ICD-10-CM category
M99 Biomechanical lesions, not elsewhere classified
M99 is a category, not a billable code. Report one of the 91 complete codes below.
M99.0…
10 codes
- M99.00Segmental and somatic dysfunction of head region
- M99.01Segmental and somatic dysfunction of cervical region
- M99.02Segmental and somatic dysfunction of thoracic region
- M99.03Segmental and somatic dysfunction of lumbar region
- M99.04Segmental and somatic dysfunction of sacral region
- M99.05Segmental and somatic dysfunction of pelvic region
- M99.06Segmental and somatic dysfunction of lower extremity
- M99.07Segmental and somatic dysfunction of upper extremity
- M99.08Segmental and somatic dysfunction of rib cage
- M99.09Segmental and somatic dysfunction of abdomen and other regions
M99.1…
10 codes
- M99.10Subluxation complex (vertebral) of head region
- M99.11Subluxation complex (vertebral) of cervical region
- M99.12Subluxation complex (vertebral) of thoracic region
- M99.13Subluxation complex (vertebral) of lumbar region
- M99.14Subluxation complex (vertebral) of sacral region
- M99.15Subluxation complex (vertebral) of pelvic region
- M99.16Subluxation complex (vertebral) of lower extremity
- M99.17Subluxation complex (vertebral) of upper extremity
- M99.18Subluxation complex (vertebral) of rib cage
- M99.19Subluxation complex (vertebral) of abdomen and other regions
M99.2…
10 codes
- M99.20Subluxation stenosis of neural canal of head region
- M99.21Subluxation stenosis of neural canal of cervical region
- M99.22Subluxation stenosis of neural canal of thoracic region
- M99.23Subluxation stenosis of neural canal of lumbar region
- M99.24Subluxation stenosis of neural canal of sacral region
- M99.25Subluxation stenosis of neural canal of pelvic region
- M99.26Subluxation stenosis of neural canal of lower extremity
- M99.27Subluxation stenosis of neural canal of upper extremity
- M99.28Subluxation stenosis of neural canal of rib cage
- M99.29Subluxation stenosis of neural canal of abdomen and other regions
M99.3…
10 codes
- M99.30Osseous stenosis of neural canal of head region
- M99.31Osseous stenosis of neural canal of cervical region
- M99.32Osseous stenosis of neural canal of thoracic region
- M99.33Osseous stenosis of neural canal of lumbar region
- M99.34Osseous stenosis of neural canal of sacral region
- M99.35Osseous stenosis of neural canal of pelvic region
- M99.36Osseous stenosis of neural canal of lower extremity
- M99.37Osseous stenosis of neural canal of upper extremity
- M99.38Osseous stenosis of neural canal of rib cage
- M99.39Osseous stenosis of neural canal of abdomen and other regions
M99.4…
10 codes
- M99.40Connective tissue stenosis of neural canal of head region
- M99.41Connective tissue stenosis of neural canal of cervical region
- M99.42Connective tissue stenosis of neural canal of thoracic region
- M99.43Connective tissue stenosis of neural canal of lumbar region
- M99.44Connective tissue stenosis of neural canal of sacral region
- M99.45Connective tissue stenosis of neural canal of pelvic region
- M99.46Connective tissue stenosis of neural canal of lower extremity
- M99.47Connective tissue stenosis of neural canal of upper extremity
- M99.48Connective tissue stenosis of neural canal of rib cage
- M99.49Connective tissue stenosis of neural canal of abdomen and other regions
M99.5…
10 codes
- M99.50Intervertebral disc stenosis of neural canal of head region
- M99.51Intervertebral disc stenosis of neural canal of cervical region
- M99.52Intervertebral disc stenosis of neural canal of thoracic region
- M99.53Intervertebral disc stenosis of neural canal of lumbar region
- M99.54Intervertebral disc stenosis of neural canal of sacral region
- M99.55Intervertebral disc stenosis of neural canal of pelvic region
- M99.56Intervertebral disc stenosis of neural canal of lower extremity
- M99.57Intervertebral disc stenosis of neural canal of upper extremity
- M99.58Intervertebral disc stenosis of neural canal of rib cage
- M99.59Intervertebral disc stenosis of neural canal of abdomen and other regions
M99.6…
10 codes
- M99.60Osseous and subluxation stenosis of intervertebral foramina of head region
- M99.61Osseous and subluxation stenosis of intervertebral foramina of cervical region
- M99.62Osseous and subluxation stenosis of intervertebral foramina of thoracic region
- M99.63Osseous and subluxation stenosis of intervertebral foramina of lumbar region
- M99.64Osseous and subluxation stenosis of intervertebral foramina of sacral region
- M99.65Osseous and subluxation stenosis of intervertebral foramina of pelvic region
- M99.66Osseous and subluxation stenosis of intervertebral foramina of lower extremity
- M99.67Osseous and subluxation stenosis of intervertebral foramina of upper extremity
- M99.68Osseous and subluxation stenosis of intervertebral foramina of rib cage
- M99.69Osseous and subluxation stenosis of intervertebral foramina of abdomen and other regions
M99.7…
10 codes
- M99.70Connective tissue and disc stenosis of intervertebral foramina of head region
- M99.71Connective tissue and disc stenosis of intervertebral foramina of cervical region
- M99.72Connective tissue and disc stenosis of intervertebral foramina of thoracic region
- M99.73Connective tissue and disc stenosis of intervertebral foramina of lumbar region
- M99.74Connective tissue and disc stenosis of intervertebral foramina of sacral region
- M99.75Connective tissue and disc stenosis of intervertebral foramina of pelvic region
- M99.76Connective tissue and disc stenosis of intervertebral foramina of lower extremity
- M99.77Connective tissue and disc stenosis of intervertebral foramina of upper extremity
- M99.78Connective tissue and disc stenosis of intervertebral foramina of rib cage
- M99.79Connective tissue and disc stenosis of intervertebral foramina of abdomen and other regions
M99.8…
10 codes
- M99.80Other biomechanical lesions of head region
- M99.81Other biomechanical lesions of cervical region
- M99.82Other biomechanical lesions of thoracic region
- M99.83Other biomechanical lesions of lumbar region
- M99.84Other biomechanical lesions of sacral region
- M99.85Other biomechanical lesions of pelvic region
- M99.86Other biomechanical lesions of lower extremity
- M99.87Other biomechanical lesions of upper extremity
- M99.88Other biomechanical lesions of rib cage
- M99.89Other biomechanical lesions of abdomen and other regions
M99.9…
1 code
Outside the US? M99 in the international WHO ICD-10 lists its inclusion and exclusion notes.
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ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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