Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue
ICD-10-CM codes M00-M99
Includes back pain, osteoarthritis, rheumatoid arthritis, osteoporosis, gout, disc disorders, tendinitis, and connective tissue diseases like lupus. Low back pain (M54.5) and knee osteoarthritis (M17) are among the most frequently coded conditions in outpatient medicine.
M00-M02
Infectious Arthropathies
M04-M04
Autoinflammatory Syndromes
M05-M14
Inflammatory Polyarthropathies
M15-M19
Osteoarthritis
M20-M25
Other Joint Disorders
M26-M27
Dentofacial Anomalies and Other Disorders of Jaw
M30-M36
Systemic Connective Tissue Disorders
M40-M43
Deforming Dorsopathies
M45-M49
Spondylopathies
M50-M54
Other Dorsopathies
M60-M63
Disorders of Muscles
M65-M67
Disorders of Synovium and Tendon
M70-M79
Other Soft Tissue Disorders
M80-M85
Disorders of Bone Density and Structure
M86-M90
Other Osteopathies
M91-M94
Chondropathies
M95-M95
Other Disorders of the Musculoskeletal System
M96-M96
Intraoperative and Postprocedural Complications of Musculoskeletal System
M97-M97
Periprosthetic Fracture Around Internal Prosthetic Joint
M99-M99
Biomechanical Lesions
Frequently Asked Questions
What ICD-10 codes are in Chapter 13?
Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue covers ICD-10-CM codes M00-M99. It contains 20 code blocks with 78 top-level categories.
What conditions does ICD-10 Chapter 13 cover?
Includes back pain, osteoarthritis, rheumatoid arthritis, osteoporosis, gout, disc disorders, tendinitis, and connective tissue diseases like lupus. Low back pain (M54.5) and knee osteoarthritis (M17) are among the most frequently coded conditions in outpatient medicine. This chapter includes codes from M00-M99.
How many code blocks are in Chapter 13?
Chapter 13 has 20 code blocks: M00-M02 (Infectious Arthropathies), M04-M04 (Autoinflammatory Syndromes), M05-M14 (Inflammatory Polyarthropathies), M15-M19 (Osteoarthritis), and 16 more.
Is there an ICD-11 equivalent of ICD-10 Chapter 13?
ICD-11 reorganizes many chapters compared to ICD-10. Some conditions in Chapter 13 may appear in different ICD-11 chapters. Use the ICD-10 to ICD-11 converter to find specific code equivalents.
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