G99.2

HCC Category Mapping

What This Code Means

This code describes damage or disease of the spinal cord that is caused by another medical condition listed elsewhere in the medical record. The spinal cord damage results from an underlying disease rather than being a primary spinal cord disorder.

Coding Tips

• •This is a secondary diagnosis code that requires an underlying condition code to be reported first; always identify and code the primary disease causing the myelopathy
• •Common underlying conditions include syphilis (A52.14), HIV (B20), vitamin B12 deficiency (E53.8), and other systemic diseases; ensure the causal relationship is documented in the medical record

Clinical Significance

Myelopathy in diseases classified elsewhere is a manifestation code used when spinal cord dysfunction occurs as a result of an underlying classified condition, such as cervical spondylosis, systemic lupus erythematosus, or vitamin B12 deficiency. Proper use requires coding the underlying condition first, followed by G99.2. This dual-coding approach accurately represents the complexity of the patient's condition and its impact on the spinal cord.

Documentation Requirements

• ✓Documentation of the underlying disease causing the myelopathy
• ✓Clinical evidence of spinal cord dysfunction (myelopathic signs on examination)
• ✓Causal relationship between the underlying disease and the myelopathy documented by the provider
• ✓Imaging or other diagnostic evidence supporting spinal cord involvement
• ✓Current functional status and treatment plan for both the underlying disease and the myelopathy

Commonly Confused Codes