ICD-10-CM 2027
ICD-10 code for cervical spine fusion
From the official ICD-10-CM alphabetic index entry “Fusion, fused (congenital) › cervical spine”. Page updated September 29, 2026.
About coding cervical spine fusion
The ICD-10-CM code for cervical spine fusion is M43.22 (Fusion of spine, cervical region).
Within M43.2 (fusion of spine), M43.22 is specifically for fusion of spine, cervical region. Related codes cover site unspecified (M43.20), occipito-atlanto-axial region (M43.21), cervicothoracic region (M43.23), thoracic region (M43.24), thoracolumbar region (M43.25), lumbar region (M43.26), lumbosacral region (M43.27) and sacral and sacrococcygeal region (M43.28).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 551 (Medical Back Problems with MCC, relative weight 1.6358) and DRG 552 (Medical Back Problems without MCC, relative weight 0.9584), in MDC 08 (Diseases and Disorders of the Musculoskeletal System and Connective Tissue), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about cervical spine fusion ICD-10 codes
What is the ICD-10 code for cervical spine fusion?
- M43.22 — Fusion of spine, cervical region.
Is M43.22 billable?
- Yes. M43.22 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can M43.22 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict M43.22 as a principal diagnosis.
Is M43.22 a CC or MCC?
- No. M43.22 is neither a CC nor an MCC under MS-DRG v44.0.