M99.08 Segmental and somatic dysfunction of rib cage

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) 555-556 in MDC 08.

Approximate ICD-9-CM (GEMs)

• 739.8 Nonallopathic lesions, rib cage (approximate)

Code annotations containing back-references to M99.08

Back-references to M99

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

Diagnosis Index entries for M99.08

• Dysfunction › somatic › costochondral
• Dysfunction › somatic › costovertebral
• Dysfunction › somatic › rib cage
• Dysfunction › somatic › sternochondral

Nearby codes

• M99.03 Segmental and somatic dysfunction of lumbar region
• M99.04 Segmental and somatic dysfunction of sacral region
• M99.05 Segmental and somatic dysfunction of pelvic region
• M99.06 Segmental and somatic dysfunction of lower extremity
• M99.07 Segmental and somatic dysfunction of upper extremity
• M99.08 Segmental and somatic dysfunction of rib cage (this code)
• M99.09 Segmental and somatic dysfunction of abdomen and other regions
• M99.1 Subluxation complex (vertebral)
• M99.10 Subluxation complex (vertebral) of head region
• M99.11 Subluxation complex (vertebral) of cervical region
• M99.12 Subluxation complex (vertebral) of thoracic region