G54.3 Thoracic root disorders, not elsewhere classified

Billable ICD-10-CM code, FY2026.

Applies from G54 Nerve root and plexus disorders

Excludes1 (never code together)

• current traumatic nerve root and plexus disorders - see nerve injury by body region
• intervertebral disc disorders (M50-M51)
• neuralgia or neuritis NOS (M79.2)
• neuritis or radiculitis brachial NOS (M54.13)
• neuritis or radiculitis lumbar NOS (M54.16)
• neuritis or radiculitis lumbosacral NOS (M54.17)
• neuritis or radiculitis thoracic NOS (M54.14)
• radiculitis NOS (M54.10)
• radiculopathy NOS (M54.10)
• spondylosis (M47.-)

MS-DRG index

Defines the logic of DRG(s) 073-074 in MDC 01.

Approximate ICD-9-CM (GEMs)

• 353.3 Thoracic root lesions, not elsewhere classified (approximate)

Diagnosis Index entries for G54.3

• Disorder (of) › nerve › root › thoracic
• Disorder (of) › thoracic root (nerve) NEC
• Lesion (s) (nontraumatic) › thoracic root (nerve) NEC

Nearby codes

• G54 Nerve root and plexus disorders
• G54.0 Brachial plexus disorders
• G54.1 Lumbosacral plexus disorders
• G54.2 Cervical root disorders, not elsewhere classified
• G54.3 Thoracic root disorders, not elsewhere classified (this code)
• G54.4 Lumbosacral root disorders, not elsewhere classified
• G54.5 Neuralgic amyotrophy
• G54.6 Phantom limb syndrome with pain
• G54.7 Phantom limb syndrome without pain
• G54.8 Other nerve root and plexus disorders