M99.80 Other biomechanical lesions of head region

Billable ICD-10-CM code, FY2026.

Applies from M99 Biomechanical lesions, not elsewhere classified

Notes

• This category should not be used if the condition can be classified elsewhere.

MS-DRG index

Defines the logic of DRG(s) 564-566 in MDC 08.

Approximate ICD-9-CM (GEMs)

• 738.19 Other specified acquired deformity of head (approximate)

Code annotations containing back-references to M99.80

Back-references to M99

• Type 1 Excludes: M43.5 Other recurrent vertebral dislocation ("biomechanical lesions NEC (M99.-)")

Diagnosis Index entries for M99.80

• Lesion (s) (nontraumatic) › biomechanical › specified type NEC › head region
• Lesion (s) (nontraumatic) › biomechanical › specified type NEC › occipitocervical

Nearby codes

• 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
• M99.8 Other biomechanical lesions
• M99.80 Other biomechanical lesions of head region (this code)
• 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