G99.2 Myelopathy in diseases classified elsewhere

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

Excludes1 (never code together)

• myelopathy in:
• intervertebral disease (M50.0-, M51.0-)
• spondylosis (M47.0-, M47.1-)

Code first

• underlying disease, such as:
• neoplasm (C00-D49)

Risk adjustment (HCC)

• CMS-HCC V28: HCC 182 — Spinal Cord Disorders/Injuries
• CMS-HCC V22: HCC 72 — Spinal Cord Disorders/Injuries
• RxHCC V08: HCC 155 — Spinal Cord Disorders
• ESRD V24: HCC 72

MS-DRG index

Defines the logic of DRG(s) 091-093 in MDC 01.

Approximate ICD-9-CM (GEMs)

• 336.3 Myelopathy in other diseases classified elsewhere (approximate)

Medicare Code Edits (MCE v43.1 (April 2026))

• Manifestation codes as principal diagnosis: Manifestation codes describe the manifestation of an underlying disease, not the disease itself, and are not allowed as principal diagnosis.

Diagnosis Index entries for G99.2

• Myelopathy (spinal cord) › in (due to) › disease classified elsewhere
• Myelopathy (spinal cord) › in (due to) › neoplastic disease
• Myelopathy (spinal cord) › in (due to) › pernicious anemia

Nearby codes

• G99 Other disorders of nervous system in diseases classified elsewhere
• G99.0 Autonomic neuropathy in diseases classified elsewhere
• G99.2 Myelopathy in diseases classified elsewhere (this code)
• G99.8 Other specified disorders of nervous system in diseases classified elsewhere