M99.0
M99.0 — Segmental and somatic dysfunction
Non-billable headerICD-10-CM
M99.0 is a non-billable header ICD-10-CM code for segmental and somatic dysfunction. It cannot be billed on its own: choose one of the more specific child codes below.
Risk adjustment
M99.0 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Code to one of these instead M99.0
10 child codes. Green means billable.
- 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
Related codes at this level
Codes that share M99. If M99.0 is not quite right, the correct code is usually one of these.
- M99.1Subluxation complex (vertebral)
- M99.2Subluxation stenosis of neural canal
- M99.3Osseous stenosis of neural canal
- M99.4Connective tissue stenosis of neural canal
- M99.5Intervertebral disc stenosis of neural canal
- M99.6Osseous and subluxation stenosis of intervertebral foramina
- M99.7Connective tissue and disc stenosis of intervertebral foramina
- M99.8Other biomechanical lesions
- M99.9Biomechanical lesion, unspecified
Questions about M99.0
- Is M99.0 a billable ICD-10-CM code?
- No. M99.0 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does M99.0 sit in the tabular list?
- Diseases of the musculoskeletal system and connective tissue (M00-M99), in the block Biomechanical lesions, not elsewhere classified (M99).