsewhere classified, other site
        • M60.8 Other myositis
        • M60.80 Other myositis, unspecified site
        • M60.81 Other myositis shoulder
        • M60.811 Other myositis, right shoulder
        • M60.812 Other myositis, left shoulder
        • M60.819 Other myositis, unspecified shoulder
        • M60.82 Other myositis, upper arm
        • M60.821 Other myositis, right upper arm
        • M60.822 Other myositis, left upper arm
        • M60.829 Other myositis, unspecified upper arm
        • M60.83 Other myositis, forearm
        • M60.831 Other myositis, right forearm
        • M60.832 Other myositis, left forearm
        • M60.839 Other myositis, unspecified forearm
        • M60.84 Other myositis, hand
        • M60.841 Other myositis, right hand
        • M60.842 Other myositis, left hand
        • M60.849 Other myositis, unspecified hand
        • M60.85 Other myositis, thigh
        • M60.851 Other myositis, right thigh
        • M60.852 Other myositis, left thigh
        • M60.859 Other myositis, unspecified thigh
        • M60.86 Other myositis, lower leg
        • M60.861 Other myositis, right lower leg
        • M60.862 Other myositis, left lower leg
        • M60.869 Other myositis, unspecified lower leg
        • M60.87 Other myositis, ankle and foot
        • M60.871 Other myositis, right ankle and foot
        • M60.872 Other myositis, left ankle and foot
        • M60.879 Other myositis, unspecified ankle and foot
        • M60.88 Other myositis, other site
        • M60.89 Other myositis, multiple sites
        • M60.9 Myositis, unspecified