Other biomechanical lesions
Other biomechanical lesions
M99.8 is a header (parent) code in the ICD-10-CM hierarchy. It is not billable for claim submission. Use one of the billable child codes listed below.
Billable codes in this category
Each of the codes below is billable. Choose the one that most accurately describes the patient's diagnosis.
A nonallopathic (biomechanical) lesion of the head region that does not fit a more specific M99 subcategory — covering functional, somatic, or structural dysfunctions at the cranial or occipitocervical level classified elsewhere in M99.
M99.81 identifies biomechanical lesions of the cervical region that fall outside more specifically defined categories in the M99 code block, covering structural and functional cervical spine dysfunction not classifiable elsewhere.
M99.82 captures biomechanical lesions of the thoracic region that fall outside the more specific M99 subcategories — a residual 'other' bucket for thoracic-region mechanical dysfunction not classifiable elsewhere in the M99 hierarchy.
M99.83 classifies biomechanical lesions of the lumbar region that do not fit the more specific M99 subcategory definitions — a catch-all for lumbar-region biomechanical dysfunction not elsewhere captured in the M99 hierarchy.
M99.84 captures biomechanical lesions of the sacral region that cannot be classified under a more specific diagnostic category elsewhere in ICD-10-CM, including nonallopathic sacral dysfunction recognized in chiropractic and osteopathic practice.
M99.85 captures biomechanical lesions of the pelvic region — including the hip and pubic area — that do not fit a more specific M99 subcategory such as segmental and somatic dysfunction (M99.05) or intervertebral disc stenosis (M99.75).
M99.86 classifies biomechanical lesions of the lower extremity that do not fit a more specific musculoskeletal diagnosis code elsewhere in ICD-10-CM.
M99.87 captures biomechanical dysfunction of the upper extremity — including acromioclavicular and sternoclavicular joint lesions — that cannot be classified under a more specific musculoskeletal diagnosis code.
M99.88 identifies biomechanical lesions of the rib cage that do not fit a more specific M99 subcategory — including costochondral, costovertebral, sternochondral, and general rib cage nonallopathic lesions.
M99.89 captures biomechanical lesions of the abdomen and any anatomical regions not covered by the more specific M99.80–M99.88 site codes — a true catch-all for the M99.8 subcategory.