M99.18
✓ Billable
Subluxation complex (vertebral) of rib cage
ICD-10-CM · FY2026 · Diseases of the Musculoskeletal System and Connective Tissue
Code
M99.18
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Diseases of the Musculoskeletal System and Connective Tissue
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code M99.18?
ICD-10-CM code M99.18 represents Subluxation complex (vertebral) of rib cage. It is a billable diagnosis code in the Diseases of the Musculoskeletal System and Connective Tissue chapter, effective October 1, 2025 – September 30, 2026.
Is M99.18 billable?
Yes. M99.18 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is M99.18 in?
M99.18 belongs to the Diseases of the Musculoskeletal System and Connective Tissue chapter (M00–M99) of ICD-10-CM.
Related codes in the M99 category
M99
Biomechanical lesions, not elsewhere classified
Non-billable
M99.0
Segmental and somatic dysfunction
Non-billable
M99.1
Subluxation complex (vertebral)
Non-billable
M99.2
Subluxation stenosis of neural canal
Non-billable
M99.3
Osseous stenosis of neural canal
Non-billable
M99.4
Connective tissue stenosis of neural canal
Non-billable
M99.5
Intervertebral disc stenosis of neural canal
Non-billable
M99.6
Osseous and subluxation stenosis of intervertebral foramina
Non-billable
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