M47.891 Other spondylosis, occipito-atlanto-axial region

Billable ICD-10-CM code, FY2026.

Applies from M47 Spondylosis

Includes

• arthrosis or osteoarthritis of spine
• degeneration of facet joints

MS-DRG index

Defines the logic of DRG(s) 551-552 in MDC 08.

Approximate ICD-9-CM (GEMs)

• 721.0 Cervical spondylosis without myelopathy (approximate)

Code annotations containing back-references to M47.891

Back-references to M47

• Type 1 Excludes: G54 Nerve root and plexus disorders ("spondylosis (M47.-)")
• Type 2 Excludes: M19 Other and unspecified osteoarthritis ("arthrosis of spine (M47.-)")
• Type 2 Excludes: M19 Other and unspecified osteoarthritis ("osteoarthritis of spine (M47.-)")

Diagnosis Index entries for M47.891

• Spondylosis › specified NEC › occipito-atlanto-axial region

Nearby codes

• M47.816 Spondylosis without myelopathy or radiculopathy, lumbar region
• M47.817 Spondylosis without myelopathy or radiculopathy, lumbosacral region
• M47.818 Spondylosis without myelopathy or radiculopathy, sacral and sacrococcygeal region
• M47.819 Spondylosis without myelopathy or radiculopathy, site unspecified
• M47.89 Other spondylosis
• M47.891 Other spondylosis, occipito-atlanto-axial region (this code)
• M47.892 Other spondylosis, cervical region
• M47.893 Other spondylosis, cervicothoracic region
• M47.894 Other spondylosis, thoracic region
• M47.895 Other spondylosis, thoracolumbar region
• M47.896 Other spondylosis, lumbar region