M00–M99: Diseases of the Musculoskeletal System and Connective Tissue
Chapter 13 of ICD-10-CM 2027, 8,707 codes in 24 blocks.
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Chapter instructions
Excludes2: not included here, code separately if applicable
- 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)
Codes in this chapter
All codesBillable only6,687 results
- M21.242Flexion deformity, left finger joints
- M21.249Flexion deformity, unspecified finger joints
- M21.251Flexion deformity, right hip
- M21.252Flexion deformity, left hip
- M21.259Flexion deformity, unspecified hip
- M21.261Flexion deformity, right knee
- M21.262Flexion deformity, left knee
- M21.269Flexion deformity, unspecified knee
- M21.271Flexion deformity, right ankle and toes
- M21.272Flexion deformity, left ankle and toes
- M21.279Flexion deformity, unspecified ankle and toes
- M21.331Wrist drop, right wrist
- M21.332Wrist drop, left wrist
- M21.339Wrist drop, unspecified wrist
- M21.371Foot drop, right foot
- M21.372Foot drop, left foot
- M21.379Foot drop, unspecified foot
- M21.40Flat foot [pes planus] (acquired), unspecified foot
- M21.41Flat foot [pes planus] (acquired), right foot
- M21.42Flat foot [pes planus] (acquired), left foot
- M21.511Acquired clawhand, right hand
- M21.512Acquired clawhand, left hand
- M21.519Acquired clawhand, unspecified hand
- M21.521Acquired clubhand, right hand
- M21.522Acquired clubhand, left hand
- M21.529Acquired clubhand, unspecified hand
- M21.531Acquired clawfoot, right foot
- M21.532Acquired clawfoot, left foot
- M21.539Acquired clawfoot, unspecified foot
- M21.541Acquired clubfoot, right foot
- M21.542Acquired clubfoot, left foot
- M21.549Acquired clubfoot, unspecified foot
- M21.611Bunion of right foot
- M21.612Bunion of left foot
- M21.619Bunion of unspecified foot
- M21.621Bunionette of right foot
- M21.622Bunionette of left foot
- M21.629Bunionette of unspecified foot
- M21.6X1Other acquired deformities of right foot
- M21.6X2Other acquired deformities of left foot
- M21.6X9Other acquired deformities of unspecified foot
- M21.70Unequal limb length (acquired), unspecified site
- M21.721Unequal limb length (acquired), right humerus
- M21.722Unequal limb length (acquired), left humerus
- M21.729Unequal limb length (acquired), unspecified humerus
- M21.731Unequal limb length (acquired), right ulna
- M21.732Unequal limb length (acquired), left ulna
- M21.733Unequal limb length (acquired), right radius
- M21.734Unequal limb length (acquired), left radius
- M21.739Unequal limb length (acquired), unspecified ulna and radius