M50.021 Cervical disc disorder at C4-C5 level with myelopathy

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applicable to

• C4-C5 disc disorder with myelopathy

Applies from M50 Cervical disc disorders

Includes

• cervicothoracic disc disorders with cervicalgia
• cervicothoracic disc disorders

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 722.71 Intervertebral disc disorder with myelopathy, cervical region (approximate)

Code annotations containing back-references to M50.021

Back-references to M50.0

• Type 1 Excludes: G99.2 Myelopathy in diseases classified elsewhere ("intervertebral disease (M50.0-, M51.0-)")

Back-references to M50

• Type 1 Excludes: G54 Nerve root and plexus disorders ("intervertebral disc disorders (M50-M51)")
• Type 2 Excludes: M51 Thoracic, thoracolumbar, and lumbosacral intervertebral disc disorders ("cervical and cervicothoracic disc disorders (M50.-)")
• Type 2 Excludes: M53.1 Cervicobrachial syndrome ("cervical disc disorder (M50.-)")
• Type 1 Excludes: M54.2 Cervicalgia ("cervicalgia due to intervertebral cervical disc disorder (M50.-)")
• Type 1 Excludes: S13.0 Traumatic rupture of cervical intervertebral disc ("rupture or displacement (nontraumatic) of cervical intervertebral disc NOS (M50.-)")

Diagnosis Index entries for M50.021

• Disorder (of) › disc (intervertebral) › cervical › with › myelopathy › C4-C5

Nearby codes

• M50.0 Cervical disc disorder with myelopathy
• M50.00 Cervical disc disorder with myelopathy, unspecified cervical region
• M50.01 Cervical disc disorder with myelopathy, high cervical region
• M50.02 Cervical disc disorder with myelopathy, mid-cervical region
• M50.020 Cervical disc disorder with myelopathy, mid-cervical region, unspecified level
• M50.021 Cervical disc disorder at C4-C5 level with myelopathy (this code)
• M50.022 Cervical disc disorder at C5-C6 level with myelopathy
• M50.023 Cervical disc disorder at C6-C7 level with myelopathy
• M50.03 Cervical disc disorder with myelopathy, cervicothoracic region
• M50.1 Cervical disc disorder with radiculopathy
• M50.10 Cervical disc disorder with radiculopathy, unspecified cervical region