|  M99 |  | Biomechanical lesions, not elsewhere classified  | 
	
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		| Notes | This category should not be used if the condition can be classified elsewhere. 
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		|  M99.0 |  | Segmental and somatic dysfunction |  |  |  | 
	
		|  M99.00 |  | Segmental and somatic dysfunction of head region |  |  |  |  | 
	
		|  M99.01 |  | Segmental and somatic dysfunction of cervical region |  |  |  |  | 
	
		|  M99.02 |  | Segmental and somatic dysfunction of thoracic region |  |  |  |  | 
	
		|  M99.03 |  | Segmental and somatic dysfunction of lumbar region |  |  |  |  | 
	
		|  M99.04 |  | Segmental and somatic dysfunction of sacral region |  |  |  |  | 
	
		|  M99.05 |  | Segmental and somatic dysfunction of pelvic region |  |  |  |  | 
	
		|  M99.06 |  | Segmental and somatic dysfunction of lower extremity |  |  |  |  | 
	
		|  M99.07 |  | Segmental and somatic dysfunction of upper extremity |  |  |  |  | 
	
		|  M99.08 |  | Segmental and somatic dysfunction of rib cage |  |  |  |  | 
	
		|  M99.09 |  | Segmental and somatic dysfunction of abdomen and other regions |  |  | 
|  |  | 
	
		|  M99.1 |  | Subluxation complex (vertebral) |  |  |  | 
	
		|  M99.10 |  | Subluxation complex (vertebral) of head region |  |  |  |  | 
	
		|  M99.11 |  | Subluxation complex (vertebral) of cervical region |  |  |  |  | 
	
		|  M99.12 |  | Subluxation complex (vertebral) of thoracic region |  |  |  |  | 
	
		|  M99.13 |  | Subluxation complex (vertebral) of lumbar region |  |  |  |  | 
	
		|  M99.14 |  | Subluxation complex (vertebral) of sacral region |  |  |  |  | 
	
		|  M99.15 |  | Subluxation complex (vertebral) of pelvic region |  |  |  |  | 
	
		|  M99.16 |  | Subluxation complex (vertebral) of lower extremity |  |  |  |  | 
	
		|  M99.17 |  | Subluxation complex (vertebral) of upper extremity |  |  |  |  | 
	
		|  M99.18 |  | Subluxation complex (vertebral) of rib cage |  |  |  |  | 
	
		|  M99.19 |  | Subluxation complex (vertebral) of abdomen and other regions |  |  | 
|  |  | 
	
		|  M99.2 |  | Subluxation stenosis of neural canal |  |  |  | 
	
		|  M99.20 |  | Subluxation stenosis of neural canal of head region |  |  |  |  | 
	
		|  M99.21 |  | Subluxation stenosis of neural canal of cervical region |  |  |  |  | 
	
		|  M99.22 |  | Subluxation stenosis of neural canal of thoracic region |  |  |  |  | 
	
		|  M99.23 |  | Subluxation stenosis of neural canal of lumbar region |  |  |  |  | 
	
		|  M99.24 |  | Subluxation stenosis of neural canal of sacral region |  |  |  |  | 
	
		|  M99.25 |  | Subluxation stenosis of neural canal of pelvic region |  |  |  |  | 
	
		|  M99.26 |  | Subluxation stenosis of neural canal of lower extremity |  |  |  |  | 
	
		|  M99.27 |  | Subluxation stenosis of neural canal of upper extremity |  |  |  |  | 
	
		|  M99.28 |  | Subluxation stenosis of neural canal of rib cage |  |  |  |  | 
	
		|  M99.29 |  | Subluxation stenosis of neural canal of abdomen and other regions |  |  | 
|  |  | 
	
		|  M99.3 |  | Osseous stenosis of neural canal |  |  |  | 
	
		|  M99.30 |  | Osseous stenosis of neural canal of head region |  |  |  |  | 
	
		|  M99.31 |  | Osseous stenosis of neural canal of cervical region |  |  |  |  | 
	
		|  M99.32 |  | Osseous stenosis of neural canal of thoracic region |  |  |  |  | 
	
		|  M99.33 |  | Osseous stenosis of neural canal of lumbar region |  |  |  |  | 
	
		|  M99.34 |  | Osseous stenosis of neural canal of sacral region |  |  |  |  | 
	
		|  M99.35 |  | Osseous stenosis of neural canal of pelvic region |  |  |  |  | 
	
		|  M99.36 |  | Osseous stenosis of neural canal of lower extremity |  |  |  |  | 
	
		|  M99.37 |  | Osseous stenosis of neural canal of upper extremity |  |  |  |  | 
	
		|  M99.38 |  | Osseous stenosis of neural canal of rib cage |  |  |  |  | 
	
		|  M99.39 |  | Osseous stenosis of neural canal of abdomen and other regions |  |  | 
|  |  | 
	
		|  M99.4 |  | Connective tissue stenosis of neural canal |  |  |  | 
	
		|  M99.40 |  | Connective tissue stenosis of neural canal of head region |  |  |  |  | 
	
		|  M99.41 |  | Connective tissue stenosis of neural canal of cervical region |  |  |  |  | 
	
		|  M99.42 |  | Connective tissue stenosis of neural canal of thoracic region |  |  |  |  | 
	
		|  M99.43 |  | Connective tissue stenosis of neural canal of lumbar region |  |  |  |  | 
	
		|  M99.44 |  | Connective tissue stenosis of neural canal of sacral region |  |  |  |  | 
	
		|  M99.45 |  | Connective tissue stenosis of neural canal of pelvic region |  |  |  |  | 
	
		|  M99.46 |  | Connective tissue stenosis of neural canal of lower extremity |  |  |  |  | 
	
		|  M99.47 |  | Connective tissue stenosis of neural canal of upper extremity |  |  |  |  | 
	
		|  M99.48 |  | Connective tissue stenosis of neural canal of rib cage |  |  |  |  | 
	
		|  M99.49 |  | Connective tissue stenosis of neural canal of abdomen and other regions |  |  | 
|  |  | 
	
		|  M99.5 |  | Intervertebral disc stenosis of neural canal |  |  |  | 
	
		|  M99.50 |  | Intervertebral disc stenosis of neural canal of head region |  |  |  |  | 
	
		|  M99.51 |  | Intervertebral disc stenosis of neural canal of cervical region |  |  |  |  | 
	
		|  M99.52 |  | Intervertebral disc stenosis of neural canal of thoracic region |  |  |  |  | 
	
		|  M99.53 |  | Intervertebral disc stenosis of neural canal of lumbar region |  |  |  |  | 
	
		|  M99.54 |  | Intervertebral disc stenosis of neural canal of sacral region |  |  |  |  | 
	
		|  M99.55 |  | Intervertebral disc stenosis of neural canal of pelvic region |  |  |  |  | 
	
		|  M99.56 |  | Intervertebral disc stenosis of neural canal of lower extremity |  |  |  |  | 
	
		|  M99.57 |  | Intervertebral disc stenosis of neural canal of upper extremity |  |  |  |  | 
	
		|  M99.58 |  | Intervertebral disc stenosis of neural canal of rib cage |  |  |  |  | 
	
		|  M99.59 |  | Intervertebral disc stenosis of neural canal of abdomen and other regions |  |  | 
|  |  | 
	
		|  M99.6 |  | Osseous and subluxation stenosis of intervertebral foramina |  |  |  | 
	
		|  M99.60 |  | Osseous and subluxation stenosis of intervertebral foramina of head region |  |  |  |  | 
	
		|  M99.61 |  | Osseous and subluxation stenosis of intervertebral foramina of cervical region |  |  |  |  | 
	
		|  M99.62 |  | Osseous and subluxation stenosis of intervertebral foramina of thoracic region |  |  |  |  | 
	
		|  M99.63 |  | Osseous and subluxation stenosis of intervertebral foramina of lumbar region |  |  |  |  | 
	
		|  M99.64 |  | Osseous and subluxation stenosis of intervertebral foramina of sacral region |  |  |  |  | 
	
		|  M99.65 |  | Osseous and subluxation stenosis of intervertebral foramina of pelvic region |  |  |  |  | 
	
		|  M99.66 |  | Osseous and subluxation stenosis of intervertebral foramina of lower extremity |  |  |  |  | 
	
		|  M99.67 |  | Osseous and subluxation stenosis of intervertebral foramina of upper extremity |  |  |  |  | 
	
		|  M99.68 |  | Osseous and subluxation stenosis of intervertebral foramina of rib cage |  |  |  |  | 
	
		|  M99.69 |  | Osseous and subluxation stenosis of intervertebral foramina of abdomen and other regions |  |  | 
|  |  | 
	
		|  M99.7 |  | Connective tissue and disc stenosis of intervertebral foramina |  |  |  | 
	
		|  M99.70 |  | Connective tissue and disc stenosis of intervertebral foramina of head region |  |  |  |  | 
	
		|  M99.71 |  | Connective tissue and disc stenosis of intervertebral foramina of cervical region |  |  |  |  | 
	
		|  M99.72 |  | Connective tissue and disc stenosis of intervertebral foramina of thoracic region |  |  |  |  | 
	
		|  M99.73 |  | Connective tissue and disc stenosis of intervertebral foramina of lumbar region |  |  |  |  | 
	
		|  M99.74 |  | Connective tissue and disc stenosis of intervertebral foramina of sacral region |  |  |  |  | 
	
		|  M99.75 |  | Connective tissue and disc stenosis of intervertebral foramina of pelvic region |  |  |  |  | 
	
		|  M99.76 |  | Connective tissue and disc stenosis of intervertebral foramina of lower extremity |  |  |  |  | 
	
		|  M99.77 |  | Connective tissue and disc stenosis of intervertebral foramina of upper extremity |  |  |  |  | 
	
		|  M99.78 |  | Connective tissue and disc stenosis of intervertebral foramina of rib cage |  |  |  |  | 
	
		|  M99.79 |  | Connective tissue and disc stenosis of intervertebral foramina of abdomen and other regions |  |  | 
|  |  | 
	
		|  M99.8 |  | Other biomechanical lesions |  |  |  | 
	
		|  M99.80 |  | Other biomechanical lesions of head region |  |  |  |  | 
	
		|  M99.81 |  | Other biomechanical lesions of cervical region |  |  |  |  | 
	
		|  M99.82 |  | Other biomechanical lesions of thoracic region |  |  |  |  | 
	
		|  M99.83 |  | Other biomechanical lesions of lumbar region |  |  |  |  | 
	
		|  M99.84 |  | Other biomechanical lesions of sacral region |  |  |  |  | 
	
		|  M99.85 |  | Other biomechanical lesions of pelvic region |  |  |  |  | 
	
		|  M99.86 |  | Other biomechanical lesions of lower extremity |  |  |  |  | 
	
		|  M99.87 |  | Other biomechanical lesions of upper extremity |  |  |  |  | 
	
		|  M99.88 |  | Other biomechanical lesions of rib cage |  |  |  |  | 
	
		|  M99.89 |  | Other biomechanical lesions of abdomen and other regions |  |  | 
|  |  | 
	
		|  M99.9 |  | Biomechanical lesion, unspecified |  |