M95-M99: Other disorders of the musculoskeletal system and connective tissue
M99: Biomechanical lesions, not elsewhere classified
Biomechanical lesions, included in the M99 group, encompass a broad range of conditions that affect the body's function due to mechanical stress or changes. These conditions typically result from abnormal or excessive forces applied to body tissues, such as muscles, ligaments, bones, and other structures. Causes can be varied including sports injuries, repetitive job-related tasks, or even poor posture. Common symptoms include pain, stiffness, or restricted movement in the affected area. The progression of these conditions can either be rapid following a traumatic event or gradual due to long-term strain. The affected systems are usually the musculoskeletal and nervous systems, as altered biomechanics can impact both structural alignment and nerve function.
Subcodes of M99:
- M99.0: Segmental and somatic dysfunction
- M99.1: Subluxation complex (vertebral)
- M99.2: Subluxation stenosis of neural canal
- M99.3: Osseous stenosis of neural canal
- M99.4: Connective tissue stenosis of neural canal
- M99.5: Intervertebral disc stenosis of neural canal
- M99.6: Osseous and subluxation stenosis of intervertebral foramina
- M99.7: Connective tissue and disc stenosis of intervertebral foramina
- M99.8: Other biomechanical lesions
- M99.9: Biomechanical lesion, unspecified
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