M46.40 Discitis, unspecified, site unspecified

Billable ICD-10-CM code, FY2026.

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 722.90 Other and unspecified disc disorder, unspecified region (approximate)

Code annotations containing back-references to M46.40

Back-references to M46

• Type 1 Excludes: G55 Nerve root and plexus compressions in diseases classified elsewhere ("nerve root compression (due to) (in) spondylopathies (M46.-, M48.-)")

Diagnosis Index entries for M46.40

• Discitis, diskitis

Nearby codes

• M46.36 Infection of intervertebral disc (pyogenic), lumbar region
• M46.37 Infection of intervertebral disc (pyogenic), lumbosacral region
• M46.38 Infection of intervertebral disc (pyogenic), sacral and sacrococcygeal region
• M46.39 Infection of intervertebral disc (pyogenic), multiple sites in spine
• M46.4 Discitis, unspecified
• M46.40 Discitis, unspecified, site unspecified (this code)
• M46.41 Discitis, unspecified, occipito-atlanto-axial region
• M46.42 Discitis, unspecified, cervical region
• M46.43 Discitis, unspecified, cervicothoracic region
• M46.44 Discitis, unspecified, thoracic region
• M46.45 Discitis, unspecified, thoracolumbar region