Chapter 13

M00–M99: Diseases of the Musculoskeletal System and Connective Tissue

Diseases of the Musculoskeletal System and Connective Tissue diagnostic classification updated for 2026.

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)
Internal Codes
  • M07.60

    Enteropathic arthropathies, unspecified site

  • M07.61

    Enteropathic arthropathies, shoulder

  • M07.611

    Enteropathic arthropathies, right shoulder

  • M07.612

    Enteropathic arthropathies, left shoulder

  • M07.619

    Enteropathic arthropathies, unspecified shoulder

  • M07.62

    Enteropathic arthropathies, elbow

  • M07.621

    Enteropathic arthropathies, right elbow

  • M07.622

    Enteropathic arthropathies, left elbow

  • M07.629

    Enteropathic arthropathies, unspecified elbow

  • M07.63

    Enteropathic arthropathies, wrist

  • M07.631

    Enteropathic arthropathies, right wrist

  • M07.632

    Enteropathic arthropathies, left wrist

  • M07.639

    Enteropathic arthropathies, unspecified wrist

  • M07.64

    Enteropathic arthropathies, hand

  • M07.641

    Enteropathic arthropathies, right hand

  • M07.642

    Enteropathic arthropathies, left hand

  • M07.649

    Enteropathic arthropathies, unspecified hand

  • M07.65

    Enteropathic arthropathies, hip

  • M07.651

    Enteropathic arthropathies, right hip

  • M07.652

    Enteropathic arthropathies, left hip

  • M07.659

    Enteropathic arthropathies, unspecified hip

  • M07.66

    Enteropathic arthropathies, knee

  • M07.661

    Enteropathic arthropathies, right knee

  • M07.662

    Enteropathic arthropathies, left knee

  • M07.669

    Enteropathic arthropathies, unspecified knee

  • M07.67

    Enteropathic arthropathies, ankle and foot

  • M07.671

    Enteropathic arthropathies, right ankle and foot

  • M07.672

    Enteropathic arthropathies, left ankle and foot

  • M07.679

    Enteropathic arthropathies, unspecified ankle and foot

  • M07.68

    Enteropathic arthropathies, vertebrae

  • M07.69

    Enteropathic arthropathies, multiple sites

  • M08

    Juvenile arthritis

  • M08.0

    Unspecified juvenile rheumatoid arthritis

  • M08.00

    Unspecified juvenile rheumatoid arthritis of unspecified site

  • M08.01

    Unspecified juvenile rheumatoid arthritis, shoulder

  • M08.011

    Unspecified juvenile rheumatoid arthritis, right shoulder

  • M08.012

    Unspecified juvenile rheumatoid arthritis, left shoulder

  • M08.019

    Unspecified juvenile rheumatoid arthritis, unspecified shoulder

  • M08.02

    Unspecified juvenile rheumatoid arthritis of elbow

  • M08.021

    Unspecified juvenile rheumatoid arthritis, right elbow

  • M08.022

    Unspecified juvenile rheumatoid arthritis, left elbow

  • M08.029

    Unspecified juvenile rheumatoid arthritis, unspecified elbow

  • M08.03

    Unspecified juvenile rheumatoid arthritis, wrist

  • M08.031

    Unspecified juvenile rheumatoid arthritis, right wrist

  • M08.032

    Unspecified juvenile rheumatoid arthritis, left wrist

  • M08.039

    Unspecified juvenile rheumatoid arthritis, unspecified wrist

  • M08.04

    Unspecified juvenile rheumatoid arthritis, hand

  • M08.041

    Unspecified juvenile rheumatoid arthritis, right hand

  • M08.042

    Unspecified juvenile rheumatoid arthritis, left hand

  • M08.049

    Unspecified juvenile rheumatoid arthritis, unspecified hand

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