M46.46 Discitis, unspecified, lumbar region

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)

• 722.93 Other and unspecified disc disorder, lumbar region (approximate)

Code annotations containing back-references to M46.46

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 M46.46

• Discitis, diskitis › lumbar region

Nearby codes

• 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
• M46.46 Discitis, unspecified, lumbar region (this code)
• M46.47 Discitis, unspecified, lumbosacral region
• M46.48 Discitis, unspecified, sacral and sacrococcygeal region
• M46.49 Discitis, unspecified, multiple sites in spine
• M46.5 Other infective spondylopathies
• M46.50 Other infective spondylopathies, site unspecified