| M625A9 | Muscle wasting and atrophy, not elsewhere classified, back, unspecified level |
| M628 | Other specified disorders of muscle |
| M6281 | Muscle weakness (generalized) |
| M6282 | Rhabdomyolysis |
| M6283 | Muscle spasm |
| M62830 | Muscle spasm of back |
| M62831 | Muscle spasm of calf |
| M62838 | Other muscle spasm |
| M6284 | Sarcopenia |
| M6285 | Dysfunction of the multifidus muscles, lumbar region |
| M6289 | Other specified disorders of muscle |
| M629 | Disorder of muscle, unspecified |
| M63 | Disorders of muscle in diseases classified elsewhere |
| M638 | Disorders of muscle in diseases classified elsewhere |
| M6380 | Disorders of muscle in diseases classified elsewhere, unspecified site |
| M6381 | Disorders of muscle in diseases classified elsewhere, shoulder |
| M63811 | Disorders of muscle in diseases classified elsewhere, right shoulder |
| M63812 | Disorders of muscle in diseases classd elswhr, left shoulder Disorders of muscle in diseases classified elsewhere, left shoulder |
| M63819 | Disorders of muscle in diseases classd elswhr, unsp shoulder Disorders of muscle in diseases classified elsewhere, unspecified shoulder |
| M6382 | Disorders of muscle in diseases classified elsewhere, upper arm |
| M63821 | Disorders of muscle in diseases classified elsewhere, right upper arm |
| M63822 | Disorders of muscle in diseases classified elsewhere, left upper arm |
| M63829 | Disorders of muscle in diseases classified elsewhere, unspecified upper arm |
| M6383 | Disorders of muscle in diseases classified elsewhere, forearm |
| M63831 | Disorders of muscle in diseases classd elswhr, right forearm Disorders of muscle in diseases classified elsewhere, right forearm |
| M63832 | Disorders of muscle in diseases classified elsewhere, left forearm |
| M63839 | Disorders of muscle in diseases classified elsewhere, unspecified forearm |
| M6384 | Disorders of muscle in diseases classified elsewhere, hand |
| M63841 | Disorders of muscle in diseases classified elsewhere, right hand |
| M63842 | Disorders of muscle in diseases classified elsewhere, left hand |
| M63849 | Disorders of muscle in diseases classified elsewhere, unspecified hand |
| M6385 | Disorders of muscle in diseases classified elsewhere, thigh |
| M63851 | Disorders of muscle in diseases classified elsewhere, right thigh |
| M63852 | Disorders of muscle in diseases classified elsewhere, left thigh |
| M63859 | Disorders of muscle in diseases classified elsewhere, unspecified thigh |
| M6386 | Disorders of muscle in diseases classified elsewhere, lower leg |
| M63861 | Disorders of muscle in diseases classified elsewhere, right lower leg |
| M63862 | Disorders of muscle in diseases classified elsewhere, left lower leg |
| M63869 | Disorders of muscle in diseases classified elsewhere, unspecified lower leg |
| M6387 | Disorders of muscle in diseases classified elsewhere, ankle and foot |
| M63871 | Disorders of muscle in diseases classified elsewhere, right ankle and foot |
| M63872 | Disorders of muscle in diseases classified elsewhere, left ankle and foot |
| M63879 | Disorders of muscle in diseases classified elsewhere, unspecified ankle and foot |
| M6388 | Disorders of muscle in diseases classified elsewhere, other site |
| M6389 | Disorders of muscle in diseases classified elsewhere, multiple sites |
| M65 | Synovitis and tenosynovitis |
| M650 | Abscess of tendon sheath |
| M6500 | Abscess of tendon sheath, unspecified site |
| M6501 | Abscess of tendon sheath, shoulder |
| M65011 | Abscess of tendon sheath, right shoulder |