M00-M99
ICD-10-CM Chapter 13: Diseases of the musculoskeletal system and connective tissue
Chapter 13 of the ICD-10-CM tabular list covers M00-M99. It contains 24 blocks of related categories, listed below with the categories published in each.
Excludes2
Not included here. The condition is not part of this code, but a patient may have both, and both codes may be reported together.
- 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)
Notes
- Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
M00-M25: Arthropathies
M00-M02: Infectious arthropathies
M04: Autoinflammatory syndromes
M05-M14: Inflammatory polyarthropathies
- M05Rheumatoid arthritis with rheumatoid factorcategory
- M06Other rheumatoid arthritiscategory
- M07Enteropathic arthropathiescategory
- M08Juvenile arthritiscategory
- M1AChronic goutcategory
- M10Goutcategory
- M11Other crystal arthropathiescategory
- M12Other and unspecified arthropathycategory
- M13Other arthritiscategory
- M14Arthropathies in other diseases classified elsewherecategory
M15-M19: Osteoarthritis
M20-M25: Other joint disorders
M26-M27: Dentofacial anomalies [including malocclusion] and other disorders of jaw
M30-M36: Systemic connective tissue disorders
- M30Polyarteritis nodosa and related conditionscategory
- M31Other necrotizing vasculopathiescategory
- M32Systemic lupus erythematosus (SLE)category
- M33Dermatopolymyositiscategory
- M34Systemic sclerosis [scleroderma]category
- M35Other systemic involvement of connective tissuecategory
- M36Systemic disorders of conn tiss in diseases classd elswhrcategory
M40-M54: Dorsopathies
M40-M43: Deforming dorsopathies
M45-M49: Spondylopathies
M50-M54: Other dorsopathies
M60-M79: Soft tissue disorders
M60-M63: Disorders of muscles
M65-M67: Disorders of synovium and tendon
M70-M79: Other soft tissue disorders
- M70Soft tissue disorders related to use, overuse and pressurecategory
- M71Other bursopathiescategory
- M72Fibroblastic disorderscategory
- M75Shoulder lesionscategory
- M76Enthesopathies, lower limb, excluding footcategory
- M77Other enthesopathiescategory
- M79Oth and unsp soft tissue disorders, not elsewhere classifiedcategory
M80-M94: Osteopathies and chondropathies
M80-M85: Disorders of bone density and structure
M86-M90: Other osteopathies
M91-M94: Chondropathies
M95: Other disorders of the musculoskeletal system and connective tissue
M96: Intraoperative and postprocedural complications and disorders of musculoskeletal system, not elsewhere classified
M97: Periprosthetic fracture around internal prosthetic joint
M99: Biomechanical lesions, not elsewhere classified
Source
ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.