Segmental and somatic dysfunction
Segmental and somatic dysfunction
M99.0 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.
Segmental and somatic dysfunction of the head region — biomechanical impairment of skeletal, arthrodal, and myofascial structures of the cranial region, including associated vascular, lymphatic, and neural elements, not classifiable under a more specific diagnosis.
Segmental and somatic dysfunction of the cervical region describes restricted or aberrant motion, asymmetry, tissue texture changes, or tenderness localized to one or more cervical spinal segments, as assessed by a qualified provider.
M99.02 identifies segmental and somatic dysfunction of the thoracic region — a biomechanical lesion category capturing impaired mobility, altered tissue texture, and asymmetry of the thoracic vertebral segments as assessed by a clinician.
Segmental and somatic dysfunction of the lumbar region — a biomechanical lesion of the lower spine coded under M99 (Biomechanical Lesions, Not Elsewhere Classified) when no more specific structural diagnosis applies.
M99.04 identifies segmental and somatic dysfunction of the sacral region — impaired or altered biomechanical function of the sacrum and its articulations, including the sacroiliac joints, at the base of the spine.
M99.05 identifies segmental and somatic dysfunction localized to the pelvic region — a biomechanical classification capturing restricted or altered motion, tenderness, and tissue texture changes in pelvic structures that cannot be classified under a more specific diagnosis.
M99.06 identifies segmental and somatic dysfunction localized to the lower extremity, classified under biomechanical lesions not elsewhere classified (M99) in ICD-10-CM Chapter 13.
Segmental and somatic dysfunction of the upper extremity, covering restricted or altered motion and tissue texture changes in the shoulder girdle, arm, elbow, forearm, wrist, and hand — used primarily in osteopathic manipulative treatment (OMT) and chiropractic billing contexts.
M99.08 identifies segmental and somatic dysfunction localized to the rib cage, classified as a biomechanical lesion under ICD-10-CM Chapter 13.
Segmental and somatic dysfunction affecting the abdominal region or any anatomical area not captured by the more specific M99.00–M99.08 codes — the designated catch-all within the M99.0 family.