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

Note:
Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
Excludes 2:
arthropathic psoriasis (L40.5-)
certain conditions originating in the perinatal period (P04-P96)
certain infectious and parasitic diseases (A00-B99)
compartment syndrome (traumatic) (T79.A-)
complications of pregnancy, childbirth and the puerperium (O00-O9A)
congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
endocrine, nutritional and metabolic diseases (E00-E88)
injury, poisoning and certain other consequences of external causes (S00-T88)
neoplasms (C00-D49)
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Systemic connective tissue disorders (M30-M36)

Includes:
autoimmune disease NOS
collagen (vascular) disease NOS
systemic autoimmune disease
systemic collagen (vascular) disease
Excludes 1:
autoimmune disease, single organ or single cell-type -code to relevant condition category
M30 Polyarteritis nodosa and related conditions [+]
Excludes 1: microscopic polyarteritis (M31.7)
M31 Other necrotizing vasculopathies [+]
M32 Systemic lupus erythematosus (SLE) [+]
Excludes 1: lupus erythematosus (discoid) (NOS) (L93.0)
M33 Dermatopolymyositis [+]
M34 Systemic sclerosis [scleroderma] [+]
Excludes 1: circumscribed scleroderma (L94.0)
neonatal scleroderma (P83.88)
M35 Other systemic involvement of connective tissue [+]
Excludes 1: reactive perforating collagenosis (L87.1)
M36 Systemic disorders of connective tissue in diseases classified elsewhere [+]
Excludes 2: arthropathies in diseases classified elsewhere (M14.-)

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