M99 Biomechanical lesions, not elsewhere classified
ICD-10-CM category M99 sits in Chapter 13 (Diseases of the musculoskeletal system and connective tissue, M00-M99). It contains 91 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.
Subcategories
M99.0 Segmental and somatic dysfunctionM99.1 Subluxation complex (vertebral)M99.2 Subluxation stenosis of neural canalM99.3 Osseous stenosis of neural canalM99.4 Connective tissue stenosis of neural canalM99.5 Intervertebral disc stenosis of neural canalM99.6 Osseous and subluxation stenosis of intervertebral foraminaM99.7 Connective tiss and disc stenosis of intervertebral foraminaM99.8 Other biomechanical lesions
Billable codes in M99
| Code | Description |
|---|---|
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 |
M99.10 | 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 |
M99.20 | 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 |
M99.30 | 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 |
M99.40 | 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 |
M99.50 | 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 |
M99.60 | 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 |
M99.70 | 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 |
M99.80 | 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 |
Search within ICD-10-CM for M99 and related codes
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